【摘要】 提出新的非线性算子对人眼视觉系统(HVS)明暗分界感觉进行计算机模拟。HVS在不同光照条件下对光强度的响应不同,即为非线性响应,因而应在常规的线性边界提取算子中引入非线性项,以使提取结果更好地与HVS感觉吻合。目前作者已对司明状态下的HVS边界感模拟进行了细致研究,找到了合适的非线性算子,经试验验证,与人眼感觉符合较好。更多还原

【Abstract】 A nonlinear HVS operator to detect gray edge is presented in this paper. It’s more accurate than normal linear edge detect operator when the difference of light intensity in the edge field is small. Further more, in this operator, the theory about HVS edge feeling of bright and dark is conformed to HVS response function to light intensity, the logarithmic function.The results of several experiments are consistent with the feeling of HVS. And normal linear operator can’t successfully detect the edge of the image used in these experiments.更多还原