LUT image appears to have swapped axes

We have figured out that the tiff file needs to be 0-512 to be visible on the GUI, that is fine, we just scaled the force upper threshold accordingly. (we had it black until now :D)
But now we have realized that the axes appear to be transposed. On the image below we push the green cursor to the bottom, but the white target is on the right.

Similarly, when the target is on the bottom, the green cursor has to go right to complete the task:

Start by reproducing the GUI behavior with the LUT TIFF and compare the cursor and target positions shown in the issue. Trace the image-to-screen coordinate mapping and verify whether horizontal and vertical axes are transposed; done means targets at the bottom and right align with the corresponding cursor directions.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.