Image correction method and image projection apparatus using the same

摘要

A method for image correction and image projection apparatus using the same are provided, where the image projection apparatus scans a projection light beam on a projection plane to form an image. The image correction method includes the following steps. A plurality of projection points of the projection light beam on the projection plane are sampled to define a projection coordinate system. An image projection area is defined on the projection coordinate system. The projection light beam is moved to scan on the projection plane and projected to the projection points sequentially. Whether the projection point is located in the image projection area is determined. When the projection point is located in the image projection area, a corrected image information is provided to the projection point.

主权项

1. A method for image correction on an image projection apparatus, the image apparatus scanning a projection light beam on a projection plane to form an image, the method for image correction comprising:
sampling a plurality of projection points of the projection light beam on the projection plane to define a projection coordinate system, wherein the sampling step comprises:
calculating a first maximum distance between the projection points along a first axis and calculating a second maximum distance between the projection points along a second axis; anddefining the projection coordinate system according to the first maximum distance and the second maximum distance; defining an image projection area on the projection coordinate system; moving the projection light beam to scan on the projection plane and project to the projection points sequentially; determining whether the projection points is located in the image projection area; and when the projection point is located in the image projection area, providing a corrected image information to the projection point.