Oracle carved text repairing method based on form prior characteristics

Abstract

The invention discloses an oracle carved character restoration method based on form prior features, and the method comprises the steps: firstly removing the punctiform noise of an oracle carved image,and obtaining an image after preliminary noise reduction; secondly, by analyzing the area distribution characteristics of the oracle alphabet area and the noise area, judging the connected areas smaller than the area mean value and the connected areas with the small length-width ratio as noise and filling the noise, so as to remove sheet-shaped stripes and inherent textures of the oracle carved image; finally, carrying out edge detection based on a Sobel operator, contour tracking based on a four-chain code and edge pixel segment analysis and inflection point extraction based on an edge vector included angle, carrying out smooth restoration based on pixel segment translation on the concave-convex edge of the oracle character, and then achieving edge restoration of the oracle character while the character pattern is kept as much as possible.

Description

technical field [0001] The present invention relates to the intersection field of digital image processing and ancient text information processing, especially a kind of can effectively resist the interference of dot noise, flaky markings and inherent texture on tortoise shell and animal bone, high accuracy, good robustness, processing A fast and self-adaptive restoration method for inscriptions on oracle bone inscriptions based on morphological prior features. Background technique [0002] Oracle bone inscriptions are written in the late Shang Dynasty using tortoise shells and animal bones for recording and divination. As the earliest mature writing system discovered in my country so far, it has extremely important protection value, research value and lofty symbolic significance. Oracle bone inscriptions are not only the earliest traceable source of Chinese language, culture, and history, but also the source of Chinese characters and the root of Chinese excellent traditiona...

AI Technical Summary

Problems solved by technology

However, because the fractal dimensions of the inherent texture and flaky patterns in oracle bone rubbings are often similar to real oracle bone characters, the above two methods only have good resistance to point noise on oracle bone rubbing images, but are not Its inherent texture and flaky speckle interference are not robust enough

[0006] To sum up, there is currently no one that can resist point noise, patchy markings and inherent texture interference on tortoise shells and animal bones at the same time. It has high accuracy, good robustness, fast processing speed, and self-adaptive ability. The automatic restoration method of oracle bone inscriptions

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