| << imformats | Graphics I/O functions | imwrite >> |
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 |
| TIFF | Tagged Image File Format |
| JPEG | Joint Photographic Experts Group |
| PCX | PiCture eXchange |
| 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
History
| Version | Description |
|---|---|
| 1.0.0 | initial version |
| 1.13.0 | pcx, tiff formats added |
Author
Allan CORNET