摘要
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。
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.
出处
《北京印刷学院学报》
2014年第2期68-71,共4页
Journal of Beijing Institute of Graphic Communication
