Method for calculating shot object coordinate by using double-fish-eye image and image acquisition device

Abstract

The invention provides a method for calculating a shot object coordinate by using a double-fish-eye image and an image acquisition device. The method comprises the following steps of respectively acquiring a first fisheye image and a second fisheye image comprising an object by using a first fisheye lens and a second fisheye lens of an image acquisition device; detecting the coordinates of the object in the first fisheye image and the second fisheye image; calculating the first and second azimuth angles of the object on the image sensor planes of the first and second fisheye lenses relative tothe fisheye centers of the first and second fisheye images; respectively converting the distances between the object coordinates and the fisheye centers of the first fisheye image and the second fisheye image into a first incident angle and a second incident angle through the lens curves of the first fisheye lens and the second fisheye lens; and finally, according to the first azimuth angle, thesecond azimuth angle, the first incident angle, the second incident angle and the baseline distance between the first fisheye lens and the second fisheye lens, calculating the three-dimensional coordinates of the object by utilizing a trigonometric function. Therefore, the three-dimensional coordinate calculation of the shot object can be realized on the condition that the geometric transformationis not carried out.

Description

technical field [0001] The invention relates to an image acquisition device and method, in particular to a method for calculating the coordinates of a photographed object using a double fisheye image and an image acquisition device. Background technique [0002] Game consoles are one of the indispensable electronic products for modern family entertainment. In order to increase the interaction between players and game content, many game consoles have abandoned the traditional handle control mode and added elements of motion detection. Sensors such as infrared rays are used to detect the user's movement or action in the space, and respond to the control of the game content, thereby greatly increasing the entertainment of the game. [0003] In addition to the early infrared sensing and positioning technology, recent game consoles have also introduced photosphere detection technology. When the user holds the photoball joystick and waved it in the space, the game machine will ta...

AI Technical Summary

Problems solved by technology

[0004]However, due to the limited field of view (FOV) of traditional lenses, this will limit the shooting range of the above-mentioned dual lenses, which will cause the user to move Space is also limited

However, if this lens is replaced with a fisheye lens with a wider field of view, the image obtained by the fisheye lens will be distorted, and fisheye correction must be performed before it can be used for positioning, but the correction process requires geometric transformation (geometry transformation) , which will reduce the pipeline duration of the video image, and may need to be solved by increasing the frame rate (frame rate)

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