30 results about "Stroke extraction" patented technology

The present invention discloses a method and a device for touching character segmentation in character recognition, and belongs to the character recognition field. The method comprises the steps of carrying out preprocessing to obtain connected domains, an average character width and an average character height of a row image; carrying out connected domain analysis, marking touching connected domains, carrying out stroke extraction for selected touching connected domains, carrying out segmentation point detection of the touching connected domains to obtain pre-segmentation points, and saving character blocks for non-touching connected domains; merging extracted strokes according to the pre-segmentation points to obtain the character blocks; saving the character blocks and turning to a next connected domain for carrying out touching determination, and outputting a character block sequence after all connected domains having been traversed; and merging the character blocks according to reference information and outputting recognition result. The method and the device provided in the invention merge the strokes according to the pre-segmentation points to obtain the character blocks, guaranteeing that segmentation points in a larger scope can be detected, and take the mode that contour information is used to predetect the segmentation points as a parameter in merging, avoiding merging mistakes caused by merging correct segmentation points.

The invention provides a method for automatically extracting strokes of Chinese characters based on manifold learning, which belongs to the fields of artificial intelligence and computer graphics. This method guides the stroke extraction of the target character by constructing a two-dimensional manifold space of the Chinese character skeleton and finding the character with the most similar style as a reference character. The invention can solve the problem that the styles of the reference character and the target character are too different in the data-driven automatic stroke extraction method, and effectively improves the accuracy rate of stroke extraction of Chinese characters.

The invention discloses a method for extracting single-character strokes in calligraphy works. The skeleton strokes of individual characters in calligraphy works are obtained by using a skeleton crawler unit, the stroke width of each stroke of the original single-character in calligraphy works is calculated, and the minimum enclosing area of ​​the outline of the skeleton strokes is obtained. , analyze the relationship between different types of skeleton intersections and the minimum enclosing area of ​​the stroke outline, locate the shared area and determine the type of the shared area, and complete the stroke extraction according to the type of the shared area and the minimum enclosing area of ​​the skeleton stroke outline. The invention can lay a foundation for stroke-based calligraphy character recognition, calligraphy style comparison, and authenticity identification of calligraphy works. By adopting the algorithm provided by the invention, single-character strokes in calligraphy works can be completely extracted, and a stroke extraction method is provided for stroke-based calligraphy character classification, recognition, reconstruction, animation simulation and other related research and applications.