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Electronic image rotation eliminating method and device

An imaging and electron technology, which is applied in the field of electronic de-imaging methods and equipment, and can solve problems such as cost increase

Active Publication Date: 2021-04-02
AEROSPACE SCI & IND KET TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the embodiment of the present invention provides an electronic image derotation method and equipment, which are used to solve the problem of using a derotation optical prism and a supporting control motor to derotate the image in the prior art, resulting in cost Added technical issues

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  • Electronic image rotation eliminating method and device
  • Electronic image rotation eliminating method and device

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Experimental program
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Embodiment 1

[0048] This embodiment provides an electronic de-image rotation method, which is applied in electronic de-image rotation equipment, such as figure 1 As shown, the methods include:

[0049] S110, acquiring the current YCbCr pixel data of the current image, where the current image is an image with a rotation angle;

[0050] Here, the video decoder can be used to decode the current image to obtain the line synchronization signal, the field synchronization signal and the current YCbCr pixel data corresponding to the current image. After the video decoder decodes the current image, it will send the line synchronization signal, field synchronization signal and current YCbCr pixel data to the electronic derotation device.

[0051] Wherein, the field synchronous signal is used to identify whether the current image is in the blanking period or the effective image area, and the line synchronous signal can identify the row number to which the current pixel image belongs. And when the l...

Embodiment 2

[0090] This embodiment provides an electronic derotation device, which can be an FPGA chip, such as image 3 As shown, the device includes: an acquisition unit 31, a conversion unit 32, an adjustment unit 33, an amplification unit 34, a reading unit 35, and an output unit 36; wherein,

[0091] The acquisition unit 31 is used to acquire the current YCbCr pixel data corresponding to the current image, the current image is an image with a rotation angle; the rotation angle is consistent with the roll angle of the space vehicle;

[0092] A conversion unit 32, configured to convert the current YCbCr pixel data into RGB pixel data based on a preset pixel conversion strategy, and store the RGB pixel data in a memory;

[0093] The adjustment unit 33 is configured to obtain the rotation angle of the aerospace vehicle, and adjust the storage address of the RGB pixel data in the memory based on the rotation angle, so as to derotate the RGB pixel data;

[0094] An amplification unit 34, ...

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Abstract

The invention provides an electronic image rotation eliminating method and device. The method comprises the steps of: obtaining current YCbCr pixel data of a current image; converting the current YCbCr pixel data into RGB pixel data and storing the RGB pixel data in a memory; adjusting a storage address of the RGB pixel data in a memory based on the rotation angle; determining an amplification factor of the RGB pixel data according to the rotation angle, and amplifying the despun RGB pixel data according to the amplification factor; reading the amplified RGB pixel data from the memory; and converting the amplified RGB pixel data into YCbCr pixel data, and outputting the YCbCr pixel data. Thus, the RGB pixel data can be despun and amplified based on the rotation angle, black edges of the image are avoided, and the image quality is ensured. The image always keeps horizontal output, so that a user can conveniently observe and analyze the video image; and according to the invention, imageracemization can be realized on the basis of not increasing any hardware equipment, so that the cost of the carrier is reduced.

Description

technical field [0001] The invention belongs to the technical field of aerospace image processing, and in particular relates to an electronic derotation method and equipment. Background technique [0002] A camera device is usually installed on a space vehicle to observe the separation of the rocket or the ignition and separation of the interstage. Because during the flight of the carrier, the carrier will roll, and the rolling of the carrier will cause the camera device to rotate, thereby causing the image to rotate. When users watch and analyze images or videos, it is easy to cause dizziness and visual fatigue, which brings great inconvenience to users' observation and analysis. [0003] In the prior art, the derotation optical prism and the supporting control motor are generally used to derotate the image, but the prior art needs to increase the mechanical derotation equipment, which not only increases the volume of the carrier but also increases the cost of the carrier;...

Claims

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Application Information

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IPC IPC(8): H04N5/262
CPCH04N5/2628Y02T10/40
Inventor 温凯刘群昌陶金韩明晶李朝伟杨发亮翟致恒
Owner AEROSPACE SCI & IND KET TECH CO LTD