CAJ | 학술논문

针对低动态显示设备严重制约高动态范围图像显示的缺点,提出了一种基于分组的高动态范围图像色调映射技术,利用双边滤波技术对图像亮度值进行初步校正,对所得数据进行分组,根据分组数据的平均值惟一确定一个伽马值对图像亮度进行最终修正.实验结果表明,该方法不仅能够实现动态范围压缩,而且能够有效避免光晕和色差等现象,可以广泛应用于各种低动态设备中.
침대저동태현시설비엄중제약고동태범위도상현시적결점,제출료일충기우분조적고동태범위도상색조영사기술,이용쌍변려파기술대도상량도치진행초보교정,대소득수거진행분조,근거분조수거적평균치유일학정일개가마치대도상량도진행최종수정.실험결과표명,해방법불부능구실현동태범위압축,이차능구유효피면광훈화색차등현상,가이엄범응용우각충저동태설비중.
Aiming at the defect of low dynamic display device in high dynamic range image display, this paper proposes a high dynamic range image mapping technology through pixel grouping. This paper changes the image luminance using bilateral filter-ing, then groups them. According to the data’s average, it produces a gamma value to correct the image finally. The experiment shows that, the method not only can realize the dynamic range compression, but also can effectively avoid the phenomenon such as halo and chromatic aberration. It can be widely used in low dynamic range devices.