Afbeeldingen in bulk bewerken: verschil tussen versies

Huidige versie van 9 mei 2018 om 13:25

Hoe schaal je in één keer 1.000 afbeeldingen? Of converteer je ze in één keer van png naar bv. jpg? Daar bestaan prima oplossingen voor. Sinds ca. 2015 gebruik ik Mogrify en dat bevalt heel goed.

Inventaris

Een indruk van een drietal tools.

Gimp Batch Mode

Yep: Gimp kun je via de shell aanroepen én het kan batch-handelingen verrichten. Dat kan zelfs in verschillende talen. Gemakkelijk is anders - Geen aanrader.

ImageMagick & mogrify

Het shell-commando van ImageMagick heet convert
Broertjes van convert is mogrify. Zelfde syntax, maar dan worden bestanden overschreven. Precies wat ik zoek.

Afbeeldingen in bulk bewerken: verschil tussen versies

Huidige versie van 9 mei 2018 om 13:25

Inventaris

Zie ook

Navigatiemenu

Zoeken

@@ Regel 1: / Regel 1: @@
-Hoe schaal je in één keer 1.000 afbeeldingen? Of converteer je ze in één keer van png naar bv. jpg? Daar bestaan prima oplossingen voor...
+Hoe schaal je in één keer 1.000 afbeeldingen? Of converteer je ze in één keer van png naar bv. jpg? Daar bestaan prima oplossingen voor. Sinds ca. 2015 gebruik ik [[Mogrify]] en dat bevalt heel goed.
-== Inventaris van tools ==
+== Inventaris ==
 Een indruk van een drietal ''tools''.
@@ Regel 13: / Regel 13: @@
 * Het shell-commando van ImageMagick heet ''convert''
 * Broertjes van ''convert'' is ''mogrify''. Zelfde syntax, maar dan worden bestanden overschreven. Precies wat ik zoek.
-== Conversie van png naar jpg ==
- mogrify -format jpg *.png
-== Marges verwijderen ==
- mogrify -trim *
-== Resize to a minimal size ==
-Gewone resize:
-<pre>
-mogrify -
-</pre>
 == Zie ook ==
 * [[Gimp Batch Mode]]
+* [[Mogrify]]
-== Appendix: man mogrify ==
-<pre>
-mogrify(1)                                                        General Commands Manual                                                       mogrify(1)
-NAME
-       mogrify  -  resize  an  image,  blur, crop, despeckle, dither, draw on, flip, join, re-sample, and much more. Mogrify overwrites the original image
-       file, whereas, convert(1) writes to a different image file.
-SYNOPSIS
-       mogrify [options] input-file
-OVERVIEW
-       The mogrify program is a member of the ImageMagick(1) suite of tools.  Use it to resize an image, blur, crop, despeckle,  dither,  draw  on,  flip,
-       join, re-sample, and much more. This tool is similar to convert(1) except the original image file is overwritten with any changes you request.
-       For  more information about the mogrify command, point your browser to file:///usr/share/doc/ImageMagick-6/www/mogrify.html or http://www.imagemag‐
-       ick.org/script/mogrify.php.
-DESCRIPTION
-       Image Settings:
-         -adjoin              join images into a single multi-image file
-         -affine matrix       affine transform matrix
-         -alpha option        activate, deactivate, reset, or set the alpha channel
-         -antialias           remove pixel-aliasing
-         -authenticate value  decrypt image with this password
-         -attenuate value     lessen (or intensify) when adding noise to an image
-         -background color    background color
-         -bias value          add bias when convolving an image
-         -black-point-compensation
-                              use black point compensation
-         -blue-primary point  chromaticity blue primary point
-         -bordercolor color   border color
-         -caption string      assign a caption to an image
-         -cdl filename        color correct with a color decision list
-         -channel type        apply option to select image channels
-         -colors value        preferred number of colors in the image
-         -colorspace type     alternate image colorspace
-         -comment string      annotate image with comment
-         -compose operator    set image composite operator
-         -compress type       type of pixel compression when writing the image
-         -decipher filename   convert cipher pixels to plain pixels
-         -define format:option
-                              define one or more image format options
-         -delay value         display the next image after pausing
-         -density geometry    horizontal and vertical density of the image
-         -depth value         image depth
-         -direction type      render text right-to-left or left-to-right
-         -display server      get image or font from this X server
-         -dispose method      layer disposal method
-         -dither method       apply error diffusion to image
-         -encipher filename   convert plain pixels to cipher pixels
-         -encoding type       text encoding type
-         -endian type         endianness (MSB or LSB) of the image
-         -family name         render text with this font family
-         -features distance   analyze image features (e.g. contrast, correlation)
-         -fill color          color to use when filling a graphic primitive
-         -filter type         use this filter when resizing an image
-         -flatten             flatten a sequence of images
-         -font name           render text with this font
-         -format type         image format type
-         -function name       apply a function to the image
-         -fuzz distance       colors within this distance are considered equal
-         -gravity type        horizontal and vertical text placement
-         -green-primary point chromaticity green primary point
-         -intensity method    method to generate intensity value from pixel
-         -intent type         type of rendering intent when managing the image color
-         -interlace type      type of image interlacing scheme
-         -interline-spacing   value set the space between two text lines
-         -interpolate method  pixel color interpolation method
-         -interword-spacing   value set the space between two words
-         -kerning value       set the space between two letters
-         -label string        assign a label to an image
-         -limit type value    pixel cache resource limit
-         -loop iterations     add Netscape loop extension to your GIF animation
-         -mask filename       associate a mask with the image
-         -matte               store matte channel if the image has one
-         -mattecolor color    frame color
-         -metric type         measure differences between images with this metric
-         -monitor             monitor progress
-         -morphology method kernel
-                              apply a morphology method to the image
-         -orient type         image orientation
-         -page geometry       size and location of an image canvas (setting)
-         -path path           write images to this path on disk
-         -ping                efficiently determine image attributes
-         -pointsize value     font point size
-         -precision value     maximum number of significant digits to print
-         -preview type        image preview type
-         -quality value       JPEG/MIFF/PNG compression level
-         -quiet               suppress all warning messages
-         -red-primary point   chromaticity red primary point
-         -regard-warnings     pay attention to warning messages
-         -remap filename      transform image colors to match this set of colors
-         -respect-parentheses settings remain in effect until parenthesis boundary
-         -sampling-factor geometry
-                              horizontal and vertical sampling factor
-         -scene value         image scene number
-         -seed value          seed a new sequence of pseudo-random numbers
-         -size geometry       width and height of image
-         -stretch type        render text with this font stretch
-         -stroke color        graphic primitive stroke color
-         -strokewidth value   graphic primitive stroke width
-         -style type          render text with this font style
-         -synchronize         synchronize image to storage device
-         -taint               declare the image as modified
-         -texture filename    name of texture to tile onto the image background
-         -tile-offset geometry
-                              tile offset
-         -treedepth value     color tree depth
-         -transparent-color color
-                              transparent color
-         -undercolor color    annotation bounding box color
-         -units type          the units of image resolution
-         -verbose             print detailed information about the image
-         -view                FlashPix viewing transforms
-         -virtual-pixel method
-                              virtual pixel access method
-         -weight type         render text with this font weight
-         -white-point point   chromaticity white point
-       Image Operators:
-         -adaptive-blur geometry
-                              adaptively blur pixels; decrease effect near edges
-         -adaptive-resize geometry
-                              adaptively resize image with data dependent triangulation
-         -adaptive-sharpen geometry
-                              adaptively sharpen pixels; increase effect near edges
-         -alpha option        on, activate, off, deactivate, set, opaque, copy
-                              transparent, extract, background, or shape
-         -annotate geometry text
-                              annotate the image with text
-         -auto-gamma          automagically adjust gamma level of image
-         -auto-level          automagically adjust color levels of image
-         -auto-orient         automatically orient image
-         -bench iterations    measure performance
-         -black-threshold value
-                              force all pixels below the threshold into black
-         -blue-shift          simulate a scene at nighttime in the moonlight
-         -blur geometry       reduce image noise and reduce detail levels
-         -border geometry     surround image with a border of color
-         -bordercolor color   border color
-         -brightness-contrast geometry
-                              improve brightness / contrast of the image
-         -cdl filename        color correct with a color decision list
-         -canny geometry      detect edges in the image
-         -charcoal radius     simulate a charcoal drawing
-         -chop geometry       remove pixels from the image interior
-         -clamp               keep pixel values in range (0-QuantumRange)
-         -clip                clip along the first path from the 8BIM profile
-         -clip-mask filename  associate a clip mask with the image
-         -clip-path id        clip along a named path from the 8BIM profile
-         -colorize value      colorize the image with the fill color
-         -color-matrix matrix apply color correction to the image
-         -connected-component connectivity
-                              connected-components uniquely labeled
-         -contrast            enhance or reduce the image contrast
-         -contrast-stretch geometry
-                              improve contrast by `stretching' the intensity range
-         -convolve coefficients
-                              apply a convolution kernel to the image
-         -cycle amount        cycle the image colormap
-         -decipher filename   convert cipher pixels to plain pixels
-         -deskew threshold    straighten an image
-         -despeckle           reduce the speckles within an image
-         -distort method args
-                              distort images according to given method ad args
-         -draw string         annotate the image with a graphic primitive
-         -edge radius         apply a filter to detect edges in the image
-         -encipher filename   convert plain pixels to cipher pixels
-         -emboss radius       emboss an image
-         -enhance             apply a digital filter to enhance a noisy image
-         -equalize            perform histogram equalization to an image
-         -evaluate operator value
-                              evaluate an arithmetic, relational, or logical expression
-         -extent geometry     set the image size
-         -extract geometry    extract area from image
-         -features distance   analyze image features (e.g. contrast, correlation)
-         -fft                 implements the discrete Fourier transform (DFT)
-         -flip                flip image vertically
-         -floodfill geometry color
-                              floodfill the image with color
-         -flop                flop image horizontally
-         -frame geometry      surround image with an ornamental border
-         -function name parameters
-                              apply function over image values
-         -gamma value         level of gamma correction
-         -gaussian-blur geometry
-                              reduce image noise and reduce detail levels
-         -geometry geometry   preferred size or location of the image
-         -grayscale method    convert image to grayscale
-         -ift                 implements the inverse discrete Fourier transform (DFT)
-         -help                print program options
-         -hough-lines geometry
-                               identify lines in the image
-         -identify            identify the format and characteristics of the image
-         -ift                 implements the inverse discrete Fourier transform (DFT)
-         -implode amount      implode image pixels about the center
-         -lat geometry        local adaptive thresholding
-         -layers method       optimize or compare image layers
-         -level value         adjust the level of image contrast
-         -level-colors color,color
-                              level image with the given colors
-         -linear-stretch geometry
-                              improve contrast by `stretching with saturation' the intensity range
-         -liquid-rescale geometry
-                              rescale image with seam-carving
-         -magnify             double the size of the image with pixel art scaling
-         -mean-shift geometry delineate arbitrarily shaped clusters in the image
-         -median geometry     apply a median filter to the image
-         -mode geometry       make each pixel the 'predominant color' of the neighborhood
-         -modulate value      vary the brightness, saturation, and hue
-         -monochrome          transform image to black and white
-         -morphology method kernel
-                              apply a morphology method to the image
-         -motion-blur geometry
-                              simulate motion blur
-         -negate              replace each pixel with its complementary color
-         -noise geometry      add or reduce noise in an image
-         -normalize           transform image to span the full range of colors
-         -opaque color        change this color to the fill color
-         -ordered-dither NxN
-                              add a noise pattern to the image with specific amplitudes
-         -paint radius        simulate an oil painting
-         -perceptible epsilon
-                              pixel value less than |epsilon| become epsilon or -epsilon
-         -polaroid angle      simulate a Polaroid picture
-         -posterize levels    reduce the image to a limited number of color levels
-         -print string        interpret string and print to console
-         -profile filename    add, delete, or apply an image profile
-         -quantize colorspace reduce colors in this colorspace
-         -radial-blur angle   radial blur the image
-         -raise value         lighten/darken image edges to create a 3-D effect
-         -random-threshold low,high
-                              random threshold the image
-         -region geometry     apply options to a portion of the image
-         -render              render vector graphics
-         -repage geometry     size and location of an image canvas
-         -resample geometry   change the resolution of an image
-         -resize geometry     resize the image
-         -roll geometry       roll an image vertically or horizontally
-         -rotate degrees      apply Paeth rotation to the image
-         -sample geometry     scale image with pixel sampling
-         -scale geometry      scale the image
-         -segment values      segment an image
-         -selective-blur geometry
-                              selectively blur pixels within a contrast threshold
-         -sepia-tone threshold
-                              simulate a sepia-toned photo
-         -set property value  set an image property
-         -shade degrees       shade the image using a distant light source
-         -shadow geometry     simulate an image shadow
-         -sharpen geometry    sharpen the image
-         -shave geometry      shave pixels from the image edges
-         -shear geometry      slide one edge of the image along the X or Y axis
-         -sigmoidal-contrast geometry
-                              lightness rescaling using sigmoidal contrast enhancement
-         -sketch geometry     simulate a pencil sketch
-         -solarize threshold  negate all pixels above the threshold level
-         -sparse-color method args
-                              fill in a image based on a few color points
-         -splice geometry     splice the background color into the image
-         -spread amount       displace image pixels by a random amount
-         -statistic type geometry
-                              replace each pixel with corresponding statistic from the neighborhood
-         -strip               strip image of all profiles and comments
-         -swirl degrees       swirl image pixels about the center
-         -threshold value     threshold the image
-         -thumbnail geometry  create a thumbnail of the image
-         -tile filename       tile image when filling a graphic primitive
-         -tint value          tint the image with the fill color
-         -transform           affine transform image
-         -transparent color   make this color transparent within the image
-         -transpose           flip image vertically and rotate 90 degrees
-         -transverse          flop image horizontally and rotate 270 degrees
-         -trim                trim image edges
-         -type type           image type
-         -unique-colors       discard all but one of any pixel color
-         -unsharp geometry    sharpen the image
-         -vignette geometry   soften the edges of the image in vignette style
-         -wave geometry       alter an image along a sine wave
-         -white-threshold value
-                              force all pixels above the threshold into white
-       Image Sequence Operators:
-         -affinity filename   transform image colors to match this set of colors
-         -append              append an image sequence top to botto (use +append for left to right)
-         -clut                apply a color lookup table to the image
-         -coalesce            merge a sequence of images
-         -combine             combine a sequence of images
-         -compare             mathematically and visually annotate the difference between an image and its reconstruction
-         -complex operator    perform complex mathematics on an image sequence
-         -composite           composite image
-         -crop geometry       cut out a rectangular region of the image
-         -deconstruct         break down an image sequence into constituent parts
-         -evaluate-sequence operator
-                              evaluate an arithmetic, relational, or logical expression
-         -flatten             flatten a sequence of images
-         -fx expression       apply mathematical expression to an image channel(s)
-         -hald-clut           apply a Hald color lookup table to the image
-         -morph value         morph an image sequence
-         -mosaic              create a mosaic from an image sequence
-         -poly terms          build a polynomial from the image sequence and the corresponding terms (coefficients and degree pairs)
-         -process arguments   process the image with a custom image filter
-         -separate            separate an image channel into a grayscale image
-         -smush geometry      smush an image sequence together
-         -write filename      write images to this file
-       Image Stack Operators:
-         -delete indexes      delete the image from the image sequence
-         -duplicate count,indexes
-                              duplicate an image one or more times
-         -insert index        insert last image into the image sequence
-         -reverse             reverse image sequence
-         -swap indexes        swap two images in the image sequence
-       Miscellaneous Options:
-         -debug events        display copious debugging information
-         -distribute-cache port
-                              distributed pixel cache spanning one or more servers
-         -help                print program options
-         -log format          format of debugging information
-         -list type           print a list of supported option arguments
-         -version             print version information
-       By default, the image format of `file' is determined by its magic number.  To specify a particular image format, precede the filename with an image
-       format name and a colon (i.e. ps:image) or specify the image type as the filename suffix (i.e. image.ps).  Specify 'file' as '-' for standard input
-       or output.
-SEE ALSO
-       ImageMagick(1)
-COPYRIGHT
-       Copyright (C) 1999-2014 ImageMagick Studio LLC. Additional copyrights and licenses apply  to  this  software,  see  file:///usr/share/doc/ImageMag‐
-       ick-6/www/license.html or http://www.imagemagick.org/script/license.php
-ImageMagick                                                      Date: 2009/01/10 01:00:00                                                      mogrify(1)
-</pre>
-== Bronnen ==
-* http://www.imagemagick.org/script/command-line-processing.php