Automatic image equalization for surround-view video camera systems

摘要

A method of automatically equalizing image data generated by a surround-view camera system of a vehicle. The method includes receiving a first, second, third, and fourth data set including image data corresponding to a front, left, right, and rear field of view of the vehicle, respectively. The method also includes identifying a darkest region in the first, second, and third data sets and adjusting a brightness of the image data included in the first, second, and third data sets based on the darkest region. The method further includes adjusting a brightness of the image data included in the fourth data set based on a comparison of the brightness of the image data included in the fourth data set and the adjusted brightness of the image data included in the second and third data sets.

主权项

1. A surround-view camera system for a vehicle, the surround-view camera system comprising:
a first camera positioned on a front side of the vehicle, the first camera producing a first data set including image data corresponding to a front field of view; a second camera positioned on a left side of the vehicle, the second camera producing a second data set including image data corresponding to a left field of view; a third camera positioned on a right side of the vehicle, the third camera producing a third data set including image data corresponding to a right field of view; a fourth camera positioned on a rear side of the vehicle, the fourth camera producing a fourth data set including image data corresponding to a rear field of view; and an electronic control unit configured to
receive the first data set, the second data set, the third data set, and the fourth data set;identify a darkest region in the first data set, the second data set, and the third data set without considering the fourth data set;adjust a brightness of the image data included in the first data set, the second data set, and the third data set based on the darkest region without adjusting the fourth data set; andadjust a brightness of image data included in the fourth data set based on a comparison of the brightness of the image data included in the fourth data set and the adjusted brightness of the image data included in the second data set and the third data set without considering the first data set.