Automatic optimization system for CD-phantom image quality

This main proposed an appropriate automatic optimization system as a criterion of Contrast-detail phantom (CD-phantom) image quality. First, the test region is separated from the phantom image of Plexiglas tablet, and four corners region are located linearly. Then the geometry distorted bilinear equation model and the bilinear pixel interpolation are used to recover the image of rectangular test region. Therefore, this present method would locate the squares and cut out the holes region. Finally, the statistics of hole´s Contrast, Signal to Noise Ratio (SNR) and probability density relationship (PDR) are calculated and gathered. The experimental results showed that the method can obtain accurate location and information of holes, and also provide a simple and fast way to achieve that.