Abstract: This application provides a fisheye image processing method, an electronic device, and a computer-readable storage medium. The method includes: acquiring a fisheye image; generating a grayscale image according to the fisheye image; generating a first gradient image in a horizontal direction and a second gradient image in a perpendicular direction; generating an azimuthal image according to the first gradient image and the second gradient image; and determining an effective imaging area according to the azimuthal image. The anti-distortion correction for the fisheye camera is performed in the process of shooting images according to the effective imaging area of the fisheye camera, and thus the imaging area of the fisheye camera is accurately calibrated when the images are shot by the fisheye camera.

Abstract: This application provides a fisheye image processing method, an electronic device, and a computer-readable storage medium. The fisheye method includes: extracting n sampling points in a fisheye image shot by a fisheye camera; determining n sampling points of a fisheye image; determining Cn3 sets of sampling points and corresponding circles; calculating errors of the sets of sampling points; calculating a first accumulated value of the errors and a second accumulated value of the errors of the sets of sampling points; constructing a nonlinear optimization equation; and determining an effective imaging area of the fisheye camera according to the nonlinear optimization equation. The anti-distortion correction for the fisheye camera is performed in the process of shooting images according to the effective imaging area of the fisheye camera.

Abstract: The present invention provides compounds of formula (I): compositions comprising such compounds; the use of such compounds in medicine; and methods of treating patients with such compounds; wherein A, W, R5, n, Z, X, Y and B are as defined herein. The present invention also relates to compounds useful as synthetic intermediates of compounds of formula (I).

Abstract: The present invention provides compounds of formula (I) or (Ia) compositions comprising such compounds; the use of such compounds in therapy; and methods of treating patients with such compounds; wherein A, B, n, R2, R3, R4, R5, and R6 are as defined herein.

Abstract: The present disclosure provides a photographing device and a focusing method therefor, and a computer-readable storage medium therefor. The focusing method includes, if a first rotation direction is inconsistent with a historical rotation direction: determining a first number of driving steps based on a sum of a preset number of driving steps and a preset number of correction steps first, and controlling the motor to rotate for the first number of driving steps in the first rotation direction, wherein the preset number of correction steps is greater than or equal to the number of idling steps of the motor; and controlling the motor to rotate for the preset number of correction steps in a second rotation direction that is opposite to the first rotation direction. The focusing method for a photographing device of the present application has the advantage of high focus speed.