Matlab Program For Uniform Quantization Encoding

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  • How can we write matlab code for uniform and non. Learn more about quantization Image Processing Toolbox.
  • The VectorQuantizerEncoder object performs vector quantization encoding. The object finds the nearest codeword by computing a distortion based on Euclidean or weighted Euclidean distance. To perform vector quantization encoding. See System Objects in MATLAB Code Generation (MATLAB Coder).
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I created a method in Matlab for quantizing an Image.But I don't seem to get a good quantization of the image.(For example, when I quantize the image after using DWT and then use IDWT, the image is filled with squares).

what is wrong with the quantization method?

edit: This is for example a the result of DWT->quantizing the LH,HL,HH values ->IDWT. the image is filled with squares.

greg phillip
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One Hot Encoding Matlab

Active6 years, 2 months ago

Non Uniform Quantization

Hey I'm a newbie in matlab. I've read a text image, converted it to a grayscale image and applied sobel operator. Now i want to 'quantize the image'

Jay
JayJay
Uniform quantization

2 Answers

Convert the uint8 image to double and divide by 255. Multiply by amount of quanta you want, say 50, and convert it back to uint8. Now you have quantized it. To view it properly, convert it to double again and divide by 50, use imshow. Sample code:

Matlab Program For Uniform Quantization Encoding Chart

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Shai

Quantization Of Image In Matlab

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