4 (c) Willem van Schaik, 1999, 2011
6 Permission to use, copy, modify, and distribute these images for any
7 purpose and without fee is hereby granted.
9 The 15 "bas*.png" images are part of the much larger PngSuite test-set of
10 images, available for developers of PNG supporting software. The
11 complete set, available at http:/www.schaik.com/pngsuite/, contains
12 a variety of images to test interlacing, gamma settings, ancillary
15 The "ft*.png" images are "free/libre" replacements for the transparent
16 corresponding t*.png images in the PngSuite.
18 The images in this directory represent the basic PNG color-types:
19 grayscale (1-16 bit deep), full color (8 or 16 bit), paletted
20 (1-8 bit) and grayscale or color images with alpha channel. You
21 can use them to test the proper functioning of PNG software.
24 ------------ ------ --------------
25 basn0g01.png 1-bit grayscale
26 basn0g02.png 2-bit grayscale
27 basn0g04.png 4-bit grayscale
28 basn0g08.png 8-bit grayscale
29 basn0g16.png 16-bit grayscale
30 basn2c08.png 8-bit truecolor
31 basn2c16.png 16-bit truecolor
32 basn3p01.png 1-bit paletted
33 basn3p02.png 2-bit paletted
34 basn3p04.png 4-bit paletted
35 basn3p08.png 8-bit paletted
36 basn4a08.png 8-bit gray with alpha
37 basn4a16.png 16-bit gray with alpha
38 basn6a08.png 8-bit RGBA
39 basn6a16.png 16-bit RGBA
41 ftbbn0g04.png 4-bit grayscale, black bKGD
42 ftbbn2c16.png 16-bit truecolor, black bKGD
43 ftbbn3p08.png 8-bit paletted, black bKGD
44 ftbgn2c16.png 16-bit truecolor, gray bKGD
45 ftbgn3p08.png 8-bit paletted, gray bKGD
46 ftbrn2c08.png 8-bit truecolor, red bKGD
47 ftbwn0g16.png 16-bit gray, white bKGD
48 ftbwn3p08.png 8-bit paletted, white bKGD
49 ftbyn3p08.png 8-bit paletted, yellow bKGD
50 ftp0n0g08.png 8-bit grayscale, opaque
51 ftp0n2c08.png 8-bit truecolor, opaque
52 ftp0n3p08.png 8-bit paletted, opaque
53 ftp1n3p08.png 8-bit paletted, no bKGD
55 Here is the correct result of typing "pngtest -m bas*.png" in
58 Testing basn0g01.png: PASS (524 zero samples)
59 Filter 0 was used 32 times
60 Testing basn0g02.png: PASS (448 zero samples)
61 Filter 0 was used 32 times
62 Testing basn0g04.png: PASS (520 zero samples)
63 Filter 0 was used 32 times
64 Testing basn0g08.png: PASS (3 zero samples)
65 Filter 1 was used 9 times
66 Filter 4 was used 23 times
67 Testing basn0g16.png: PASS (1 zero samples)
68 Filter 1 was used 1 times
69 Filter 2 was used 31 times
70 Testing basn2c08.png: PASS (6 zero samples)
71 Filter 1 was used 5 times
72 Filter 4 was used 27 times
73 Testing basn2c16.png: PASS (592 zero samples)
74 Filter 1 was used 1 times
75 Filter 4 was used 31 times
76 Testing basn3p01.png: PASS (512 zero samples)
77 Filter 0 was used 32 times
78 Testing basn3p02.png: PASS (448 zero samples)
79 Filter 0 was used 32 times
80 Testing basn3p04.png: PASS (544 zero samples)
81 Filter 0 was used 32 times
82 Testing basn3p08.png: PASS (4 zero samples)
83 Filter 0 was used 32 times
84 Testing basn4a08.png: PASS (32 zero samples)
85 Filter 1 was used 1 times
86 Filter 4 was used 31 times
87 Testing basn4a16.png: PASS (64 zero samples)
88 Filter 0 was used 1 times
89 Filter 1 was used 2 times
90 Filter 2 was used 1 times
91 Filter 4 was used 28 times
92 Testing basn6a08.png: PASS (160 zero samples)
93 Filter 1 was used 1 times
94 Filter 4 was used 31 times
95 Testing basn6a16.png: PASS (1072 zero samples)
96 Filter 1 was used 4 times
97 Filter 4 was used 28 times