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Image processing method and associated device for correcting fisheye image and reducing perspective distortion

A perspective deformation and fish-eye image technology, applied in image communication, color TV parts, TV system parts, etc., can solve the problems of consuming huge temporary memory space, increasing the cost of digital image processing system, perspective deformation, etc.

Active Publication Date: 2010-06-16
AVISONIC TECH
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Problems solved by technology

[0003] However, the fisheye image restoration processing method in the known technology needs to consume a huge temporary memory space, thus increasing the cost of actually building a digital image processing system, and has serious viewing angle distortion and perspective distortion (Perspective Distortion) problem, resulting in uneven proportions of the scene in the image

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  • Image processing method and associated device for correcting fisheye image and reducing perspective distortion
  • Image processing method and associated device for correcting fisheye image and reducing perspective distortion
  • Image processing method and associated device for correcting fisheye image and reducing perspective distortion

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Embodiment Construction

[0028] The present invention uses the coordinate conversion between the fisheye correction image and the fisheye original image to calculate the pixel value of each pixel of the fisheye correction image, and completes the restoration of the fisheye image at one time, so as to save temporary memory space and reduce perspective deformation effect. The implementation method, principle and constituent elements of the present invention are described below.

[0029] For the operation mode of the fisheye image processing method of the present invention, please refer to figure 1 , figure 1 It is a schematic diagram of a process 10 for a fisheye image processing method according to an embodiment of the present invention. Process 10 includes the following steps:

[0030] Step 100: start.

[0031] Step 102: According to a coordinate transformation function between a fisheye corrected image and a fisheye original image, the fisheye corrected image includes a plurality of pixels, and f...

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Abstract

The invention provides an image processing method and an associated device for correcting a fisheye image and reducing perspective distortion. The fisheye image processing method is used for correcting the fisheye image correction and reducing the perspective distortion and can save the space of a temporary storage and reduce the perspective distortion. The method comprises the following steps: sequentially calculating a fisheye original coordinate value corresponding to each pixel of a plurality of pixels in the fisheye image according to a coordinate conversion function between a fisheye corrected image and a fisheye original image; and calculating the pixel value of each pixel of the fisheye corrected image by interpolation in the fisheye original image according to the fisheye original coordinate value, wherein the coordinate conversion function contains a fisheye coordinate correcting conversion function, a perspective distortion reducing coordinate conversion function and an image cutting zoom-in and zoom-out coordinate conversion function.

Description

technical field [0001] The present invention relates to an image processing method and a related image processing device for fisheye image correction and reduction of perspective distortion that can save temporary storage space and reduce perspective distortion, in particular to a temporary storage space that can be reduced , reducing perspective distortion, fisheye image correction for reducing device cost, image processing method for reducing perspective distortion, and a related image processing device. Background technique [0002] With the improvement of the computing power of the digital image processing system, the images captured by the fisheye camera can be processed at a real-time speed, so that the images captured by the fisheye camera can be clearly displayed in front of the user for the user to identify the image People, things, things in. For example, in applications such as reversing camera systems, building door intercom systems (Door Phone) and general surv...

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Application Information

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IPC IPC(8): H04N5/262H04N5/14
Inventor 游启昌吴明洋宋栢安
Owner AVISONIC TECH
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