| tresample.1 - plan9port - [fork] Plan 9 from user space | |
| git clone git://src.adamsgaard.dk/plan9port | |
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| --- | |
| tresample.1 (1085B) | |
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| 1 .TH RESAMPLE 1 | |
| 2 .SH NAME | |
| 3 resample \- resample a picture | |
| 4 .SH SYNOPSIS | |
| 5 .B resample | |
| 6 [ | |
| 7 .B -x | |
| 8 .I size | |
| 9 ] [ | |
| 10 .B -y | |
| 11 .I size | |
| 12 ] [ | |
| 13 .I file | |
| 14 ] | |
| 15 .SH DESCRIPTION | |
| 16 .I Resample | |
| 17 resamples its input image (default standard input) to a new size. | |
| 18 The image is decimated or interpolated using | |
| 19 a Kaiser window. | |
| 20 .PP | |
| 21 The size of the resampled image can be specified | |
| 22 with the | |
| 23 .B -x | |
| 24 and | |
| 25 .B -y | |
| 26 options. | |
| 27 An unadorned value sets the number of pixels of that dimension; a suffix… | |
| 28 If only one of | |
| 29 .B -x | |
| 30 or | |
| 31 .B -y | |
| 32 is given, the other dimension is scaled to preserve | |
| 33 the aspect ratio of the original image. | |
| 34 Thus, | |
| 35 .B -x50% | |
| 36 will reduce the image to half its original dimension in both | |
| 37 .B x | |
| 38 and | |
| 39 .BR y . | |
| 40 .PP | |
| 41 The input should be a Plan 9 image | |
| 42 as described in | |
| 43 .MR image (7) , | |
| 44 and the output will be a compressed 24-bit | |
| 45 .B r8g8b8 | |
| 46 image. | |
| 47 To uncompress the image or change the pixel format, use | |
| 48 .I iconv | |
| 49 (see | |
| 50 .MR crop (1) ). | |
| 51 .PP | |
| 52 .SH SOURCE | |
| 53 .B \*9/src/cmd/resample.c | |
| 54 .SH "SEE ALSO | |
| 55 .MR crop (1) , | |
| 56 .MR image (7) | |
| 57 .SH BUGS | |
| 58 Faster algorithms exist, but this implementation produces correct pictur… |