Vector quantization matlab program

Asked 8 days ago. Active 4 days ago. Viewed 27 times. So my questions are: Should theoretically the vector quantizer be more efficient in quantizing both the sources or only in the case of the AR process? Any help will be greatly appreciated, as I am stuck on this for some days. Thanks in advance. Improve this question. Zeosleus Zeosleus 11 3 3 bronze badges. Add a comment. Active Oldest Votes. Improve this answer. Main Content. Open Live Script. You have a modified version of this example.

Do you want to open this example with your edits? No, overwrite the modified version Yes. Quantization levels, specified as an N element vector. Values of the discrete quantization levels must be in monotonically increasing order.

Quantized output image, returned as a numeric array the same size as A. Mapping array, returned as an array the same size as input image A. For more information, see Code Generation for Image Processing. This function fully supports thread-based environments. Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select:. Select the China site in Chinese or English for best site performance.

Other MathWorks country sites are not optimized for visits from your location. The output shows that the mean square distortion after quantizing is much less for the optimized parameters. The quantiz function automatically computes the mean square distortion and returns it as the third output parameter. The code below shows how the quantiz function uses partition and codebook to map a real vector, samp , to a new vector, quantized , whose entries are either -1, 0.

This example illustrates the nature of scalar quantization more clearly. After quantizing a sampled sine wave, it plots the original and quantized signals. The plot contrasts the x 's that make up the sine curve with the dots that make up the quantized signal.

The vertical coordinate of each dot is a value in the vector codebook. Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select:. Select the China site in Chinese or English for best site performance.