| Option |
Description |
| –adaptive-sharpen geometry |
adaptively sharpen pixels; increase effect near edges |
| –adjoin |
join images into a single multi-image file |
| –affine matrix |
affine transform matrix |
| –annotate geometry text |
annotate the image with text |
| –antialias |
remove pixel-aliasing |
| –append |
append an image sequence |
| –authenticate value |
decrypt image with this password |
| –average |
average an image sequence |
| –background color |
background color |
| –bias value |
add bias when convolving an image |
| –black-threshold value |
force all pixels below the threshold into black |
| –blue-primary point |
chromaticity blue primary point |
| –blur geometry |
blur the image |
| –border geometry |
surround image with a border of color |
| –bordercolor color |
border color |
| –channel type |
apply option to select image channels |
| –charcoal radius |
simulate a charcoal drawing |
| –chop geometry |
remove pixels from the image interior |
| –clip |
clip along the first path from the 8BIM profile |
| –clip-path id |
clip along a named path from the 8BIM profile |
| –clone index |
clone an image |
| –contrast-stretch geometry |
improve the contrast in an image by `stretching' the range of intensity value |
| –coalesce |
merge a sequence of images |
| –colorize value |
colorize the image with the fill color |
| –colors value |
preferred number of colors in the image |
| –colorspace type |
alternate image colorspace |
| –combine |
combine a sequence of images |
| –comment string |
annotate image with comment |
| –compose operator |
set image composite operator |
| –composite |
composite image |
| –compress type |
image compression type |
| –contrast |
enhance or reduce the image contrast |
| –convolve coefficients |
apply a convolution kernel to the image |
| –crop geometry |
crop the image |
| –cycle amount |
cycle the image colormap |
| –debug events |
display copious debugging information |
| –define format:option |
define one or more image format options |
| –deconstruct |
break down an image sequence into constituent parts |
| –delay value |
display the next image after pausing |
| –delete index |
delete the image from the image sequence |
| –density geometry |
horizontal and vertical density of the image |
| –depth value |
image depth |
| –despeckle |
reduce the speckles within an image |
| –display server |
get image or font from this X server |
| –dispose method |
GIF disposal method |
| –dither |
apply Floyd/Steinberg error diffusion to image |
| –draw string |
annotate the image with a graphic primitive |
| –edge radius |
apply a filter to detect edges in the image |
| –emboss radius |
emboss an image |
| –encoding type |
text encoding type |
| –endian type |
endianness (MSB or LSB) of the 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 |
| –family name |
render text with this font family |
| –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 |
| –flip |
flip image in the vertical direction |
| –floodfill geometry color |
floodfill the image with color |
| –flop |
flop image in the horizontal direction |
| –font name |
render text with this font |
| –format string |
output formatted image characteristics |
| –frame geometry |
surround image with an ornamental border |
| –fuzz distance |
colors within this distance are considered equal |
| –fx expression |
apply mathematical expression to an image channel(s) |
| –gamma value |
level of gamma correction |
| –gaussian geometry |
gaussian blur an image |
| –geometry geometry |
preferred size or location of the image |
| –gravity type |
horizontal and vertical text placement |
| –green-primary point |
chromaticity green primary point |
| –help |
print program options |
| –identify |
identify the format and characteristics of the image |
| –implode amount |
implode image pixels about the center |
| –insert index |
insert last image into the image sequence |
| –intent type |
type of rendering intent when managing the image color |
| –interlace type |
type of image interlacing scheme |
| –label name |
assign a label to an image |
| –lat geometry |
local adaptive thresholding |
| –layers method |
optimize or compare image layers |
| –level value |
adjust the level of image contrast |
| –limit type value |
pixel cache resource limit |
| –log format |
format of debugging information |
| –loop iterations |
add Netscape loop extension to your GIF animation |
| –map filename |
transform image colors to match this set of colors |
| –mask filename |
set the image clip mask |
| –matte |
store matte channel if the image has one |
| –mattecolor color |
frame color |
| –median radius |
apply a median filter to the image |
| –modulate value |
vary the brightness, saturation, and hue |
| –monitor |
monitor progress |
| –monochrome |
transform image to black and white |
| –morph value |
morph an image sequence |
| –mosaic |
create a mosaic from an image sequence |
| –motion-blur geometry |
simulate motion blur |
| –negate |
replace every pixel with its complementary color |
| –noise radius |
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 |
ordered dither the image |
| –orient type |
image orientation |
| –page geometry |
size and location of an image canvas (setting) |
| –paint radius |
simulate an oil painting |
| –ping |
efficiently determine image attributes |
| –pointsize value |
font point size |
| –posterize levels |
reduce the image to a limited number of color levels |
| –preview type |
image preview type |
| –print string |
interpret string and print to console |
| –process image-filter |
process the image with a custom image filter |
| –profile filename |
add, delete, or apply an image profile |
| –quality value |
JPEG/MIFF/PNG compression level |
| –quiet |
suppress all error or warning messages |
| –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 |
| –red-primary point |
chromaticity red primary point |
| –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 |
| –sampling-factor geometry |
horizontal and vertical sampling factor |
| –scale geometry |
scale the image |
| –scene value |
image scene number |
| –seed value |
pseudo-random number generator seed value |
| –segment values |
segment an image |
| –separate |
separate an image channel into a grayscale image |
| –sepia-tone threshold |
simulate a sepia-toned photo |
| –set attribute value |
set an image attribute |
| –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 |
image lightness rescaling using sigmoidal contrast enhancement |
| –size geometry |
width and height of image |
| –solarize threshold |
negate all pixels above the threshold level |
| –splice geometry |
splice the background color into the image |
| –spread amount |
displace image pixels by a random amount |
| –strip |
strip image of all profiles and comments |
| –stroke color |
graphic primitive stroke color |
| –strokewidth value |
graphic primitive stroke width |
| –stretch type |
render text with this font stretch |
| –style type |
render text with this font style |
| –support factor |
resize support: > 1.0 is blurry, < 1.0 is sharp |
| –swap indexes |
swap two images in the image sequence |
| –swirl degrees |
swirl image pixels about the center |
| –texture filename |
name of texture to tile onto the image background |
| –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 |
| –treedepth value |
color tree depth |
| –trim |
trim image edges |
| –type type |
image type |
| –undercolor color |
annotation bounding box color |
| –units type |
the units of image resolution |
| –unsharp geometry |
sharpen the image |
| –verbose |
print detailed information about the image |
| –version |
print version information |
| –view |
FlashPix viewing transforms |
| –vignette geometry |
soften the edges of the image in vignette style |
| –virtual-pixel method |
access method for pixels outside the boundaries of the image |
| –wave geometry |
alter an image along a sine wave |
| –weight type |
render text with this font weight |
| –white-point point |
chromaticity white point |
| –white-threshold value |
force all pixels above the threshold into white |
| –write filename |
write images to this file |
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