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 -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 -auto-threshold method automatically perform image thresholding -bench iterations    measure performance -bilateral-blur geometry non-linear, edge-preserving, and noise-reducing smoothing filter -black-threshold value force all pixels below the threshold into black -blue-shift factor   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 -brightness-contrast geometry improve brightness / contrast of the image -canny geometry      detect edges in the image -channel mask        set the image channel mask -charcoal radius     simulate a charcoal drawing -chop geometry       remove pixels from the image interior -clahe geometry      contrast limited adaptive histogram equalization -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 -colors value        preferred number of colors in the image -color-threshold start_color-stop_color force all pixels in the color range to white otherwise black -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 -deskew threshold    straighten an image -despeckle           reduce the speckles within an image -distort method args distort images according to given method and args -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 -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 -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       apply a function to the image -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 -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 -kmeans geometry     K means color reduction -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 -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 -range-threshold values perform either hard or soft thresholding within some range of values in an image -region geometry     apply options to a portion of the image -render              render vector graphics -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 -sort-pixels         sort each scanline in ascending order of intensity -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 -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 -wavelet-denoise threshold removes noise from the image using a wavelet transform -white-balance       automagically adjust white balance of image -white-threshold value force all pixels above the threshold into white