Mass center calculation acceleration method based on Shack-Hartmann

• Main Authors: WANG SHUAI, YANG KANGJIAN, ZHAO WANG, LIU SHENGHU, GUAN HONGLI
• Format: Patent
• Language: Chinese; English
• Published: 25.07.2023
• 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 mass center calculation acceleration method based on Shack-Hartmann, and the method comprises the steps: determining an effective row pixel range of a sub-aperture according to the light spot intensity information in a Shack-Hartmann sub-aperture, selecting an effective pixel in a Shack-Hartmann single sub-aperture to carry out the mass center calculation, and carrying out the mass center calculation under the condition that the wavefront restoration precision is not affected. And waiting for invalid pixels in the sub-aperture in the image acquisition process is avoided, so that the centroid calculation speed is accelerated, and the control bandwidth of the adaptive optical system is improved. 本发明公开了一种基于夏克-哈特曼的质心计算加速方法，该方法通过对夏克-哈特曼子孔径中光斑强度信息确定子孔径有效行像素范围，选取夏克-哈特曼单个子孔径中的有效像素进行质心计算，在波前复原精度不受影响的条件下，避免了图像采集过程中对子孔径中无效像素等待从而加速质心计算速度，提高自适应光学系统控制带宽。