A monitoring device with hdr display function

Abstract

The invention provides a monitoring device with an HDR display function. The monitoring device comprises a display screen, as well as an input module used for receiving Video, VGA, DVI, HDMI, SDI and other monitoring image signals input by a front end; an image conversion module used for converting the received monitoring image signals into a RGB mode to conveniently process an image; and HDR processing module used for mapping image RGB data; and a display module used for sending the processed image signals to the display screen to be displayed. The monitoring device provided by the invention has the following advantages: 1. the HDR image input by the front end is mapped, so an image with obvious details, clear color levels and a high dynamic range effect is displayed in a monitoring display device with a limited dynamic range, and then the image is convenient to be monitored and identified. 2. the HDR processing function is realized by FPGA programmable logic, the programmability is high and the design is flexible. 3. the structure is simple, the cost is low and the use is convenient.

Description

technical field [0001] The invention relates to the monitoring field, more specifically, a monitoring device with HDR display function. Background technique [0002] In natural scenes, the brightness has a wide range. In the dark night, the brightness is 10 -5 cd / m 2 . Strong sunlight brightness can reach 10 10 :1. In contrast, the dynamic range of the brightness of general display devices is very small, such as the brightness range of a general CRT is 1 ~ 100cd / m 2 , the brightness range of general LCD is 1~400cd / m 2 , the dynamic range does not exceed 1000:1. The dynamic range of the two is very different. Ordinary display devices cannot match the real scene, and the displayed picture is completely incomparable with the real picture in nature. To display an effect with high dynamic range on an ordinary display device, it is necessary to map a wide brightness range to the brightness range that can be expressed on paper or screen. [0003] HDR (High Dynamic Range), h...

AI Technical Summary

Problems solved by technology

Corresponding to this is a contradiction: most of the conventional display devices can only support display output with a relatively low dynamic range at present. This situation is difficult to change in a short time due to the constraints of hardware costs.

Conventional display devices cannot guarantee that the user can observe all the information of the scene image, nor can it guarantee the authenticity of the scene perception

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