Patent ID: 8649051
Filing Date: 2014-02-11
Classification: H04N

Abstract:
1. An image composition device comprising: a determination unit that: determines an overlap state between respective pixel strings on corresponding lines in a plurality of first image data pieces by determining whether an overlap exists between overwrite image data and base image data represented by continuous coordinate representation, wherein each of first image data pieces comprises a plurality of continuous pixels and are composed of the same color information, and determines, in response to determining an overlap exists between the respective first image data pieces, a positional relationship between a pixel string in the overwrite image data and a pixel string in the base image data; a composition unit that composes a plurality of second image data pieces based on a result of determination by the determination unit using the positional relationship of the plurality of first image data pieces; and wherein determining the positional relationship between a pixel string in the overwrite image data and a pixel string in the base image data comprises: identifying a positional relationship between a start point and an end point of an overwrite pixel string in the overwrite image data and a start point and an end point of a base pixel string in the base image data, determining if the start point of the base pixel string precedes the start point of the overwrite pixel string, and determining if the end point of the overwrite pixel string precedes the end point of the base pixel string.