Projector capable of automatically correcting geometric distortion and correcting method thereof

Abstract

The invention is applicable to the technical field of projected display, and provides a projector capable of automatically correcting geometric distortion. The projector comprises a projector body, wherein a direction sensor , a correction parameter calculation module and a projection lens geometric correction device are installed on the projector body, the input end of the correction parameter calculation module is connected with the direction sensor, the output end of the correction parameter calculation module is connected with the projection lens geometric correction device, the direction sensor detects the inclination angle of the projector body, the correction parameter calculation module processes the data of the inclination angle to generate correction parameters, and the projection lens geometric correction device adjusts a projector lens according to the correction parameters to correct the geometric distortion of a projection image. According to the projector capable of automatically correcting geometric distortion and a correcting method of the projector, the inclination angle of the projector and the distance between the projection lens and a screen can be automatically detected, the correction parameters are generated, the projection lens is adjusted mechanically through the projection lens geometric correction device, and geometric distortion is eliminated. The equipment is compact in structure, wide in application scene, high in anti-interference capacity, high in correction accuracy and suitable for being widely used.

Description

technical field [0001] The invention belongs to the technical field of projection display, in particular to a projector capable of automatically correcting geometric distortion and a correction method thereof. Background technique [0002] Projection equipment usually uses optical technology to realize projection display. Due to reasons such as machine decoration, the picture projected by the projector to the screen always has geometric distortion. The current geometric distortion correction methods include: (1). Manually adjust the distortion knob to correct; (2). Measure and correct the geometric distortion by shooting specific or unspecific images projected by the projector through the camera; (3). Obtain the geometric distortion of the image by installing some kind of sensor on the screen, thereby Make corrections. For example, in the patent application with application number 200910058382, the geometric correspondence between the projected image and the original image ...

AI Technical Summary

Problems solved by technology

[0003] The manual adjustment method is complicated to operate and inconvenient to use; the method of geometric correction of the shooting projection screen is affected by the shooting environment, and there are certain calculation errors; the geometric correction method of the image is realized by installing a sensor on the projection screen. The installation of sensors limits the application scenarios of projection, and the equipment is relatively complex

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