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add options to rotate and flip images

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Milan Nikolic
2015-11-04 14:20:37 +01:00
parent d7be2f4d5e
commit d70de9f4db
2 changed files with 75 additions and 48 deletions
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README.md
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@@ -14,6 +14,7 @@ Features
- images can be converted to JPEG, PNG, GIF or 4-Bit BMP (16 colors) file format
- reads JPEG, PNG, BMP, GIF, TIFF and WEBP file formats
- choose resize algorithm (NearestNeighbor, Box, Linear, MitchellNetravali, CatmullRom, Gaussian, Lanczos)
- rotate, flip or grayscale images
- export covers from comics
- create thumbnails from covers by [freedesktop](http://www.freedesktop.org/wiki/) specification
@@ -33,12 +34,12 @@ Using
Comic Book convert tool.
Flags:
--help Show context-sensitive help (also try --help-long and --help-man).
--version Show application version.
-o, --outdir="." Output directory
-m, --size=0 Process only files larger then size (in MB)
-R, --recursive Process subdirectories recursively
-Q, --quiet Hide console output
--help Show context-sensitive help (also try --help-long and --help-man).
--version Show application version.
--outdir="." Output directory
--size=0 Process only files larger then size (in MB)
--recursive Process subdirectories recursively
--quiet Hide console output
Args:
<args> filename or directory
@@ -49,33 +50,35 @@ Using
convert [<flags>] <args>...
Convert archive or document (default)
Convert archive or document (default command)
-w, --width=0 Image width
-h, --height=0 Image height
-q, --quality=75 JPEG image quality
-f, --filter=2 0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos
-p, --png Encode images to PNG instead of JPEG
-b, --bmp Encode images to 4-Bit BMP (16 colors) instead of JPEG
-g, --gif Encode images to GIF instead of JPEG
-N, --rgb Convert images that have RGB colorspace (use --no-rgb if you only want to process grayscale images)
-I, --nonimage Leave non image files in archive (use --no-nonimage to remove non image files from archive)
-G, --grayscale Convert images to grayscale (monochromatic)
-s, --suffix=SUFFIX Add suffix to file basename
--width=0 Image width
--height=0 Image height
--quality=75 JPEG image quality
--filter=2 0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos
--png Encode images to PNG instead of JPEG
--bmp Encode images to 4-Bit BMP (16 colors) instead of JPEG
--gif Encode images to GIF instead of JPEG
--rgb Convert images that have RGB colorspace (use --no-rgb if you only want to process grayscale images)
--nonimage Leave non image files in archive (use --no-nonimage to remove non image files from archive)
--grayscale Convert images to grayscale (monochromatic)
--rotate=0 Rotate images, valid values are 0, 90, 180, 270
--flip="none" Flip images, valid values are none, horizontal, vertical
--suffix=SUFFIX Add suffix to file basename
cover [<flags>] <args>...
Extract cover
-w, --width=0 Image width
-h, --height=0 Image height
-q, --quality=75 JPEG image quality
-f, --filter=2 0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos
--width=0 Image width
--height=0 Image height
--quality=75 JPEG image quality
--filter=2 0=NearestNeighbor, 1=Box, 2=Linear, 3=MitchellNetravali, 4=CatmullRom, 6=Gaussian, 7=Lanczos
thumbnail [<flags>] <args>...
Extract cover thumbnail (freedesktop spec.)
-w, --width=0 Image width
-h, --height=0 Image height
--width=0 Image width
--height=0 Image height
Examples
--------
@@ -84,9 +87,9 @@ Rescale images to 1200px for all supported files found in directory with size la
cbconvert --recursive --width 1200 --size 60 /media/comics/Thorgal/
Convert all images in archive to 4bit BMP image and save result in ~/comics directory:
Convert all images in pdf to 4bit BMP image and save result in ~/comics directory:
cbconvert --bmp --outdir ~/comics /media/comics/Garfield/Garfield_01.cbz
cbconvert --bmp --outdir ~/comics /media/comics/Garfield/Garfield_01.pdf
[BMP](http://en.wikipedia.org/wiki/BMP_file_format) format is very good choice for black&white pages. Archive size can be smaller 2-3x and file will be readable by comic readers.