Image processing method and device

An image processing and image technology, applied in the field of image processing, can solve the problems of complex optical correction process, high cost, and difficulty, and achieve the effect of avoiding complex imaging process

Inactive Publication Date: 2016-12-07
LETV HLDG BEIJING CO LTD +1
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  • Claims
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Problems solved by technology

[0004] Aiming at the defects in the prior art that the optical correction process of captured images is complex, difficult, and costly, an embodiment of the present invention provides an image processing method, which includes: extracting the actual value of each pixel in the pixel area of ​​the image to be corrected pixel coordinates; and calculating corrected pixel coordinates after correction by using an image correction model for each extracted actual pixel coordinates, so as to obtain a corrected pixel area of ​​the image

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Embodiment 1

[0044] figure 1 is a schematic structural diagram of an image processing device 100 according to an embodiment of an embodiment of the present invention, such as figure 1 As shown, the device may include: an extraction module 10, used to extract the actual pixel coordinates of the pixel area of ​​each pixel in the image to be corrected; and a correction module 20, used to use an image correction model for each extracted actual pixel coordinate Calculating the corrected pixel coordinates to obtain the corrected pixel area of ​​the image.

[0045] With such an embodiment, digital image processing methods can be used to correct the distortion of the image captured by the image to be corrected, so that the image captured by the camera (especially the wide-angle lens) will not be deformed, and the complex imaging process of optical correction can be avoided. , complex design, and higher cost. It should also be understood that the above-mentioned image processing apparatus 100 can...

Embodiment 2

[0057] Figure 4 is a flowchart of a method executed by an image processing device according to an embodiment of an embodiment of the present invention, such as Figure 4 As shown, the difference between Embodiment 2 and Embodiment 1 lies in the step 2 of establishing the image correction model, in which the case of obtaining multiple distortion coefficients is considered. In this case, the optimal solution among multiple distortion coefficients can be determined according to algorithms such as intelligent algorithm or weighted average (ie action 3). For example, the value after weighted average of multiple distortion coefficients can be determined as the optimal solution, or use Genetic algorithm, particle swarm and other intelligent algorithms to solve the optimal solution of multiple pixel coordinate samples. Those skilled in the art can select an appropriate algorithm to solve according to actual conditions (such as accuracy requirements, cost, etc.). Using such embodime...

Embodiment 3

[0059] Figure 5 is a flowchart of a method executed by an image processing device according to an embodiment of an embodiment of the present invention, such as Figure 5 As shown, the difference between Embodiment 3 and Embodiment 1-2 is that it takes into account the fact that the corrected pixel coordinates calculated by using the image correction model are non-integer values. For this case, the correction module 20 may be configured to further determine the integer value of the corrected pixel coordinates by means of pixel interpolation.

[0060] Specifically, in this case, the correction module 20 may perform the following steps:

[0061] Step S11, extracting the actual pixel coordinates of each pixel in the pixel region of the image to be corrected;

[0062] Step S12, using the image correction model to calculate corrected corrected pixel coordinates for each extracted actual pixel coordinate;

[0063] Step S13, judging whether the corrected pixel coordinate after cor...

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Abstract

The embodiment of the invention provides an image processing method and device, and belongs to the technical field of image processing. The method comprises the following steps: extracting the practical pixel coordinate of each pixel in the pixel area of an image to be corrected; and calculating the corrected correction pixel coordinate for each extracted practical pixel coordinate by an image correction model so as to obtain the pixel area of the corrected image. By use of the embodiment of the invention, a shot image can be subjected to distortion correction by a digital image processing method, so that the image shot by a camera (especially a wide-angle lens) does not deform, and the complex imaging process, the complex design and the high cost of optical correction are avoided.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of image processing, and in particular, to an image processing method and an image processing device. Background technique [0002] In the prior art, a wide-angle lens is usually used when taking a selfie of multiple people, for example, when using a front camera of a smart phone to take a selfie of more than two people. However, during the above-mentioned shooting process of the prior art, the inventor found that the use of a wide-angle lens would produce nonlinear distortion, which would distort the captured picture. Although the existence of this kind of distortion will not affect the clarity of the image, it will reduce the position accuracy of the object in the image in some quantitative analysis or image measurement, making it worthless in high-precision measurement, such as the dual camera in the image effect When superimposed, calculation accuracy errors will occur due to disto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/00
CPCG06T3/047G06T3/04
Inventor 于盼
Owner LETV HLDG BEIJING CO LTD
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