Embedded graph padding method applied to onboard full-posture indicating instrument

Abstract

The invention provides an embedded graph padding method applied to an onboard full-posture indicating instrument. The embedded graph padding method includes the steps that (1) a whole picture is divided into a changeable-layer graph and an unchangeable-layer graph; (2) a DPS calculates boundary coordinates of the horizon line in the changeable-layer graph, scales and coordinates obtained after digital rotation translation transformation; (3) an FPGA reads the boundary coordinates of the horizon line, the scales and digital coordinate parameters to generate boundary marks of the changeable-layer graph, and then padding data are calculated according to the boundary marks and the color and written into a frame storage device. According to the scheme, the characteristic that the operation speed of the FPGA is higher is adopted for executing boundary mark processing and the padding link which are originally executed by the DPS, and the graph processing time can be saved. In addition, only one-time padding needs to be carried out on an unchangeable layer by the FPGA during initialization, processing and padding only need to be carried out on a changeable-layer graph area in the rest of time, and the padding area is reduced.

Description

technical field [0001] The invention belongs to the technical field of embedded graphic filling, and in particular relates to an embedded graphic filling method applied to an airborne full-attitude indicator. Background technique [0002] The current graphics filling method based on the DSP+FPGA architecture is: DSP calculates the boundary of the graphics filling area, and stores the calculated boundary markers into the frame memory; FPGA reads the boundary markers in the frame memory for filling. The whole filling process is as follows: [0003] First, the DSP clears all the boundary marks of the old picture in the frame memory; then completes the calculation of the area boundary of the new picture; by processing pixel by line, it is judged which pixels on each pixel line are on the boundary and the horizon, and these pixels are placed in the frame Make a mark in the memory; finally write the scale, characters and other graphics in the filled area into the frame memory. ...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is aimed at the deficiencies of the prior art, and mainly solves the technical problem that the DSP takes a relatively long time in the process of filling the graphic screen of the full attitude indicator, and provides a kind of technology applied to the airborne full attitude indicator. Embedded shape fill method

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