Method for increasing imaging utilization rate of single-sensor double-fish-eye panoramic image

Abstract

The invention discloses a method for increasing the imaging utilization rate of a single-sensor double-fish-eye panoramic image. The target surface of a single sensor falls into areas on two sides ofthe sensor through two imaging circles of a double-fish-eye single prism, and an included angle D is formed between the frontal line of the prism and the central line of the sensor, wherein the included angle D is obtained by the following formula: D < = atan (((H-2 * R) / (W-2 * R)), H is a longitudinal effective pixel of the sensor, W is a transverse effective pixel of the sensor, R is the radiusof an imaging circle, and D is an included angle between a prism frontal line and a transverse center line of the sensor; when the picture of the target surface of the sensor is 16: 9, the included angle D is 9.98 degrees; when the picture of the target surface of the sensor is 4: 3, the included angle D is 25.59 degrees. According to the invention, the effective utilization rate of the picture bythe single sensor and the double fish eyes is improved, the imaging resolution is further improved, and the limitation of the sensor of which the model selection is limited by 16: 9 in the original scheme is further broadened.

Description

technical field [0001] The invention relates to a method for increasing the utilization rate of a panorama image acquisition sensor, in particular, the imaging utilization rate of a dual fisheye single sensor can be effectively improved. Background technique [0002] At present, the main components of the widely used single sensor (sensor) dual fisheye panoramic image acquisition device are an image sensor (cmos sensor) for image acquisition and a dual fisheye single prism optical system. Generally located on the center line of the sensor, to ensure that the two imaging circles of the double fisheye single prism fall within the two sides of the sensor. The arrangement of the imaging circle is limited by the horizontal effective pixels of the image sensor, which cannot effectively utilize the redundant vertical imaging area, and the utilization rate of the target surface is relatively low. Limited by this, traditional solutions often choose sensors with an aspect ratio of th...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to overcome the problems of low image utilization rate and limited sensor selection in the original scheme, and further improve the effective target surface utilizing the longitudinal direction by improving the combination of the original sensor and the optical system.

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