overhead image generation device

Abstract

The present invention provides a bird's-eye view image generating device capable of interpolating display deformation of a distant view area and generating a converted image in which a displayable range is enlarged without complicating calculation processing and increasing load. This bird's-eye view image generation device has: an imaging unit (2) that photographs from a close-up view to a distant view including the ground surface; an image processing device (4) that synthesizes a bird's-eye view image from input images captured by the above-mentioned imaging unit; A unit (6) for displaying the bird’s-eye view image, wherein the image processing device has a storage unit storing a pixel reference lookup table for converting the input image into a bird’s-eye view image by planar projection conversion, The distant view area of ​​the input image is enlarged and synthesized on the distant view side of the bird's-eye view image, and the look-up table weights the input image so that the ratio of the input image is higher from the near view side of the bird's-eye view image to the peripheral and distant view sides.

Description

technical field [0001] The present invention relates to a device for generating a bird's-eye view image that improves the display quality of a distant view, and mainly relates to an improvement of a device for generating a bird's-eye view image that converts an image from a vehicle-mounted camera device into a bird's-eye view image and displays it for the purpose of driving assistance. Background technique [0002] An on-vehicle camera device used for the purpose of driving assistance when the vehicle backs up, etc., has the function of converting the image captured from the rear of the vehicle for parking assistance, and displaying it as if the target is viewed from above the vehicle. The bird's-eye view image obtained by the parking frame and the rear end of the vehicle. Such a bird's-eye view image has a problem in that if an attempt is made to display a wider area behind the vehicle (background), the displayed image will be greatly distorted and become unnatural. [000...

AI Technical Summary

Problems solved by technology

In such bird's-eye view images, there is a problem that if you want to display the rear of the vehicle (background) more widely, the displayed image will be greatly deformed and become unnatural.

However, this method generates a bird's-eye view image by performing three-dimensional coordinate conversion on two virtual projection planes. Therefore, there is a problem in that calculation processing such as matrix and inverse matrix operations is complicated and the amount of processing is increased, and the load is increased. increase

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