CAJ | 학술논문

由于观察距离和角度的不同，待识别的目标图像相对模板图像会存在一定程度的角度畸变和比例畸变，大大限制了光学相关模式识别的发展。将最大平均相关高度(MACH)滤波器用于畸变目标识别，通过优化该滤波器的控制参数，并根据多次的计算机仿真实验和光学实验，使该改进型MACH滤波器具有畸变公差高、相关点明亮等特点。用改进后的MACH滤波器对角度畸变目标和比例畸变目标实施频域滤波，能有效增强相关峰强度，扩大畸变目标识别范围。作为实例，给出了复杂背景下识别汽车的计算机仿真实验和光学实验，有效验证了该算法的可行性。
유우관찰거리화각도적불동，대식별적목표도상상대모판도상회존재일정정도적각도기변화비례기변，대대한제료광학상관모식식별적발전。장최대평균상관고도(MACH)려파기용우기변목표식별，통과우화해려파기적공제삼수，병근거다차적계산궤방진실험화광학실험，사해개진형MACH려파기구유기변공차고、상관점명량등특점。용개진후적MACH려파기대각도기변목표화비례기변목표실시빈역려파，능유효증강상관봉강도，확대기변목표식별범위。작위실례，급출료복잡배경하식별기차적계산궤방진실험화광학실험，유효험증료해산법적가행성。
When observation distance and angle change, angular distortion and scale distortion of target image relative to the template will appear, which limits the development of pattern recognition with correlation recognition technology. The Maximum Average Correlation Height (MACH) filter was applied to recognize distorted targets in this paper. According to multiple computer simulation experiments and optical experiments, the filter has the characteristcs of high distortion tolerance and bright correlation peaks by optimizing the control parameters of the synthesized filter. Distorted targets were filtered in frequency domain by the improved MACH filter, correlation peaks could be sharpened effectively and recognition scope was expanded succesfully. As a practical example, computer simulation experiments and optical experiments for warship in cluttered scene were carried out. The experimental results prove the feasibility of the algorithm.