|  | 
 | pngsuite | 
 | -------- | 
 | (c) Willem van Schaik, 1999 | 
 |  | 
 | Permission to use, copy, and distribute these images for any purpose and | 
 | without fee is hereby granted. | 
 |  | 
 | These 15 images are part of the much larger PngSuite test-set of  | 
 | images, available for developers of PNG supporting software. The  | 
 | complete set, available at http:/www.schaik.com/pngsuite/, contains  | 
 | a variety of images to test interlacing, gamma settings, ancillary | 
 | chunks, etc. | 
 |  | 
 | The images in this directory represent the basic PNG color-types: | 
 | grayscale (1-16 bit deep), full color (8 or 16 bit), paletted | 
 | (1-8 bit) and grayscale or color images with alpha channel. You | 
 | can use them to test the proper functioning of PNG software. | 
 |  | 
 |     filename      depth type | 
 |     ------------ ------ -------------- | 
 |     basn0g01.png  1-bit grayscale | 
 |     basn0g02.png  2-bit grayscale | 
 |     basn0g04.png  4-bit grayscale | 
 |     basn0g08.png  8-bit grayscale | 
 |     basn0g16.png 16-bit grayscale | 
 |     basn2c08.png  8-bit truecolor | 
 |     basn2c16.png 16-bit truecolor | 
 |     basn3p01.png  1-bit paletted | 
 |     basn3p02.png  2-bit paletted | 
 |     basn3p04.png  4-bit paletted | 
 |     basn3p08.png  8-bit paletted | 
 |     basn4a08.png  8-bit gray with alpha | 
 |     basn4a16.png 16-bit gray with alpha | 
 |     basn6a08.png  8-bit RGBA | 
 |     basn6a16.png 16-bit RGBA | 
 |  | 
 | Here is the correct result of typing "pngtest -m *.png" in | 
 | this directory: | 
 |  | 
 | Testing basn0g01.png: PASS (524 zero samples) | 
 |  Filter 0 was used 32 times | 
 | Testing basn0g02.png: PASS (448 zero samples) | 
 |  Filter 0 was used 32 times | 
 | Testing basn0g04.png: PASS (520 zero samples) | 
 |  Filter 0 was used 32 times | 
 | Testing basn0g08.png: PASS (3 zero samples) | 
 |  Filter 1 was used 9 times | 
 |  Filter 4 was used 23 times | 
 | Testing basn0g16.png: PASS (1 zero samples) | 
 |  Filter 1 was used 1 times | 
 |  Filter 2 was used 31 times | 
 | Testing basn2c08.png: PASS (6 zero samples) | 
 |  Filter 1 was used 5 times | 
 |  Filter 4 was used 27 times | 
 | Testing basn2c16.png: PASS (592 zero samples) | 
 |  Filter 1 was used 1 times | 
 |  Filter 4 was used 31 times | 
 | Testing basn3p01.png: PASS (512 zero samples) | 
 |  Filter 0 was used 32 times | 
 | Testing basn3p02.png: PASS (448 zero samples) | 
 |  Filter 0 was used 32 times | 
 | Testing basn3p04.png: PASS (544 zero samples) | 
 |  Filter 0 was used 32 times | 
 | Testing basn3p08.png: PASS (4 zero samples) | 
 |  Filter 0 was used 32 times | 
 | Testing basn4a08.png: PASS (32 zero samples) | 
 |  Filter 1 was used 1 times | 
 |  Filter 4 was used 31 times | 
 | Testing basn4a16.png: PASS (64 zero samples) | 
 |  Filter 0 was used 1 times | 
 |  Filter 1 was used 2 times | 
 |  Filter 2 was used 1 times | 
 |  Filter 4 was used 28 times | 
 | Testing basn6a08.png: PASS (160 zero samples) | 
 |  Filter 1 was used 1 times | 
 |  Filter 4 was used 31 times | 
 | Testing basn6a16.png: PASS (1072 zero samples) | 
 |  Filter 1 was used 4 times | 
 |  Filter 4 was used 28 times | 
 | libpng passes test | 
 |  | 
 | Willem van Schaik | 
 | <willem@schaik.com> | 
 | October 1999 |