Comments (10)
that feature is experimental, so can we rely on it?
Experimental insofar as there are probably still some untested code paths, with the aim to add more test cases as bugs are found and fixed. I don't expect to remove this feature.
from sharp.
Aside: I've removed the "experimental" status of pipelineColourspace
via commit f67228e
from sharp.
Hi, you can use pipelineColourspace to force the processing colourspace (and therefore force a bitdepth).
For example, if you want floating-point RGB, try scrgb
:
sharp("path to image")
.pipelineColourspace('scrgb')
.resize(20, 20)
...
from sharp.
That seemed to do the trick. Thanks a lot!
One thing though. According to the documentation that feature is experimental, so can we rely on it?
from sharp.
Hi again, and an update on this:
We have now run a lot of tests using the pipelineColourspace('scrgb')
setting, and although the originally reported rounding artefacts are gone, we have noticed that the resulting images look sharpened in a way that is not to our liking. Especially in transitional areas between bright and dark, the edges get unrealistically sharpened. Therefore I ask again, would it be possible to add a flag to opt out of using the integer premultiply when resizing (the 0.31.3 behaviour)?
from sharp.
we have noticed that the resulting images look sharpened in a way that is not to our liking
Please can you provide sample images and minimal code that allows someone else to reproduce. Please also include more information about expected vs actual output.
from sharp.
Here are a few samples using sharp 0.33.3 with and without pipelineColourspace
. We expected the outputs to be very similar, but as can be seen there are major differences in the actual results.
Resize sample 1:
Result using sharp("path to image").resize(240, 240)
Result using sharp("path to image").pipelineColourspace('scrgb').resize(240, 240)
Resize sample 2:
Result using sharp("path to image").resize(240, 240)
Result using sharp("path to image").pipelineColourspace('scrgb').resize(240, 240)
from sharp.
Thanks for the examples, my best guess would be that the use of wide-gamut, linear scRGB is producing more accurate luminance levels in the output compared with non-linear sRGB.
If you would prefer less accurate luminance, perhaps try experimenting with gamma
levels e.g. in=2.2, out=1.0.
from sharp.
@dannerei Were you able to make any progress with this?
from sharp.
Unfortunately we were not able to reach satisfactory results in a consistent way using the proposed solution, so for now we're stuck with ImageMagick. I still hope that we can make the transition to sharp sometime in the future though, since it offers superior performance and a very pleasant API to work with.
from sharp.
Related Issues (20)
- Webpack node-loader support + cross-compilation HOT 4
- Handling HEIC files in an Electron application and distributing HOT 2
- Unexpected rotation behavior for different size outputs after upgrading Sharp HOT 1
- Feature Request: Please support running in a browser (without node.js) HOT 2
- electon,win32,ia32,install ok,but pack and run ,it's error,"The specified procedure could not be found." HOT 3
- how to cache sharp binaries? HOT 1
- Sharp HEIC export is 4.4x bigger than equivalent macOS Finder export HOT 5
- Vercel production issue: .jpeg({ quality: XX }) not working at all - works in local env HOT 9
- PNG Conversion Failure HOT 2
- Resizing results in low quality/blurry image HOT 6
- Resize images while keeping the ICC profile and color space HOT 4
- Installation fails when trying to install as a dependency with global libvips on macOS HOT 4
- sharp 在获取某些webp图片元数据时导致文件句柄未被正确释放 HOT 2
- Sharp is present in node_modules but still got error in server logs. Error: 'sharp' is required to be installed in standalone mode. HOT 8
- Bug: type metadata.chromaSubsampling as union with undefined HOT 1
- Channel excluded from image manipulations, if the channel was `join`ed at later time HOT 4
- In network contrained environement we shoud have a diferent url for github like an artifactory proxy HOT 1
- Divide Blend HOT 2
- Help converting raw input with color-profile to srgb HOT 2
- How do make solid border around image instead of a blur? HOT 2
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from sharp.