CAJ | 학술논문

为了处理多投影无缝拼接技术中重叠区域的光学亮带，研究了Alpha通道衰减的方法。结合对实际投影效果的对比，选取了二次曲线衰减函数，采用该衰减函数对相邻投影面进行亮度衰减，重叠区亮度下降平缓，过渡柔和，有效地消除了重叠区域因物理叠加带来的光学亮带，并且整幅画面过渡自然，视觉效果良好。通过二次曲线衰减函数与线性衰减函数处理后实验结果的对比，二次曲线衰减法融合效果明显优于线性衰减融合法。
위료처리다투영무봉병접기술중중첩구역적광학량대，연구료Alpha통도쇠감적방법。결합대실제투영효과적대비，선취료이차곡선쇠감함수，채용해쇠감함수대상린투영면진행량도쇠감，중첩구량도하강평완，과도유화，유효지소제료중첩구역인물리첩가대래적광학량대，병차정폭화면과도자연，시각효과량호。통과이차곡선쇠감함수여선성쇠감함수처리후실험결과적대비，이차곡선쇠감법융합효과명현우우선성쇠감융합법。
In order to process the optical high brightness band of the overlapping area in the multi-projector's seamless conjoin technology, we make a study of Alpha channel attenuation method. Through the comparison of actual projection effect of several algorithms, we find that the result of two times curve attenuation function shows the best effect. Using the two times curve attenuation function, we decrease the brightness of two adjacent planes of projection. The brightness in overlapping area decreases slowly and transits softly. The optical high brightness band caused by physical superposition has been decreased efficiently. As a result, the whole planes of projection transit naturally and the visual effect is greatly improved. Through the comparison of the result of linear attenuation algorithm and two times curve attenuation algorithm, we find that the effect of two times curve attenuation algorithm is obviously better than linear attenuation algorithm.