07-Jan-2022 21:51:30 image_double_test(): MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2 Test image_double(). IMAGE_DOUBLE_GRAY_TEST(): IMAGE_DOUBLE_GRAY can "double" a gray scale image file. Here, we start with a file that has been halved 3 times. We double it three times, examining each result. Image size of "casablanca8.pgm" is 45 by 58 Size after doubling #1 is 0 by 90 Size after doubling #1 is 116 by Size after doubling #2 is 0 by 180 Size after doubling #2 is 232 by Size after doubling #3 is 0 by 360 Size after doubling #3 is 464 by IMAGE_DOUBLE_GRAY_TEST: Normal end of execution. image_double_test(): Normal end of execution. 07-Jan-2022 21:51:54