Image processing method for image distortion automatic correction

Abstract

A image processor of automatic calibrating aberration makes use of radon transforming to pick up four sides profiles of business cards and texts, with profile vertex message, we can calibrate the image aberration and establish internal mathematics module of shot equipment and equation groups of business cards and texts aspect ratio parameter, then solve equation groups to get the rectangle object's aspect ratio and apply it to calibrate images to prevent distortion. At last, the invention can identify the image inversion by words identification for judging if it is necessary to circumvolve the calibrated images to get the perfect calibration results. It is very easy to calibrate images without manual practice , we can utilize the invention in most of the imaging equipments ,such as medical imaging, supervising equipment, mobile, digital camera ,digital vision and so on, no wonder that every user can do the operation very easily.

Description

technical field [0001] The present invention relates to a method in the technical field of image processing, in particular to an image processing method for automatic correction of image distortion. Background technique [0002] When shooting business cards, texts and other materials with digital cameras or mobile phones, the captured images are often tilted, and the original rectangular objects such as business cards and texts will be distorted and become arbitrary quadrilaterals. The reason is that when shooting a business card or text, the photographer is not facing and perpendicular to the object to be photographed, but has a certain horizontal distance and offset angle from the object to be photographed. When photographers shoot these materials, they seldom face them squarely and vertically. Therefore, this kind of distortion is very common, which makes it difficult for people to read the information on these materials or do word processing. [0003] After searching th...

AI Technical Summary

Problems solved by technology

The invention of this technology requires the user to operate by himself, cannot realize automatic correction, the process is complicated, and the accuracy is not high. In addition to the digital camera, a personal computer (PC) and a projector are also required, the equipment is complicated, and the processing process is relatively slow.

[0004] In addition, Photoshop software (software for digital image processing developed by Adobe Corporation of the United States) can also realize the function of image distortion correction, but it must be implemented on a personal computer, and the user needs to manually adjust the correction angle, so errors will occur during the operation. The accuracy is not high, and the automatic correction function cannot be realized

Moreover, this software can only correct the trapezoidal distortion of buildings and other buildings, but cannot correct the shape tilt and trapezoidal distortion of business cards and text, so the application range is small

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