In:
Journal of Medical Imaging and Health Informatics, American Scientific Publishers, Vol. 10, No. 9 ( 2020-08-01), p. 2247-2251
Abstract:
The contouring effects appear when an image is quantized rudely irrespective of the uniform or non-uniform quantization. To mitigate the effects of contouring, a small amount of random noise is added (dithered) to the original image before quantization. Techniques such as dithering
and half-toning are widely used strategies in obtaining images and texts in magazines, newspapers, books, printers, computer monitors, and LCDs. This study explores the dithering technique on a broken foot image with more elaborative methods and results. All the experiments involved in this study, such as quantization, dithering, no dithering, and dithering, quantized, and filtered techniques, are conducted using the Matlab R2016b tool. Overall information and details are retained with the aid of lowpass filtering and highpass filtering, respectively. Simulation results such
as Mean Square Error (MSE) and Peak Signal-to-Noise Ratio (PSNR) are obtained in every stage of the dithering procedure to analyze and compare the performance or accuracy.
Type of Medium:
Online Resource
ISSN:
2156-7018
DOI:
10.1166/jmihi.2020.3134
Language:
English
Publisher:
American Scientific Publishers
Publication Date:
2020
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