ade20k dataset label question

[matthewchung74]

Hi, first, thanks for putting all this together!

I'm having a hard time understanding how to identify the labels in this dataset.

I was looking at the csv
https://github.com/CSAILVision/sceneparsing/blob/master/objectInfo150.csv
and grabbed one example for floor , index 4

and then looked at one sample image ADE_train_00000001.png which in photoshop looks like the following when selecting a pixel on the the floor

in that screenshot, the floor has an rgb value of 3 for all channels, and assuming the index is used as the rgb value, shouldn't it be rgb(4,4,4) in photoshop?

I must be misunderstanding, can you help explain?

[matthewchung74]

photoshop was giving the wrong values.