So I have 6 different 8-bit greyscale images that I need to half tone. I have us

Question

So I have 6 different 8-bit greyscale images that I need to half tone. I have used imread('image1.jpg') to read all the images. What would the matlab code be to halftone these images. Use imshow() to show the final image.

Image half toning is an important technique to the industry of document processing (e.g. printing, copying, scanning etc.). Continuous-tone (so-called gray-scale) images require 8 bits to represent each pixel. Image half toning refers to the problem of reducing the bit depth to 1 bit (i.e. only allow black or white pixels, which gives the name "half-tone") with minimal loss of image visual quality. The basic idea behind error diffusion is to diffuse the quantization error introduced by halftoning process such that the local average of the halftone image is close to that of the original image. The most popular error diffusion method is called "Floyd-Steinberg method". which is defined as follows. The image is processed in a raster scanning order (i.e. row-by-row). At any location (ul, the halftoning works in the straightforward way, i.e otherwise However, the quantization error ecy,-xi will be diffused to the four nearest NON-CAUSAL neighbors, as shown in the following figure. The error diffusion equations are given by 16 x,+LJ-1 # x,.LJ-1-16e,., Xy 3/16

Explanation / Answer

input_image = imread('image1.jpg); halftone_image = floydHalftone(input_image); figure; imshow(halftone_image);

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