pbm/pgm/ppm图片的读写（Matlab）

File Specification jpg2ppm.m : Use matlab functions to convert the attached image from .jpg to binary .ppm format. Save it as greens.ppm imread_pxm.m : My own imread() function code to read .ppm/.pgm/.pbm file which can be encoding in either ASCII or Binary. imwrite_pxm.m : My own imwrite() function code to write .ppm/.pgm/.pbm file which can be encoding in either ASCII or Binary. test_imread_pxm.m : Use imread_pxm() to read greens.ppm/.pgm/.pbm && greens1.ppm/.pgm/.pbm, then show them to check the correctness of function imread_pxm(). test_imwrite_pxm.m : Use imwrite_pxm to write .ppm/.pgm/.pbm encoding in ASCII/Binary mode, then show them to check the correctness of function imwrite_pxm(). greens.ppm/.pbm/.pgm (Encoding in Binary) : Images for imread_pxm() function to load. greens1.ppm/.pbm/.pgm (Encoding in ASCII) : Images for imread_pxm() function to load.