ConvertBufferedImage.convertTo creates wrong output about boofcv

[lessthanoptimal]

Could you provide an example image? Similar bugs have popped up in the past because there are so many possible formats inside of BufferedImages.

[thhart]

Please see files attached. Used jpg here because of sizes. This is an image captured via v4l from a webcam.

[lessthanoptimal]

I actually need the original image since it's the internal color model that got screwed up. However, it might be fixed in the current GIT code. The most recent stable release requires you to manually call ConvertBufferedImage.orderBandsIntoRGB() to put it into RGB or RGBA order, one of the examples goes over this. In the latest code this is handled by a flag in convertFromMulti() and convertTo(). In both of those functions set orderRgb to true and it "should" be handled correctly.

[thhart]

Hello Peter, thanks for the tip. OrderBandsIntoRGB fixes the issue. However I don't understand your request of the original image. The image I provided is the original one and should be loaded via ImageIO.

         BufferedImage read = ImageIO.read(new File("/tmp/analyze.jpg"));
         MultiSpectral srcImg = ConvertBufferedImage.convertFromMulti(read, null, ImageFloat32.class);
         try {
            // ConvertBufferedImage.orderBandsIntoRGB(srcImg, read);
            ImageIO.write(ConvertBufferedImage.convertTo(srcImg, null), "jpg", new File("/tmp/analyze-converted.jpg"));
         } catch (IOException ignored) {
         }

[lessthanoptimal]

From your message it sounded like the original image was in PNG format, but you converted it into a JPEG? If that is the case then the way color is encoded was change and I wouldn't be able to reproduce the problem on my end exactly the same.

Since orderBandsIntoRGB fixed it I'm going to close this ticket. In the next release I'm going to change how ConvertBufferedImage handles color to make it easier to use.