what are the codes doing for disparity .pfm?

[JackLee396]

    for i in range(data.shape[0]):
        for j in range(data.shape[1]):
            if j - data[i][j] < 0:
                data[i][j] = -1

It make black areas at bottom-left corner of the disparity image.

[HzZHoO]

I'm also confused about this...

[zcong17huang]

I tried not to use this part，and train the model . It didn't matter and the result is similar。