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imread

Read image from graphics file.

Syntax

A = imread(filename)
[A, map] = imread(filename)
[A, map, transparency] = imread(filename)

Input argument

filename

a row vector characters or scalar string: name of graphics file.

Output argument

A

Image data: array.

map

Colormap: m-by-3 matrix.

transparency

Transparency information: matrix.

Description

imread reads the image data from the given file into a matrix.

Format Description
BMP Windows Bitmap
GIF Graphic Interchange Format (optional)
JPG Joint Photographic Experts Group
JPEG Joint Photographic Experts Group
PNG Portable Network Graphics
PBM Portable Bitmap
PGM Portable Graymap
PPM Portable Pixmap
XBM X11 Bitmap
XPM X11 Pixmap

Example

f = figure();
filename = [tempdir, 'ngc6543a.gif'];
websave(filename, 'https://solarviews.com/raw/ds/ngc6543a.gif');
img = imread(filename);
imagesc(img);

See also

imagesc.

History

Version Description
1.0.0 initial version

Author

Allan CORNET

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