Removal of random noises for medical CR images using WT
Zhao Li-rong · Optics and Precision Engineering · 2000
Computed Radiography (CR) is being popularly studied in the world recent years. Compared with common X-ray imaging,CR system applies a special kind of digital message carrier, i.e. Imaging Plate (IP), to detect and digitize image data. With the aid of computer, it's possible for CR system to process and reconstruct X-ray image. Because there exists random noises while detecting X-ray image data, what we get finally is noisy signals, which need to be processed. In the paper,Wavelet Transformation (WT), a time-frequency domain analysis theory was introduced into X-ray image data detection and image reconstruction. Based on WT, removal of random noises of CR images has been accomplished in our work.