Method and device for processing 2D graphics

摘要

A method of processing 2D graphics comprising generating a perspective projection of a 2D graphics by scaling the 2D graphics with a variable ratio, wherein scaling the 2D graphics with the variable ratio comprises interpolating the graphics with a filter, such that a point xp in the perspective projection is generated from a point x0 in the 2D graphics with a following equation x0=1/R(j)*xp+Ph(j), wherein j represents a line index of the point x0, 1/R(j) represents a scaling factor of a length in the 2D graphics versus a length in the perspective projection, and Ph(j) represents a phase shift.

主权项

1. A method comprising:
retrieving, by a reading module, a 2D graphics from a first address of a memory module in sequence; generating, by a scaling module, a perspective projection of the 2D graphics by scaling the 2D graphics with a variable ratio in one direction so as to generate an perspective effect, wherein the 2D graphics comprises a plurality of points x0, wherein scaling the 2D graphics with the variable ratio comprises
interpolating each point x0 in the graphics with a filter, such that a point xp in the perspective projection is generated from the point x0 in the 2D graphics with a following equation x0=1/R(j)*xp+Ph(j), wherein j represents a line index of the point x0, 1/R(j) represents a scaling factor of a length in the 2D graphics versus a length in the perspective projection, and Ph(j) represents a phase shift;for each point x0 in the 2D graphics, repeating interpolating operation; and outputting, by a writing module, the generated perspective projection of the 2D graphic into a second address of the memory module, wherein the first address is different from the second address.