Image color changed after image resizing

[jpazardzievska]

I am using Scalr to resize images. I have a problem when trying to resize one image. Scalr is changing the color of the resized image (adds red color). The image that I try to resize is in jpg format.

In short, this is the outline of my code. I read the file from byte array: BufferedImage image = ImageIO.read(bis);

Then I resize the image using imgscalr:

Scalr.resize(image, Scalr.Method.ULTRA_QUALITY, Scalr.Mode.AUTOMATIC, targetWidth, targetHeight);

Then, I write it to output file:

ByteArrayOutputStream baos = new ByteArrayOutputStream(); ImageIO.write(bufferedImage, extension, baos);

The type of the image before and after resizing is same and equals to TYPE_4BYTE_ABGR.

I tried to use this solution https://github.com/rkalla/imgscalr/issues/82 by removing the alpha channel before resizing the image, but no luck, the image then turned to black after resizing.

When writing to output file I use the extension of the image to find the right ImageWriter. I found that using PNGImageWriter is solving the issue. But, is it good solution to use PNGImageWriter to write jpg, jpeg images?

Can you please explain me?

Thank you

[slorber]

I have the same problem (but with input images of type 2 or 6 bellow, both for JPG/PNG). Both images have in common support for alpha but do not include any transparent background.

Any idea?

[mfirry]

Any fix to this?

[Sodacooky]

according to other issue, it might be happen on coverting ARGB(RGBA?) image and the library process only first 3 color byte. i use the method described in https://stackoverflow.com/questions/44182400/how-to-convert-bufferedimage-rgba-to-bufferedimage-rgb to convert the image into RGB format and work well.