Edge pass filtering of the digitized image of G-banded human metaphasic chromosomes using Daubechies wavelets
Date of Publication
1998
Document Type
Bachelor's Thesis
Degree Name
Bachelor of Science Major in Physics
Subject Categories
Physics
College
College of Science
Department/Unit
Physics
Abstract/Summary
Two-dimensional wavelet transform and inverse wavelet transform methods are used to edge pass filter the digitized image of G-banded human metaphasic chromosomes. Several Daubechies' family of wavelets are applied in the study of improving the phase information of the digitized image of human chromosomes. Implementation of Wavelet Transform and Inverse Wavelet Transform is programmed in C++ programming language using the Pyramidal algorithm. Each digitized image of a G-banded human metaphasic chromosome is configured in a 256 grayscale pixel format and in a PCX graphics file format whose image size is delimited to 256 X 256 pixel size. Specimens imaged under a transmissive light microscope is captured by a CCD (Charged Coupled Device) camera and then digitized by a video frame grabber. The digitized image is stored and processed by a Pentium PC that runs the edge pass filtering program. Low phase band data of the transformed image is then set to zero to highlight the high phase band component. An Inverse Wavelet Transform is implemented to restore the high phase band information of the digitized G-banded human metaphasic chromosome. All Daubechies' family of wavelet filters can evidently increase the edge phase contrast. Higher Daubechies filters brighten up the background of the image while lower Daubechies filters darken the background of the image. There is no significant difference between images among different scales for the same wavelet filter.
Abstract Format
html
Language
English
Format
Accession Number
TU08688
Shelf Location
Archives, The Learning Commons, 12F, Henry Sy Sr. Hall
Physical Description
152 leaves ; Computer printout
Keywords
Human chromosomes; Image processing--Digital techniques; Electric filters (Wave-guide); Karyotypes; Mathematical analysis
Recommended Citation
Rome, M. P., & Carbonell, C. G. (1998). Edge pass filtering of the digitized image of G-banded human metaphasic chromosomes using Daubechies wavelets. Retrieved from https://animorepository.dlsu.edu.ph/etd_bachelors/4499
Embargo Period
1-31-2021
