Skimage Python 从图片中读取的像素值与 Java/Photoshop 不同

Question

I want to read the same values from a picture in Python and Java. In python, i use skimage's imread, in Java i use ImageIO.read().

I expect that the two results are pixel-wise equal, but they are not. Photoshop displays the same values as Javas ImageIO, but skimage's result is different.

Here are the lines for Java:

BufferedImage bi = ImageIO.read(new FileInputStream("/Users/.../Downloads/model/input/123456789.jpg"));
bi.getData().getPixel(10,100,new int[3]) //result = [102, 121, 128]

And here for Python:

image = io.imread("/Users/.../Downloads/model/input/123456789.jpg")
image[10][100] #result = [109, 126, 133]

My input Image is RGB and has a sRGB profile. I tried attaching different profiles or removing it completely, without success. I also tried using different libraries for Java(like https://github.com/bytedeco/javacv ) and/or Python... I tried converting to PNG before reading it, but the two results are never truly equal. Why is that?

Here is the image: https://drive.google.com/file/d/1FEWYS4HNZ-SpYCQBx0gQIt-662yjxLfV/view?usp=sharing

Answer 1

I have found the solution.

When reading with skimage in python, i get a HxWxC image, but with ImageIO.read() in Java, i get a WxHxC image.