Biomedical Imaging Group
Department of Microengineering
EPFL

In fact, the lower-right ghost image above shares only one pixel with the original image, as shown by masking out the irrelevant pixels (only the upper-left corner pixel of the translated image remains).

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Give the input image file name (enter ? to cancel):
--> lena.img
Give the input image width:
--> 256
Give the input image height:
--> 256
Give the image origin of the x-axis:
--> 0
Give the image origin of the y-axis:
--> 0
Give the counter-clockwise image rotation angle in degrees:
--> 0
Give the image horizontal translation in pixels:
--> -255
Give the image vertical translation in pixels:
--> -255
Give the degree of the B-spline model [2, 3, 4, 5, 6, 7, 8, 9]:
--> 3
Do you want to mask out the irrelevant part of the image (0: no; 1: yes)?
--> 1
Give the output image file name (enter ? to cancel):
--> result08.img
Done

Left: 256x256 Lena input image. Right: the translated image shares only one pixel with the original image (look at upper-left)


Comments and feedback to: philippe.thevenaz@epfl.ch