Image Noise Reduction with Frequency Analysis
Date Issued
2008
Date
2008
Author(s)
Chong, Chou-Yuh
Abstract
Images captured from digital still cameras are often with a certain amount of noise which is subjected to optical sources and physical limitation of instruments. To capture image with quality acceptable by customers, image signal processor in digital still camera should include noise reduction.f we use image signal processor in digital still camera, rather than post-processing software on personal computer, to reduce noise, we must consider some limitations, such as computation power, memory limit, or even some time constraint. Our method does consider these limitations, making our algorithm as simple as possible, preventing any iterative repetition, and avoiding huge memory usage. We also analyze as much information as possible locally in different frequencies to reduce noise.
Subjects
Image
Noise Reduction
Frequency Analysis
Type
thesis
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