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Continuous OSD storage display method and device

A display device, storage and display technology, applied in the field of image processing, can solve the problems of increased hardware design complexity, waste of memory data space and read memory bandwidth, and achieve the effect of saving memory data space and reducing bandwidth requirements

Active Publication Date: 2019-12-20
MOLCHIP TECH (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When storing and displaying, it leads to a lot of waste of the memory data space of the buffer storage area of ​​​​the GUI layer and the bandwidth of reading the memory.
In view of the above problems, the existing technology usually reduces the waste rate through compression and other methods, but the above methods increase the complexity of hardware design

Method used

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  • Continuous OSD storage display method and device
  • Continuous OSD storage display method and device
  • Continuous OSD storage display method and device

Examples

Experimental program
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Embodiment

[0039] A continuous OSD storage display method, comprising the steps of:

[0040] S100. Collect OSD element information corresponding to the video window in the GUI graphics layer.

[0041] The GUI graphics layer is used to superimpose with the monitoring video screen to form the final display screen.

[0042] The purpose of the OSD elements is to express information to the user. The information expressed includes, but is not limited to, prompt information, warning information, control parameter value display information, and the like.

[0043] The OSD element can be a character type (Font-Based) or a bitmap type (Bit-Map). The principle of character-type OSD is: divide the display content in OSD into blocks according to a specific format (12×18, 12×16, etc.), such as numbers 0-9, letters a-z, commonly used brightness, contrast symbols, etc., and divide them into blocks. These contents are solidified in ROM or Flash, and only the corresponding index numbers are stored in th...

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Abstract

The invention discloses a continuous OSD storage display method and device, and relates to the technical field of image processing. The invention discloses the continuous OSD storage display method. The method comprises the steps of collecting OSD element information corresponding to a video window in a GUI graphic layer; combining the OSD elements according to types, and continuously arranging the OSD elements in a memory for storage based on a preset rule; and reading the stored content, sending each OSD element to the corresponding position of the corresponding segmentation window accordingto the window segmentation information of the current screen, and displaying and outputting the synthesized image after the OSD elements are synthesized with the video layer. According to the invention, the memory data space of the storage area for storing the GUI graphic layer can be saved, and the bandwidth requirement for reading the memory is reduced.

Description

technical field [0001] The invention relates to the technical field of image processing. Background technique [0002] In the field of surveillance, the image finally displayed on the display is usually composed of multiple layers, such as a video layer from one or more surveillance cameras, and a graphic interface layer adapted to it. These logical levels are synthesized according to preset rules to form the final display screen. Composition methods are common, such as overlaying the lower layer by the upper layer or alpha synthesis. [0003] see figure 1 As shown in FIG. 1 , a schematic diagram of displaying surveillance video in the prior art is illustrated, including a graphical user interface (Graphical User Interface, GUI for short) layer 100 , surveillance video 200 and a final display screen 300 on the display. The monitoring video is a 4-channel video input, Image0 represents the video input display image of the 0 channel, Image1 represents the video input displa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/451
CPCG06F9/451
Inventor 陈胤凯孙德印梅佳希张云郑成植何珊刘守浩韦虎董虎
Owner MOLCHIP TECH (SHANGHAI) CO LTD
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