Self-adaptive adjusting method and adjusting system for brightness of projection device

Abstract

The invention relates to the technical field of projection adjustment. The embodiment specifically discloses an adaptive adjustment method and adjustment system for the brightness of a projection device, and the method comprises the steps: obtaining the illuminance and projection distance of an environment where the projection device is located through controlling an illuminance sensor and a distance sensor, and searching a function relation among the illuminance of the environment, the illuminance of a projection plane and the projection distance through the analysis and modeling of a large amount of data. In the actual projection process, the illuminance and the projection distance of the working environment of the projection device are collected through the sensor, the projection devicecan be calculated and adjusted to the proper brightness, meanwhile, the stability of color points is guaranteed, the film watching experience of a user is improved, the whole process is automaticallycompleted in an extremely short time without human intervention, and the method is suitable for wide popularization.

Description

technical field [0001] The invention relates to the technical field of projection adjustment, in particular to an adaptive adjustment method and an adjustment system for brightness of a projection device. Background technique [0002] At present, the brightness adjustment in the projection system and the traditional display industry mainly uses the following methods: 1. Manual adjustment: This method requires human participation, and is adjusted by changing the brightness level on the interactive interface or the luminous intensity of a single LED lamp, such as Brightness custom mode, scene mode in traditional TV. Due to the need for human participation, the adjustment takes a long time and requires multiple adjustments, and the impact of user adjustments on the projection white balance is unknown, and there is a problem that the projection color is distorted after the user adjustment is completed. In addition, a variety of scene modes corresponding to different brightnesse...

AI Technical Summary

Problems solved by technology

There are several defects in this method: ① It is necessary to use multiple illuminance sensors to collect the illuminance data of the projection surface in order to accurately estimate the luminance value; in addition, the installation work is cumbersome and complicated, and it is not suitable for portable projection equipment; ② The use of multiple sensors increases the cost

③ Poor fault tolerance in the environment. For example, under strong light irradiation, the illuminance data collected by the illuminance sensor will be higher than the actual projection brightness

The problems of the above adjustment method include: 1. Adjustment efficiency: the existing manual brightness adjustment method requires human participation, the adjustment time is long, the effect is not good, and it needs to be readjusted after the working environment changes.

2. Stability: During automatic adjustment, the data collected by the light sensor is easily affected by the reflected light of the projection screen or the reflected light of the display screen, resulting in poor adjustment effect

3. You can refer to the lack of supplementary environmental data information for brightness adjustment, and the means of brightness adjustment are not used in combination

4. After the brightness is adjusted, the projection color coordinates shift, resulting in color distortion

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