Option |
Description |
–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 |
forces 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 |
–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 |
perferred 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 |
describe 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 |
–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 |
–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 |
–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 |
forces all pixels above the threshold into white |
–write filename |
write images to this file |