image_decimate


image_decimate, an Octave code which decimates an image by removing the even rows and columns, resulting in a file that is about 1/4 the size of the original.

Modifying an image in this way is a very crude method of compression. However, it does suggest how much redundant information exists in a typical image file.

Licensing:

The information on this web page is distributed under the MIT license.

Languages:

image_decimate is available in a MATLAB version and an Octave version. .

Related Data and Programs:

image_decimate_test

image_boundary, an Octave code which reports the pixels which form the boundary between the black and white regions of a simple image.

image_components, an Octave code which seeks the connected "nonzero" or "nonblack" components of an image or integer vector, array or 3D block.

image_contrast, an Octave code which applies image processing techniques to increase the contrast in an image.

image_denoise, an Octave code which applies image processing techniques to remove noise from an image.

image_diffuse, an Octave code which uses diffusion to smooth out an image.

image_double, an Octave code which doubles the height and width of an image by repeating each row and column.

image_edge, an Octave code which demonstrates a simple procedure for edge detection in images.

image_noise, an Octave code which adds noise to an image.

image_quantization, an Octave code which demonstrates how the KMEANS algorithm can be used to reduce the number of colors or shades of gray in an image.

image_rgb_to_gray, an Octave code which makes a grayscale version of an RGB image.

image_threshold, an Octave code which makes a black and white version of a grayscale image by setting all pixels below or above a threshold value to black or white.

Source Code:


Last revised on 04 August 2024.