Method for maintaining and modifying cross-screen writing stroke attributes in display wall positioning system

Abstract

The invention relates to a method, which comprises: performing class encapsulation on each display unit of a display wall, and performing class encapsulation on lines drawn by a light pen each time; using data members to record general attributes such as stroke color, stroke thickness and the like of a certain display unit object in a display unit class, and arranging a line container inside the display unit to store the drawn lines; and judging the position of a coordinate point of a first stroke of a Chinese character first and then processing the stroke attribute according to the position of the coordinate point of the first stroke of the Chinese character under the condition of drawing a line from the first stroke of the Chinese character. The invention provides the method capable of supporting the arbitrary alteration of the attributes such as label and written stroke in a large-screen display wall system by people simultaneously. The invention not only can realize the maintenanceand alteration of the attributes such as the stroke color and the stroke thickness of lines on the current screen but also can realize the maintenance of the stroke attributes of the lines in the whole display wall positioning system under the condition of cross-screen writing and labeling.

Description

technical field [0001] The invention relates to the technical field of mosaic wall positioning, in particular to a method for maintaining and changing attributes of writing strokes between multiple screens in a mosaic wall positioning system that can support simultaneous writing by multiple people. Background technique [0002] With the development of large-screen video wall display technology, the large-scale interactive touch video wall positioning technology based on the video wall display system has also developed by leaps and bounds. The large-screen splicing wall positioning system provides users with various application processing functions such as comprehensive information display and interactive control. [0003] In the existing post-positioning technology of large-screen splicing walls, single-point positioning or multi-point positioning can be realized, that is, it supports multiple people to complete writing positioning on the splicing wall at the same time. In ...

AI Technical Summary

Problems solved by technology

In the existing large-scale wall writing and labeling application system (such as 1×9 wall), if the operator who writes or marks on a certain screen wants to change the color or thickness attribute of the stroke, if the traditional menu or The way of toolbar control is bound to affect other annotators, and it is necessary to go to a specific area of ​​the video wall to click the toolbar or menu, which is a waste of time and resources and does not meet the requirements of practical applications.

Images