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设计了一个可实现无缝拼接系统的研究示例:将一个高分辨率的图像分为两个分图像,按两部分在边缘交叠的方式分别投影。在投影之前,选用简单的线性函数关系,对待重叠部分进行了淡入淡出的处理,经这样叠加后重叠部分的重叠痕迹可适当消除。但鉴于像素信号与亮度之间还应满足伽马(Gamma)关系,故在处理过程中同时进行了Gamma校正的设计。研究过程中,考虑到不同成像终端之间,在色度表征方式以及Gamma校正已有自身规则,可方便转换,文章从简化研究出发,首次采用当前计算机监视器的液晶屏为投影成像的终端,研究它的融合结果,并实测融合图像部分的光强,以检查融合的实际效果。发现采用简单的线性函数并选择2.15的Gamma校正值,较之未作伽马校正前的,能改善融合区与未处理区的亮度差异达两个量级。最后给出了经这样处理后在液晶显示屏上获得较为良好的拼接效果。
An example of a design that can realize a seamless splicing system is designed. A high-resolution image is divided into two sub-images and projected separately in such a way that the two parts are overlapped on the edges. In the projection before the selection of a simple linear function, the treatment of overlapping parts of the fade out of the process, after superimposed overlapping parts of the traces of overlap can be properly eliminated. However, in view of the Gamma relationship between the pixel signal and the brightness, the design of Gamma correction is also performed during the processing. In the research process, taking into account the different imaging terminals between the chrominance characterization and Gamma correction has its own rules, can be easily converted, starting from the simplified study, the first use of the current computer monitor LCD screen projection imaging terminal, Study its fusion results, and measure the light intensity of the fused image part to check the actual effect of the fusion. Found that using a simple linear function and choosing a Gamma correction of 2.15 could improve the brightness difference between the fused and untreated areas by two orders of magnitude compared to before gamma correction. In the end, the better splicing effect is obtained on the liquid crystal display after such processing.