Lossless full-focusing method and device for light field camera

• Main Authors: LIANG ZHIQING, FANG LEI, LIU ZIJI, GUO RENHAO, HE YINGPAN, LI GUANTING, HUANG JIANXIONG
• Format: Patent
• Language: Chinese; English
• Published: 13.08.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

The invention discloses a lossless full-focusing method and device for a light field camera, and the method comprises the steps: determining a central pixel point of each macro pixel in an original light field image, calculating a parallax value between the central pixel point of each macro pixel and a corresponding non-central pixel point, calculating the displacement step length of each macro pixel, then converting the non-central pixel point to a frequency domain, moving each non-central pixel point in the frequency domain according to a displacement step length, converting the moved non-central pixel point to a spatial domain, reconstructing the moved non-central pixel point and a corresponding central pixel point to form a new macro pixel so as to obtain a new light field image, and finally, carrying out dimension reduction processing on the new light field image to obtain a two-dimensional lossless full-focusing image, thereby improving the focusing effect. 本发明公开了一种光场相机的无损全聚焦方法及装置，该方法通过确定原始光场图像中各宏像素的中心像