Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
HANDWRITING DRAWING METHOD, APPARATUS, MEDIUM, AND INTERACTIVE TABLET
Document Type and Number:
WIPO Patent Application WO/2022/179544
Kind Code:
A1
Abstract:
The embodiments of the present application provide a handwriting drawing method, an apparatus, a medium, and an interactive tablet. Said method comprises: acquiring touch point information corresponding to a handwriting operation, and acquiring, according to the touch point information, a handwriting axis corresponding to the handwriting operation; according to the size of the handwriting axis and a preset rendering line width, determining a target buffer region; performing compression processing on the target buffer region according to a preset texture resolution to obtain an SDF texture buffer region; calculating a shortest distance from a position corresponding to each texture pixel point of the SDF texture buffer region in the target buffer region to the handwriting axis, and determining the shortest distance as the value of the texture pixel point of the corresponding SDF texture buffer region to obtain an SDF texture image; allocating a rendering buffer region according to the target buffer region, and establishing a mapping relationship between the rendering buffer region and the SDF texture image; and rendering the rendering buffer region on the basis of bilinear interpolation sampling, and then obtaining a handwriting. The present application has small rendering overhead, can improve rendering efficiency, and can timely and effectively display handwriting.

More Like This:
JPH04180093CHARACTER DISPLAY SYSTEM
JPH04369781SYSTEM FOR GENERATING CONTOUR LINE AND STRAIGHT LINE
WO/1994/029782METHOD AND SYSTEM FOR CREATING, SPECIFYING, AND GENERATING PARAMETRIC FONTS
Inventors:
LIN JUNHONG (CN)
Application Number:
PCT/CN2022/077604
Publication Date:
September 01, 2022
Filing Date:
February 24, 2022
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
GUANGZHOU SHIYUAN ELECT TECH (CN)
GUANGZHOU SHIRUI ELECTRONICS CO LTD (CN)
International Classes:
G06T11/20
Foreign References:
CN108564639A2018-09-21
US20200320779A12020-10-08
CN104731390A2015-06-24
US20200279415A12020-09-03
Attorney, Agent or Firm:
GUANGZHOU JUNCY INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: CHIP ENCAPSULATION STRUCTURE AND ELECTRONIC DEVICE

Next Patent: DUAL-TARGET STAR TARGETING CD19 AND CD22