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Octave-Forge - Extra packages for GNU Octave |
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Read image information from a file.
imfinfo returns a structure containing information about the image
stored in the file filename. If there is no file filename,
and ext was specified, it will look for a file named filename
and extension ext, i.e., a file named filename.ext.
The output structure info contains the following fields:
The full name of the image file.
Date of last modification to the file.
Number of bytes of the image on disk
Image format (e.g., "jpeg").
Image height in pixels.
Image Width in pixels.
Number of bits per channel per pixel.
Image type. Value is "grayscale", "indexed",
"truecolor", "CMYK", or "undefined".
X resolution of the image.
Y resolution of the image.
Units of image resolution. Value is "Inch",
"Centimeter", or "undefined".
Time in 1/100ths of a second (0 to 65535) which must expire before displaying the next image in an animated sequence.
Number of iterations to loop an animation.
Endian option for formats that support it. Value is
"little-endian", "big-endian", or "undefined".
Gamma level of the image. The same color image displayed on two different workstations may look different due to differences in the display monitor.
JPEG/MIFF/PNG compression level. Value is an integer in the range [0 100].
Only valid for GIF images, control how successive frames are rendered (how
the preceding frame is disposed of) when creating a GIF animation. Values
can be "doNotSpecify", "leaveInPlace", "restoreBG",
or "restorePrevious". For non-GIF files, value is an empty string.
Value is a 1x8 Matrix with the x,y chromaticity values for white, red, green, and blue points, in that order.
Image comment.
Compression type. Value can be "none", "bzip",
"fax3", "fax4", "jpeg", "lzw",
"rle", "deflate", "lzma", "jpeg2000",
"jbig2", "jbig2", or "undefined".
Colormap for each image.
The orientation of the image with respect to the rows and columns. Value is an integer between 1 and 8 as defined in the TIFF 6 specifications, and for MATLAB compatibility.
Name and version of the software or firmware of the camera or image input device used to generate the image.
The manufacturer of the recording equipment. This is the manufacture of the DSC, scanner, video digitizer or other equipment that generated the image.
The model name or model number of the recording equipment as mentioned on
the field "Make".
The date and time of image creation as defined by the Exif standard, i.e., it is the date and time the file was changed.
The title of the image as defined by the Exif standard.
Name of the camera owner, photographer or image creator.
Copyright notice of the person or organization claiming rights to the image.
A struct with information retrieved from the Exif tag.
A struct with geotagging information retrieved from the Exif tag.
See also: imread, imwrite, imshow, imformats.
Package: octave