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A kind of osd display method, device, equipment and storage medium

A display method and azimuth technology, applied in TV, color TV parts, TV system parts, etc., can solve problems such as submerged characters, large occupation, background color interference, etc.

Active Publication Date: 2022-05-24
TP-LINK
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for devices with limited flash storage space such as surveillance cameras, since the loaded freetype font is a relatively large font, it needs to occupy a large amount of flash storage space to respond to the operating efficiency of the device, and at the same time directly display the character information read from the freetype font , background color interference is prone to occur, resulting in the problem that characters are submerged by the background, so the existing OSD display obviously cannot meet the character display requirements of surveillance cameras

Method used

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  • A kind of osd display method, device, equipment and storage medium
  • A kind of osd display method, device, equipment and storage medium
  • A kind of osd display method, device, equipment and storage medium

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Embodiment Construction

[0072] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0073] see figure 1 , an embodiment of the present invention provides an OSD display method, including:

[0074] S11: Read the OSD characters to be processed.

[0075] It should be noted that in the embodiment of the present invention, the storage location and reading method of the OSD characters to be processed are not specifically limited. Taking a surveillance camera as an example, for example, the OSD characters to be processed ...

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Abstract

The present invention discloses an OSD display method, device, equipment and storage medium. The method includes: reading the OSD character to be processed; according to the OSD character, obtaining the character point of the OSD character from a dot matrix font library array; the character lattice is enlarged; according to the positional relationship between each pixel in the enlarged character lattice and the solid pixel, the glyph in the enlarged character lattice is stroked to obtain the lattice OSD character; wherein, the solid pixel point is the pixel point at the position of the glyph in the character dot matrix; the dot matrix OSD character is added to the code stream for OSD display; the present invention can effectively save OSD display The flash storage space occupied by the device is suitable for devices with limited flash storage space, and at the same time reduces the background color interference problem during OSD display and improves the OSD display effect.

Description

technical field [0001] The present invention relates to the technical field of OSD display, and in particular, to an OSD display method, apparatus, device and storage medium. Background technique [0002] On-screen display (OSD, on-screen display) is mainly used to superimpose text information, such as time, location, etc., on the video image, thereby providing more additional information for the video content. OSD can be used as a description and supplement of video images, and with video streaming and storage, it can also provide users with a human-machine interface, enabling users to obtain more additional information. OSD is used in the field of video display, such as TV and surveillance cameras. Broad application value. [0003] The existing OSD is mainly composed of characters, including numbers, letters, Chinese characters, special symbols, etc. The existing OSD character display method is to load large font files such as freetype, and read the displayed characters a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/445
CPCH04N5/44504H04N21/4856H04N21/42653
Inventor 张林李晓东
Owner TP-LINK