Linear array camera automatic focusing method

• Main Authors: LIU JUANXIU, LIANG XIANG, HE GANG, LIU PENG, HU YONG, XIE YU, LIU LIN, YE YUTANG, LIU YONG, NI GUANGMING, ZHANG JING
• Format: Patent
• Language: English
• Published: 18.11.2015
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

The invention discloses a linear array camera automatic focusing method, belonging to the image acquisition field, and especially relates to a linear array camera focusing method. The method comprises: first changing the distance between a shot object and a camera, and meanwhile collecting a target image by a linear array camera; analyzing each collected image and the size of values of image pixels, determining an image not to meet requirements if the image is all black or white, and re-collecting images; splicing all images collected in a whole distance change process into an image; performing gray-scale treatment, de-noising treatment and enhancing treatment on the spliced image; and finally calculating the clearest position in the image, wherein the position at which the image of an object corresponding to the clearest position is collected is a best shooting position. Compared with the prior art, the method has the advantages of low cost, fast speed and small computational complexity.