2results about How to "Stable brightness" patented technology

The invention discloses a control method and device for a color temperature breathing light supplement lamp, and belongs to the technical field of illumination control. The method comprises the steps that a color temperature control curve is generated according to a preset periodic function, the color temperature control curve represents the change relation of the color temperature proportion along with time, and the color temperature proportion is the proportion of the cold light quantity in the total light quantity; periodically updating a color temperature proportion value corresponding to the current moment according to the color temperature control curve; respectively calculating driving parameters of the cold light emitting unit and the warm light emitting unit according to the color temperature proportion value; and controlling the output of the cold light emitting unit and the warm light emitting unit according to the driving parameters, so that the output color temperature of the light supplementing lamp is periodically and cyclically changed within a preset color temperature range. Breathing control and color temperature control are combined, alternate, continuous and cyclic change of color temperature is achieved, and the playing method of the light supplementing lamp is enriched.

This invention provides a data preprocessing method to ensure balanced brightness in tone-mapped output images. The method combines the characteristics of HDR synthesis with the relationship between exposure ratio and theoretical maximum value of the synthesized HDR image as a reference for preprocessing operations. This allows tone mapping to adapt to various complex environments and maintain stable output brightness, enhancing the adaptability and robustness of the tone mapping process.