关键词: 图像与信息处理, 深度提取, 集成成像, 线性插值, 三维场景重建

Abstract:

The extracted depth of object points are assessed by two defined evaluation measurements, the depth precision and the depth correctness. The evaluation results prove the enhancement of depth extraction based on integral imaging by linear interpolation method from two aspects, the whole distribution and the whole deviation. Because of the large number of elemental lenses and the limited number of the sensor pixels, the conventional depth extraction technique based on integral imaging is affected by the low resolution of elemental images. The elemental images are scaled to twice by linear interpolation. The precision of depth extraction is increased by 20%. The correctness of depth extraction is increased by 15%. In integral imaging, the reconstruction of three-dimensional scene and the extraction of depth can be completed at the same time. It is the advantage that other methods of depth extraction do not have. The quality of reconstructed image becomes better by using the extracted depth information after interpolation. Depth extraction based on integral imaging can be used in the background removal of three dimensional scenes.

Key words: image and information processing, depth extraction, integral imaging, linear interpolation, three-dimensional scene reconstruction