oiiotool (1)

oiiotool [filename|option|action]...

The oiiotool program will read images (from any file format for which an ImageInput plugin can be found), perform various operations on them, and write images (in any format for which an ImageOutput plugin can be found).

The oiiotool utility is invoked as follows:

oiiotool args

oiiotool maintains an image stack, with the top image in the stack also called the current image. The stack begins containing no images.

oiiotool arguments consist of image names, or commands. When an image name is encountered, that image is pushed on the stack and becomes the new current image.

Most other commands either alter the current image (replacing it with the alteration), or in some cases will pull more than one image off the stack (such as the current image and the next item on the stack) and then push a new image.

For a complete description, see /usr/share/doc/openimageio-doc/openimageio.pdf.gz.

Options (general):

--help

Print help message

-v

Verbose status messages

-q

Quiet mode (turn verbose off)

--runstats

Print runtime statistics

-a

Do operations on all subimages/miplevels

--info

Print resolution and metadata on all inputs

--metamatch%s

Regex: which metadata is printed with -info -v

--no-metamatch%s

Regex: which metadata is excluded with -info -v

--stats

Print pixel statistics on all inputs

--hash

Print SHA-1 hash of each input image

--colorcount%s

Count of how many pixels have the given color (argument: color;color;...) (optional args: eps=color)

--rangecheck%s%s

Count of how many pixels are outside the low and high color arguments (each is a comma-separated color value list)

--no-clobber

Do not overwrite existing files

--threads%d

Number of threads (default 0 == #cores)

--frames%s

Frame range for '#' wildcards

--framepadding%d

Frame number padding digits

Commands that write images:

-o%s

Output the current image to the named file

Options that affect subsequent image output:

-d%s

'-d TYPE' sets the output data format of all channels, '-d CHAN=TYPE' overrides a single named channel (multiple -d args are allowed).

Data types include: uint8, sint8, uint10, uint12, uint16, sint16, half, float, double

--scanline

Output scanline images

--tile%d%d

Output tiled images (tilewidth, tileheight)

--compression%s

Set the compression method

--quality%d

Set the compression quality, 1-100

--planarconfig%s

Force planarconfig (contig, separate, default)

--adjust-time

Adjust file times to match DateTime metadata

--noautocrop

Do not automatically crop images whose formats don't support separate pixel data and full/display windows

--autotrim

Automatically trim black borders upon output to file formats that support separate pixel data and full/display windows

Options that change current image metadata (but not pixel values):

--attrib%s%s

Sets metadata attribute (name, value)

--sattrib%s%s

Sets string metadata attribute (name, value)

--caption%s

Sets caption (ImageDescription metadata)

--keyword%s

Add a keyword

--clear-keywords

Clear all keywords

--orientation%d

Set the assumed orientation

--rotcw

Rotate orientation 90 deg clockwise

--rotccw

Rotate orientation 90 deg counter-clockwise

--rot180

Rotate orientation 180 deg

--origin%s

Set the pixel data window origin (e.g. +20+10)

--fullsize%s

Set the display window (e.g., 1920x1080, 1024x768+100+0, -20-30)

--fullpixels

Set the 'full' image range to be the pixel data window

--chnames%s

Set the channel names (comma-separated)

Options that affect subsequent actions:

--fail%g

Failure threshold difference (0.000001)

--failpercent%g

Allow this percentage of failures in diff (0)

--hardfail%g

Fail diff if any one pixel exceeds this error (infinity)

--warn%g

Warning threshold difference (0.00001)

--warnpercent%g

Allow this percentage of warnings in diff (0)

--hardwarn%g

Warn if any one pixel difference exceeds this error (infinity)

Actions:

--create%s%d

Create a blank image (args: geom, channels)

--pattern%s%s%d

Create a patterned image (args: pattern, geom, channels)

--kernel%s%s

Create a centered convolution kernel (args: name, geom)

--capture

Capture an image (options: camera=%d)

--diff

Print report on the difference of two images (modified by --fail, --failpercent, --hardfail, --warn, --warnpercent --hardwarn)

--add

Add two images

--sub

Subtract two images

--abs

Take the absolute value of the image pixels

--mul

Multiply two images

--cmul%s

Multiply the image values by a scalar or per-channel constants (e.g.: 0.5 or 1,1.25,0.5)

--cadd%s

Add to all channels a scalar or per-channel constants (e.g.: 0.5 or 1,1.25,0.5)

--chsum

Turn into 1-channel image by summing channels (options: weight=r,g,...)

--paste%s

Paste fg over bg at the given position (e.g., +100+50)

--mosaic%s

Assemble images into a mosaic (arg: WxH; options: pad=0)

--over

'Over' composite of two images

--zover

Depth composite two images with Z channels (options: zeroisinf=%d)

--histogram%s%d

Histogram one channel (options: cumulative=0)

--flip

Flip the image vertically (top<->bottom)

--flop

Flop the image horizontally (left<->right)

--flipflop

Flip and flop the image (180 degree rotation)

--transpose

Transpose the image

--cshift%s

Circular shift the image (e.g.: +20-10)

--crop%s

Set pixel data resolution and offset, cropping or padding if necessary (WxH+X+Y or xmin,ymin,xmax,ymax)

--croptofull

Crop or pad to make pixel data region match the "full" region

--resample%s

Resample (640x480, 50%)

--resize%s

Resize (640x480, 50%) (optional args: filter=%s)

--fit%s

Resize to fit within a window size (optional args: filter=%s, pad=%d)

--convolve

Convolve with a kernel

--blur%s

Blur the image (arg: WxH; options: kernel=name)

--unsharp

Unsharp mask (options: kernel=gaussian, width=3, contrast=1, threshold=0)

--fft

Take the FFT of the image

--ifft

Take the inverse FFT of the image

--fixnan%s

Fix NaN/Inf values in the image (options: none, black, box3)

--fillholes

Fill in holes (where alpha is not 1)

--fill%s

Fill a region (options: color=)

--clamp

Clamp values (options: min=..., max=..., clampalpha=0)

--rangecompress

Compress the range of pixel values > 1 with a log scale (options: luma=0|1)

--rangeexpand

Un-rangecompress pixel values > 1 (options: luma=0|1)

--text%s

Render text into the current image (options: x=, y=, size=, color=)

Image stack manipulation:

--ch%s

Select or shuffle channels (e.g., "R,G,B", "B,G,R", "2,3,4")

--chappend

Append the channels of the last two images

--unmip

Discard all but the top level of a MIPmap

--selectmip%d

Select just one MIP level (0 = highest res)

--subimage%d

Select just one subimage

--pop

Throw away the current image

--dup

Duplicate the current image (push a copy onto the stack)

--swap

Swap the top two images on the stack.

Color management:

--iscolorspace%s

Set the assumed color space (without altering pixels)

--tocolorspace%s

Convert the current image's pixels to a named color space

--colorconvert%s%s

Convert pixels from 'src' to 'dst' color space (without regard to its previous interpretation)

--ociolook%s

Apply the named OCIO look (optional args: from=, to=, inverse=, key=, value=)

--unpremult

Divide all color channels of the current image by the alpha to "un-premultiply"

--premult

Multiply all color channels of the current image by the alpha

Known color spaces: "linear", "sRGB", "Rec709"

iconvert(1), idiff(1), igrep(1), iinfo(1), iv(1), maketx(1).

OpenImageIO was written by Larry Gritz and the other authors and contributors.

This manual page was written by IRIE Shinsuke <[email protected]>, for the Debian project (and may be used by others).