coobird / thumbnailator Goto Github PK

What steps will reproduce the problem?
1. Unzip the attached maven project
2. cd thumbnailator-test
3. mvn test 

Maven runs the test with -Xms256m -Xmx256m. It resizes a png file 100 times, 
then resizes a jpg around 40 times before throwing an OOME. You can also build 
and run an executable jar with 
mvn -DskipTests=true package
java -Xms256m -Xmx256m -jar target/jpegleaker.jar

This fails on Ubuntu, java-version
java version "1.7.0_21"
Java(TM) SE Runtime Environment (build 1.7.0_21-b11)
Java HotSpot(TM) 64-Bit Server VM (build 23.21-b01, mixed mode)

This works on Ubuntu java -version
java version "1.7.0_17"
Java(TM) SE Runtime Environment (build 1.7.0_17-b02)
Java HotSpot(TM) 64-Bit Server VM (build 23.7-b01, mixed mode)

What steps will reproduce the problem?
1. original.png is a 128x128 8-bit paletted PNG.
2.
Builder<? extends InputStream> thumbnailBuilder = Thumbnails.of(new 
FileInputStream("original.png");
thumbnailBuilder.size(80, 80);
thumbnailBuilder.toOutputStream(new FileOutputStream("resized in 
thumbnailator.png"));


What is the expected output? What do you see instead?

I expect a decent resize result, like 'resized in editor.png' (I used Corel 
Photo Paint 12, which retained the 8-bit color depth in the result). Instead I 
see an image with poor color interpolation. Setting the alpaInterpolation, 
antialiasing, dithering, rendering, resizer and scalingMode to the quality 
modes or any of the interpolation algorithms didn't produce a result like the 
one using my editor. 


What version of the product are you using?
0.3.10

On what operating system?
Ubuntu 10

Which version of Java?
JDK 6

Thumbnails.of(new File("path/to/directory").listFiles())
        .size(640, 480)
        .outputFormat("jpg")
        .toFiles(Rename.PREFIX_DOT_THUMBNAIL);

What is the expected output? What do you see instead?
It should generate thumbnails but is giving "java.lang.OutOfMemoryError: Java 
heap space"

What version of the product are you using? On what operating system? Which
version of Java (Sun/Oracle? OpenJDK?) ?
thumbnailator : 0.4.3

I'm using something like the following piece of code:

<code>File source = new File("C;\test.png");
File dest = new File("C:\test_thumb.png");
BufferedImage buffered = ImageIO.read(source);
Thumbnails.of(source).forceSize(150, 150).toFile(dest);</code>

This is being run as part of an app running on Tomcat.  The thumbnail is 
created successfully but it appears to be locked in some way.  Although Windows 
will show me a thumbnail of the image, when I try to open the file in a variety 
of programs then the image is unreadable.  If I stop Tomcat, then the file 
becomes readable.

It appears that something is keeping some form of lock open on the file.  If I 
get a chance, I'll dive into the code and see if I can spot what.

This is on Windows, Java 1.6 & using Thumbnailator 0.3.7 (latest at the time of 
writing).

What steps will reproduce the problem?
1. Use Thumbnailator with a TIFF image.

What is the expected output? What do you see instead?

javax.imageio.IIOException: I/O error writing TIFF file!
    at com.sun.media.imageioimpl.plugins.tiff.TIFFImageWriter.write(TIFFImageWriter.java:2669)
    at com.sun.media.imageioimpl.plugins.tiff.TIFFImageWriter.write(TIFFImageWriter.java:2380)
    at net.coobird.thumbnailator.tasks.io.OutputStreamImageSink.write(Unknown Source)
    at net.coobird.thumbnailator.tasks.SourceSinkThumbnailTask.write(Unknown Source)
...
Caused by: javax.imageio.IIOException: Bits per sample must be 1 for RLE 
compression!
    at com.sun.media.imageioimpl.plugins.tiff.TIFFRLECompressor.encode(TIFFRLECompressor.java:116)
...

What version of the product are you using? On what operating system? Which
version of Java (Sun/Oracle? OpenJDK?) ?

v0.4.5 on Java 1.7.0_10 with 
jai-imageio-core-standalone-1.2-pre-dr-b04-2013-04-23.

What steps will reproduce the problem?
1.Thumbnails.of(OrgFile).size(160, 
128).outputFormat("gif").toFile(E:\\abc\temp);
2.
3.

What is the expected output? What do you see instead?
Specified format is not supported: gif

What version of the product are you using? On what operating system? Which
version of Java?
windows XP, JAVA 1.5

Please provide any additional information below.

What steps will reproduce the problem?
1.Gave a tif image as input for thumbnail generation
2.
3.

What is the expected output? What do you see instead?
UnsupportedFormatException

What version of the product are you using? 0.4.1 

On what operating system? Ubuntu 

Which version of Java? 6

Would like to know which formats are supported for thumbnail generation.

Per request from a user, add a new `scale` method overload to specify the 
scaling factor of the width and height independently, i.e.

  Thumbnails.of("path/to/image")
    .scale(0.6, 0.4)
    .toFile("path/to/thumbnail");

In the above code, the width will be scaled by 0.6 times, and height will be 
scaled by 0.4 times.

For example, a source image with dimensions 100 x 100 will result in a 
thumbnail that is 60 x 40. (The resulting image will not maintain the aspect 
ratio of the original.)


Background
---------------

Currently, rescaling an image by a scaling factor will maintain the aspect 
ratio of the width and height.

  Thumbnails.of("path/to/image")
    .scale(0.5)
    .toFile("path/to/thumbnail");

In the above code, if the source image is 100 x 100, the resulting image will 
be 50 x 50.

If one wants to rescale the width to 0.5 and height to 0.6, there is no simple 
one-liner that can be performed with Thumbnailator -- one would have to 
calculate the thumbnail size for each source image, and use one of the `size` 
methods to specify the final image size.


API Design Consideration
-------------------------

This new `scale` method will not maintain the aspect ratio of the original 
image unless the scaling factor for the width and height are equal. Therefore, 
unless the two factors are equal, calling the `keepAspectRatio` method should 
result in an `IllegalStateException`.

when i resize a animated gif like this
Thumbnails.of(new File("E:\\images\\test.gif")).size(width, height)
    .useOriginalFormat().toOutputStream(resp.getOutputStream());

the resized image lost color . see the attachement for details.

I'm using jdk1.6

I used caption for adding some text to the image which resulted in distortion 
in image as well as added text seems to have some additional pixels around it. 
It can be seen in the attachment here.

What steps will reproduce the problem?
1. Start Tomcat and Read source file at %tomcat%/bin/test_image.jpg
2. Read source image and Create resized image by 
Thumbnails.of("test_image.jpg").size(width, height).toFile("test_target.jpg");
3. Console print out following error message and target image created 0 byte.

What is the expected output? What do you see instead?
2012-05-22 10:21:36,328 ERROR [http-8080-3] taglibs.ImageTag  
(ImageTag.java:223)     - java.io.IOException: Could not open output file.
java.io.IOException: Could not open output file.
    at net.coobird.thumbnailator.tasks.io.FileImageSink.write(Unknown Source)
    at net.coobird.thumbnailator.tasks.SourceSinkThumbnailTask.write(Unknown Source)
    at net.coobird.thumbnailator.Thumbnailator.createThumbnail(Unknown Source)
    at net.coobird.thumbnailator.Thumbnails$Builder.toFile(Unknown Source)


What version of the product are you using? On what operating system? Which
version of Java (Sun/Oracle? OpenJDK?) ?
Thumbnailator 0.4.2
Windows XP
JDK 1.6 (Oracle)


Please provide any additional information below.

I tested this code with junit test module. But result of test was success. See 
following code 

BufferedImage image = Thumbnails.of(srcFile).size(width, 
height).asBufferedImage();
ImageIO.write(image, FilenameUtils.getExtension(targetPath), targetFile);

This code run on tomcat was success.  


I suggest that the message you rewrited in FileImageSink.write() will be change 
by original message. 

What steps will reproduce the problem?
1.
2.
3.

What is the expected output? What do you see instead?


What version of the product are you using? On what operating system? Which
version of Java (Sun/Oracle? OpenJDK?) ?


Please provide any additional information below.
The jrawio project provides the ability to read many more image types.

Problem
-------
* Currently, Thumbnailator does not have facilities to provide feedback as to 
the progress of a thumbnail generation task.

This means that if a task takes a long time, there is no way for the 
application using Thumbnailator to give feedback as to the progress of making 
thumbnails.

Also, not providing adequate feedback means that applications using the library 
may not be able to perform adequate logging, which may result in difficulty 
during development and debugging.


Solution
--------
* Provide an event notification facility, similar to the `EventListener`s which 
can be found in the Java APIs.


Complications
-------------
* Many classes would have to be retrofitted to support the event notification 
mechanism.

Would it be possible to add an option to performs the a resize command only if 
the original file is larger than the dimensions specified. i.e. similar to the 
ImageMagick / GraphicsMagick angle bracket use, e.g.

-size '200x200>'

I found a problem with resizing gif files when I set output quality. I think it 
is possible to reproduce it with any gif file.

What steps will reproduce the problem?

Sample code:
Working:
BufferedImage bi = ImageIO.read(sourceFile);
        Thumbnails.of(bi).size(90, 63).keepAspectRatio(false).toFile(destFile);

Throwing exception version:
BufferedImage bi = ImageIO.read(sourceFile);
        Thumbnails.of(bi).size(90, 63).keepAspectRatio(false).outputQuality(0.8f).toFile(destFile);


What is the expected output? What do you see instead?
Stacktrace:
Exception in thread "main" java.lang.IllegalStateException: No compression type 
set!
    at javax.imageio.ImageWriteParam.setCompressionQuality(ImageWriteParam.java:1241)
    at net.coobird.thumbnailator.tasks.io.FileImageSink.write(Unknown Source)
    at net.coobird.thumbnailator.tasks.SourceSinkThumbnailTask.write(Unknown Source)
    at net.coobird.thumbnailator.Thumbnailator.createThumbnail(Unknown Source)
    at net.coobird.thumbnailator.Thumbnails$Builder.toFile(Unknown Source)
    at ImageResize.resizeImage(ImageResize.java:26)
    at ImageResize.main(ImageResize.java:18)

What version of the product are you using? On what operating system?
0.3.2

Thumbnailator should be available from the Maven Central Repository.

There appears to be projects using Thumbnailator which are using Maven for 
their build management.

Therefore, it would be beneficial to users of Thumbnailator using Maven, if 
adding a dependency didn't require adding the library in a local or internal 
repository.

Information on adding to the Central Repo can be found here:
http://maven.apache.org/repository/index.html

I try to use the Thumbnailator.jar file and i receive this exception:
Thumbnails.of(...) i receive this error: The type java.awt.image.BufferedImage

What i try to do?

Is to take a picture with my android camera and to put a logo image on bottom 
left corner inside the image and show it. that's it.

Issue
----------
When resizing an image with a scaling factor greater than 0.5, the details of 
the resulting image is not smooth.

Attached are images resized with The GIMP and Thumbnailator.
The image resized with The GIMP has smooth lines, but the image resized by 
Thumbnailator shows lines which are not straight.

Example
----------
  Thumbnails.of("path/to/image")
    .scale(0.66)
    .toFile("path/to/thumbnail");

In one use case, multiple thumbnails of various sizes are made from a single 
original.

Currently, the static interface will presumably (?) need to read the source 
file, which may be many MB, once for each thumbnail it generates.

Allow chaining of multiple .size / .toFile commands in such a way that the 
performance is optimized; as much as possible of the setup and file reading 
logic should be reused.


What is the expected output? What do you see instead?
Same as today, but faster.

What version of the product are you using? On what operating system? Which
version of Java?
I'm using 0.4.0 on Win x64 with JDK 1.7_03, it's working great!

Please provide any additional information below.

Sometimes people want images to be thumbnailed within a range. Maybe it's 
better to offer a way to thumbnail a picture by its x&y coordinates.
If clip is being implemented by you, then I just need sit down and wait. If 
not, maybe I will implement it by myself and post it later.

I need to create thumbnails similar to the Facebook ones. What Facebook do is 
maintain the aspect ratio, but forcing a defined size of thumbnail.

It resizes the image to the defined size and then cuts what is left, forcing 
the height or the width (and avoiding blank spaces around the image). For me is 
the best approach when we talk about thumbnails.

I tried to use something like this:

Thumbnails.of(myInputStream).forceSize(width, 
height).keepAspectRatio(true).outputFormat("jpg").outputQuality(1.0f).toOutputSt
ream(myOutputStream);

But it does not work. I think this approach is not possible yet with 
thumbnailator so can you implement it? Just a suggestion to make this library 
even better (it is definately the best and simplest all over the web).

Thanks in advance.

Have the following code wrapped in a web service:

Thumbnails.of("C:\\images\\PSC001.JPG")
          .size(160, 160)
          .toFile("C:\\images\\thumbs\\PSC001.JPG");


However, the output (for jpg and jpeg extensions only) is 

C:\images\thumbs\PSC001.JPG.JPEG

if I do .outputFormat("jpg") I get

C:\images\thumbs\PSC001.JPG.jpg

For some reason it always tags on an extra extension.  Don't know if this is 
supposed to happen but could you let me know?

Thumbnailator-0.3.8.jar
jdk1.6.0_20 
NetBeans IDE 7.0 (Build 201104080000)

Thanks
Chris

Great product, thanks

Problem
----------
An user reported an issue via e-mail that using the `rotate` method causes 
color distortions in the resulting thumbnail.

When not using the `rotate` method, the thumbnail does not exhibit color 
distortion.

Note
----------
The issue seems to occur when a certain type of JPEG image is being rotated. 
Therefore, the problem may lie with the `Rotation` class. (And possibly other 
`ImageFilter` classes as well.)

my english is much poor,sorry -_-

but I really need your help

my runtime environments：
windows 7
JDK 1.6
thumbnailator 0.32


my code:

Thumbnails.of(temp)
.size(maxW, 3000)
.outputQuality(0.8)
.rendering(Rendering.SPEED)
.outputFormat("jpg")
.toFile(new File(f,img.getName().toLowerCase()));

I tried various options, but still did not get the expected results.
so I can only ask for your help.
this is a video shot,attached is the original image and thumbnails.

thumbnailator is a great open source software, thanks.

Problem
-------
* There are many classes in the net.coobird.thumbnailator package which would 
be more appropriate if they were placed in their own packages. Currently, there 
are classes with different responsibilities in the same package.


Proposal
--------
* Move the following classes to the following packages:

net.coobird.thumbnailator.util?
 * BufferedImages

net.coobird.thumbnailator.geometry
 * Coordinate
 * Position
 * Positions

net.coobird.thumbnailator.rename?
 * Rename


Complications
-------------
* This will lead to changes to the API which will not be backward compatible.

Problem
-------
* Currently, Thumbnailator does not have good support for large image files.

For example, there is no protection against running out of memory, and this 
behavior is completely dependent upon the JVM's memory settings.


Solution
--------
* Support tiled reading of image files, rather than reading the entire files at 
once, as is implemented currently.


Complications
-------------
* Changes to support reading images by tiles will most likely lead to changes 
to the API.

when i resize a animated gif like this
Thumbnails.of(new File("E:\\images\\test.gif")).size(width, height)
    .useOriginalFormat().toOutputStream(resp.getOutputStream());

the resized image lost color . see the attachement for details.

I'm using jdk1.6

What steps will reproduce the problem?
1.  Repeatedly generate thumbnails using code like: 
Thumbnails.of(file).size(getWidth(),getHeight()).asBufferedImage();

What is the expected output? What do you see instead?
If you watch the heap it grows very quickly, by several to tens of megabytes 
each time a thumbnail is generated.

What version of the product are you using? On what operating system? Which
version of Java (Sun/Oracle? OpenJDK?) ?
Netbeans 7.3 on OS X.

Please provide any additional information below.
Here is a simple program (testimage.jpg is a 2 MB image)
public static void main(String[] args) {
        File theFile = new File("testimage.jpg");
        BufferedImage currentThumbnail = null;

        for (int i = 0; i < 25; i++) {
            System.out.println(i+"\tCurrent Heap Size in MB: " + (Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()) / (1024 * 1024));
            try {
                currentThumbnail = Thumbnails.of(theFile).size(200, 200).asBufferedImage();
//                currentThumbnail = 
Thumbnailator.createThumbnail(theFile,200,200);
            } catch (Exception e) {
                System.out.println("Could not create thumbnail: " + e.toString());
            }
        }
    }

Below I show the output of the two calls to the library.  Thumbnails.of() 
continues to grow the heap and I run out of 512 MB heap after about 20 
iterations.  Thumbnailator.createThumbnail heap grows to about 125 MB max and 
then sits stable there. I feel like that's a pretty huge heap as well, but at 
least it settles down.

The Internet seems to suggest (various stackoverflow posts I have read) that 
the bufferedimages are probably being kept in a collection somewhere in the 
latter case and the references are never cleared so the images don't get 
garbage collected.  Since the Thumbnails.of approach is the one that handles 
EXIF rotation (my whole reason for using the library), this is dealbreaker for 
me right now. Thought you should know.

 Thumbnails.of output
-----------------------------------
0   Current Heap Size in MB: 1
1   Current Heap Size in MB: 55
2   Current Heap Size in MB: 76
3   Current Heap Size in MB: 122
4   Current Heap Size in MB: 152
5   Current Heap Size in MB: 142
6   Current Heap Size in MB: 194
7   Current Heap Size in MB: 230
8   Current Heap Size in MB: 240
9   Current Heap Size in MB: 240
10  Current Heap Size in MB: 286
11  Current Heap Size in MB: 286
12  Current Heap Size in MB: 332
13  Current Heap Size in MB: 378
14  Current Heap Size in MB: 355
15  Current Heap Size in MB: 400
16  Current Heap Size in MB: 400
17  Current Heap Size in MB: 423
18  Current Heap Size in MB: 446
19  Current Heap Size in MB: 458
20  Current Heap Size in MB: 481
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
    at java.awt.image.DataBufferByte.<init>(DataBufferByte.java:59)
    at java.awt.image.ComponentSampleModel.createDataBuffer(ComponentSampleModel.java:397)
    at java.awt.image.Raster.createWritableRaster(Raster.java:938)
    at javax.imageio.ImageTypeSpecifier.createBufferedImage(ImageTypeSpecifier.java:1056)
    at javax.imageio.ImageReader.getDestination(ImageReader.java:2879)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.readInternal(JPEGImageReader.java:1046)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.read(JPEGImageReader.java:1014)
    at javax.imageio.ImageReader.read(ImageReader.java:923)
    at net.coobird.thumbnailator.tasks.io.FileImageSource.read(Unknown Source)
    at net.coobird.thumbnailator.tasks.SourceSinkThumbnailTask.read(Unknown Source)
    at net.coobird.thumbnailator.Thumbnailator.createThumbnail(Unknown Source)
    at net.coobird.thumbnailator.Thumbnails$Builder.asBufferedImage(Unknown Source)
    at thumbtest.ThumbTest.main(ThumbTest.java:29)

Thumbnailator.createThumbnail  output
-----------------------------------
0   Current Heap Size in MB: 1
1   Current Heap Size in MB: 63
2   Current Heap Size in MB: 61
3   Current Heap Size in MB: 121
4   Current Heap Size in MB: 136
5   Current Heap Size in MB: 120
6   Current Heap Size in MB: 133
7   Current Heap Size in MB: 117
8   Current Heap Size in MB: 124
9   Current Heap Size in MB: 113
10  Current Heap Size in MB: 120
11  Current Heap Size in MB: 110
12  Current Heap Size in MB: 117
13  Current Heap Size in MB: 124
14  Current Heap Size in MB: 113
15  Current Heap Size in MB: 120
16  Current Heap Size in MB: 110
17  Current Heap Size in MB: 116
18  Current Heap Size in MB: 123
19  Current Heap Size in MB: 113
20  Current Heap Size in MB: 120
21  Current Heap Size in MB: 110
22  Current Heap Size in MB: 116
23  Current Heap Size in MB: 123
24  Current Heap Size in MB: 113

I have the next code line..


BufferedImage thumbnail = Thumbnails.of(input)
                        .size(200, 200)
                        .rotate(90)
                        .asBufferedImage();

were input is a BufferedImage object but i have an error that say me....

the method of(String[]) that exist into the Thumnails is not aplicable to args 
BufferedImage.

Sorry but i don´t speak english languaje, but i understand more or less 
jejeje. 

It would be very useful to add feature to obtain image parameters (width, 
height, etc).

Currently it's possible to get from buffered image object: 
Thumbnails.of(...).scale(1f).asBufferedImage()

Without .scale(1f) it fails with exception though it's unnecessary operation 
for the case.

What steps will reproduce the problem?
1. Take an image with EXIF rotation and use the convenience method to create a 
thumbnail

What is the expected output? What do you see instead?
Since the latest version EXIF rotation information is supposed to be respected. 
This is true if you use: 
Thumbnails.of(file).size(width,height).asBufferedImage();

I would expect the same behaviour for :
Thumbnailator.createThumbnail(file, (width,height)

However, the former rotates according the EXIF and the latter does not.  
Perhaps I'm mistaken, but this seems unexpected.


What version of the product are you using? On what operating system? Which
version of Java (Sun/Oracle? OpenJDK?) ?
This is in NetBeans 7.3 (whatever JDK that uses) on OS X 10.8.3.  Your library 
seems to work on OS X btw otherwise, although I have only used a little itty 
bitty piece of it.


Please provide any additional information below.
This is not a showstopper I just thought I'd let you know.  Thanks for this 
fantastic library.  I had written my own little chunk of code and it was messy 
and hacky.  Now it's clean, and it respects the EXIF data.

Problem
-------
* Currently, Thumbnailator does not recognize information in JPEG EXIFs, which 
can lead to photographs taken in portrait mode to be resized in landscape mode.


Solution
--------
* Read the EXIF metadata present in JPEG files
* If the EXIF metadata indicates that the image is in portrait mode, then 
perform a rotation ahead of the thumbnail generation.


Complications
-------------
* The behavior for handling portrait-oriented JPEGs in Thumbnailator will 
change after the introduction of this feature.

What steps will reproduce the problem?
1.Thumbnails.of(new 
File("/Users/wq/Downloads/covecfe6c5888b1e.JPG")).size(100,100).toFile(new 
File("/Users/wq/Downloads/abc.jpg"));
2.
3.

What is the expected output? What do you see instead?


What version of the product are you using? On what operating system? Which
version of Java (Sun/Oracle? OpenJDK?) ?
MacOSX,oracle-jdk7.


Please provide any additional information below.
javax.imageio.IIOException: Improper call to JPEG library in state 202
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.readImageHeader(Native Method)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.readNativeHeader(JPEGImageReader.java:550)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.checkTablesOnly(JPEGImageReader.java:295)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.gotoImage(JPEGImageReader.java:427)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.readHeader(JPEGImageReader.java:543)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.readInternal(JPEGImageReader.java:986)
    at com.sun.imageio.plugins.jpeg.JPEGImageReader.read(JPEGImageReader.java:966)
    at javax.imageio.ImageReader.read(ImageReader.java:940)
    at net.coobird.thumbnailator.tasks.io.FileImageSource.read(Unknown Source)
    at net.coobird.thumbnailator.tasks.SourceSinkThumbnailTask.read(Unknown Source)
    at net.coobird.thumbnailator.Thumbnailator.createThumbnail(Unknown Source)
    at net.coobird.thumbnailator.Thumbnails$Builder.toFile(Unknown Source)

I cannot use this lib which looks very good because of a missing functionnality 
: Resizing strategy.

I mean, that there is different way to generate a thumbnail, if I ask a 
thumbnail of 100x100
I'd like to choose if 
1. I will keep the ratio by fitting to the biggest dimension (but i will not 
have 100x100 result)
2. I will crop the image 
3. I will add empty area around to have exactly 100x100
4. I will not keep the ratio

As I have seen I can do 1. and 4. but I didn't see how to do 2. and/or 3.
If it exists, forgive me and please consider this as a documentation issue.

I'm sure I will use your lib later but without this functionnality I cannot in 
my current project and I'm going to code again some ugly code for resizing 
images

Problem
---------------
Thumbnailator does not currently have a simple way to support differing inputs 
and outputs, i.e. thumbnails created from image files can only be output to 
files.


Solution
---------------
The `ThumbnailTask` class is designed to accept an input and output and perform 
processing to create thumbnails.

By creating a new `ThumbnailTask` along with input and output interfaces which 
can plug into that new `ThumbnailTask`, it would be possible to support 
differing input and output formats.

This approach has an additional benefit that the existing code for processing 
thumbnails (such as the `Thumbnailator.createThumbnail(ThumbnailTask)` method) 
can be used as is.


Complications
---------------
No major complications can be found.

I need convert img from CMYK to RGB?

How to convert from CMYK to RGB?

Please...:)

I want to resize a png file in following code:
  Thumbnails.of(srcImg).size(width, height).toFile(optImg)

But all transparent background turns to black.
See the attach
What should I do?

thumbnailator-0.4.0 in sun/oracle jdk1.7

Thank you very much!

What steps will reproduce the problem?
1.Use thumbnailator process the following file,scale the size ,and save it. 
you'll find that the color lost or the color is not correct.

I find a reason is that the jpg file header is unnormal. and not start with 
JFIF chars.(you can see when you open it with HEX editor).
so I wish thumbnailator can process the unnormal jpg file correctly.tks.

Env:

jdk 1.6,cent os or win7, thumbnailator 0.4.5 ,Tomcat 6

What steps will reproduce the problem?
1. Run the test file. I got an ok from the first test method and 
OutOfMemoryError from the second method.
2.
3.

What is the expected output? What do you see instead?
Both ok.

What version of the product are you using? On what operating system? Which
version of Java (Sun/Oracle? OpenJDK?) ?
Window jdk 1.6.45

Please provide any additional information below.

To support all methods of EXIF rotation, there should be a support of image 
flipping. Please add methods Builder.flipX() and Builder.flipY(). This is also 
a prerequisite of Issue 13.

Thanks in advance.

The size of original image is 11MB, and its resolution is 3312*4416，i use the 
following code to compress original image：
Thumbnails.of(originalImage).size(600, 800).toFile(originalImage);
The size of  compressed image is also 11MB, and its resolution is 600*800. But 
if i change parameters:
Thumbnails.of(originalImage).size(90, 120).toFile(originalImage);
The size of compressed image is 2KB.
How to solve this problem? Sorry for my poor English.

Hi,

It would be nice if you would made your releases accessible as a maven 
repository.

Some interesting links about how to do it:
1) 
http://www.thewebsemantic.com/2009/04/11/your-very-own-google-code-maven-repo/
2) 
http://stackoverflow.com/questions/1280470/maven-repository-for-google-code-proj
ect

Problem
-------
* When using the content assist (pressing Ctrl-Space in Windows) with the 
`Thumbnails` builder interface, the method argument names appear as `arg0`, ... 
, `argn` rather than the actual argument name.

* The issue is with a bug in Eclipse which cannot provide content assist for 
inner classes correctly.
 * https://bugs.eclipse.org/bugs/show_bug.cgi?id=151500
 * The issue is to be fixed in Eclipse 3.7, according to the above ticket.


Solution
--------
* Move the `Thumbnails.Builder` inner class to a top-level class.
 * Although the bug is to be fixed in the next release of Eclipse, one cannot reasonably expect that all users will transition to the new version.
 * Solving this problem is in the interest of Thumbnailator users, as it decreases the user-friendliness of the library.


Complications
-------------
* It has the potential to break non-standard usage of the API, such as code 
which is assigning the `Thumbnalis.Builder` object to a variable:

  // The following code will break:
  Thumbnails.Builder builder = Thumbnails.of(...);

The plugin seems to require both width and height values to be entered, which 
rules out the ability to scale an image according to either its width/height 
proportionately.

Is there a way to achieve this please? 

What steps will reproduce the problem?
1. Generate a CMYK JPG, call it selectedFile
1. Run Thumbnails.of(selectedFile).size(500, 500).toFile(thumb500File);

What is the expected output? What do you see instead?

Expected output - thumb500File created normally

Actual output: Exception raised "Incompatible color conversion"

What version of the product are you using? On what operating system? Which
version of Java (Sun/Oracle? OpenJDK?) ?

OpenJDK 7u9, Ubuntu Linux

Please provide any additional information below.

The core Java method ImageIO.read produces exactly the same exception, e.g.

BufferedImage originalImage = ImageIO.read(selectedFile);

so it looks like the issue is with Java, however other people have found 
workarounds - 
http://www.randelshofer.ch/blog/2011/08/reading-cmyk-jpeg-images-with-java-image
io/

Would it be possible to implement a workaround in Thumbnailator too? I think 
the Java issue dates back some time.

A sample JPG exhibiting the problem is attached.

What steps will reproduce the problem?
1. Using ".asFiles(Rename.SUFFIX_DOT_THUMBNAIL)"
2. On files which has a "." in the file name.
3. Example: "orig.image.jpg"
4. Will produce: "orig.thumbnail.image.jpg"
5. Instead of the desired output: "orig.image.thumbnail.jpg"

What is the expected output? What do you see instead?
See above.

What version of the product are you using? On what operating system? Which
version of Java (Sun/Oracle? OpenJDK?) ?
Java 7 (1.7.0_04)
Thumbnailator 0.41
Amazon Linux AMI 2012.03

Please provide any additional information below.

What steps will reproduce the problem?
1. Scale the attached image and convert to jpeg.
2.
3.

What is the expected output? What do you see instead?
The scaled image is expected in jpeg format.
Getting a scaled jpeg image with negative image color.


What version of the product are you using? On what operating system? Which
version of Java?
Thumbnailator 3.9
Java 1.6.21
Windows 7



Please provide any additional information below.

What steps will reproduce the problem?
1.
2.
3.

What is the expected output? What do you see instead?


What version of the product are you using? On what operating system? Which
version of Java (Sun/Oracle? OpenJDK?) ? Java 7


Please provide any additional information below.
Java 7 introduced Path. Perhaps you can use Path instead of File.

What steps will reproduce the problem?
1. Add jar to project (eclipse)
2. Run code:

Thumbnails.of(file.getInputStream())
                    .scale(100, 100)
                    .outputFormat(newFile.getExtension())
                    .toFile(newFile.getAbsolutePath());

I want to recieve the scaled thumbnail image, but this piece of code does 
nothing without throwing any exception. What is interesting that if I change it 
to size (with same parameters):
Thumbnails.of(file.getInputStream())
                    .size(100, 100)
                    .outputFormat(newFile.getExtension())
                    .toFile(newFile.getAbsolutePath());


I am using 0.4.2 version on Win7x64, JDK version 6.

Please add Builder.drawTo(Grapgics2D g, ...) to write the thumbnail to existing 
graphics directly.