Projection picture and curtain center alignment method and system

Abstract

The invention relates to a projection picture and curtain center alignment method and system. The projection picture and curtain center alignment method comprises the steps of: adjusting the aiming position of a sensor to obtain the position of a curtain boundary line; calculating an inclination angle included angle value when the sensor aims at the curtain boundary line; calculating a curtain midline angle value in the inclination angle included angle range; calculating a deviation angle value according to the inclination angle included angle value and the curtain midline angle value; and adjusting the projection lens according to the offset angle value to enable the projection picture to be located in the center of the curtain. According to the invention, aiming at different curtain heights, sizes and projection distances, the angle projection frame angle is automatically calculated and adjusted, the center of the projection frame is adjusted to the center of the curtain, the operation is simple without manual intervention, the intelligence of the projection device is improved, the calculation method is simple, a high-performance processor does not need to be adapted, the cost islow, and the popularization of the projection device is facilitated.

Description

technical field [0001] The present application relates to the field of projection technology, in particular to a method and system for aligning a projection screen with a screen center. Background technique [0002] Projection devices (for example, projectors) have the advantages of large projection screen area and small machine volume, and gradually enter people's ordinary lives. With the improvement of projection brightness and clarity in projection technology, projectors are becoming more and more popular. Offices, showrooms, homes, theaters and other places have become necessities in people's daily life and work. The projection device needs to adjust the relative position of the projection screen and the screen every time it is used. Only when the projection screen is centered and perpendicular to the screen can a clear and complete projection screen be obtained and the best projection effect be obtained. [0003] However, at present, the position of the projected pictu...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome at least to a certain extent the related technology of using the camera to collect the position of the projected picture and the screen in real time, and perform image analysis, so as to calibrate the actual position of the projected picture of the projector, and the disadvantage of this alignment method is that the projection must be turned on after the picture appears In order to adjust, time and power are wasted. At the same time, the real-time image analysis algorithm needs to be realized by adapting high-performance CPU or GPU. Applying high-performance CPU or GPU to the projector will inevitably increase the cost and power consumption of the projector. To facilitate the popularization of low-cost projection devices, this application provides a method and system for aligning the projection screen with the center of the screen

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