Image processing method, apparatus, device, and video image transmission system

Patent metadata

Field	Value
Publication number	US-10971109-B2
Application number	US-201916403109-A
Country	US
Kind code	B2
Filing date	May 3, 2019
Priority date	Nov 14, 2016
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

An image processing method includes obtaining a first YUV image captured by an on-board image acquisition device operating in a log mode, converting the first YUV image to a second YUV image having a same image format as an image captured by the on-board image acquisition device operating in a normal mode, and transmitting the second YUV image.

First claim

What is claimed is:

1. An image processing method comprising:
obtaining a first YUV image captured by an on-board camera operating in a log mode;
converting the first YUV image to a second YUV image, the second YUV image having a same image format as an image captured by the on-board camera operating in a normal mode, wherein converting the first YUV image to the second YUV image includes:
converting the first YUV image to a first RGB image based on a log mode;
performing an electro-optical conversion based on the log mode on the first RGB image to obtain a linear RGB image based on the log mode;
performing a color-space conversion on the linear RGB image based on the log mode to obtain a linear RGB image based on the normal mode;
performing an opto-electronic conversion based on the normal mode on the linear RGB image based on the normal mode to obtain a second RGB image based on the normal mode; and
converting the second RGB image to the second YUV image based on the normal mode; and

transmitting the second YUV image.

2. The method of claim 1 , wherein transmitting the second YUV image includes:
compressing and encoding the second YUV image; and
transmitting the compressed and encoded second YUV image.

3. The method of claim 1 , wherein:
the first YUV image includes a video image compliant to a log standard; and/or
the second YUV image includes a video image compliant to an encoding standard that specifies an electro-optical transfer function and a corresponding color-space.

4. The method of claim 1 , wherein:
obtaining the first YUV image captured by the on-board camera operating in the log mode includes obtaining the first YUV image from the on-board image acquisition device; and/or
transmitting the second YUV image includes transmitting the second YUV image to an image receiving terminal.

5. An image processing method comprising:
receiving a first YUV image, the first YUV image being an image captured by an on-board camera of an aerial vehicle operating in a log mode;
converting the first YUV image to a second YUV image, the second YUV image having a same image format as an image captured by the on-board camera operating in a normal mode, wherein converting the first YUV image to the second YUV image includes:
converting the first YUV image to a first RGB image based on the log mode;
performing an electro-optical conversion based on the log mode on the first RGB image to obtain a linear RGB image based on the log mode;
performing a color-space conversion on the linear RGB image based on the log mode to obtain a linear RGB image based on the normal mode;
performing an opto-electronic conversion based on the normal mode on the linear RGB image based on the normal mode to obtain a second RGB image based on the normal mode; and
converting the second RGB image to the second YUV image based on the normal mode; and

outputting the second YUV image to a display device for displaying.

6. The method of claim 5 , wherein receiving the first YUV image includes:
receiving a compressed and encoded first YUV image; and
decoding and decompressing the compressed and encoded first YUV image to obtain the first YUV image.

7. The method of claim 5 , wherein:
the first YUV image includes a video image compliant to a log standard; and/or
the second YUV image includes a video image compliant to an encoding standard that specifies an electro-optical transfer function and a corresponding color-space.

8. The method of claim 5 , wherein:
receiving the first YUV image includes receiving the first YUV image by an image receiving terminal; and/or
outputting the second YUV image to the display device for displaying includes outputting the second YUV image to the display device by the image receiving terminal.

9. A video image transmission system comprising:
a first image processing device having a first processing circuit and a first storage device, the first image processing device being disposed at an aerial vehicle sub-system; and
a second image processing device having a second processing circuit and a second storage device, the second image processing device being disposed at a remote control sub-system;
wherein:
the first image processing device is configured to obtain a first YUV image captured by an on-board camera operating in a log mode;
the first image processing device and the second image processing device are configured to convert the first YUV image to a second YUV image, the second YUV image having a same image format as an image captured by the on-board camera operating in a normal mode;
the second image processing device is further configured to output the second YUV image to a display device for displaying; and
the first image processing device is further configured to:
convert the first YUV image to a first RGB image based on the log mode;
perform an electro-optical conversion based on the log mode on the first RGB image to obtain a linear RGB image based on the log mode;
perform a color-space conversion on the linear RGB image based on the log mode to obtain a linear RGB image based on the normal mode;
perform an opto-electronic conversion based on the normal mode on the linear RGB image based on the normal mode to obtain a second RGB image based on the normal mode; and
convert the second RGB image to the second YUV image based on the normal mode.

10. The system of claim 9 , wherein the first image processing device is further configured to:
convert the first YUV image to the second YUV image; and
transmit the second YUV image to the second image processing device.

11. The system of claim 10 , wherein:
the first image processing device is further configured to:
compress and encode the second YUV image; and
transmit the compressed and encoded second YUV image; and

the second image processing device is further configured to:
decode and decompress the compressed and encoded second YUV image transmitted from the first image processing device to obtain the second YUV image.

Assignees

• Sz Dji Technology Co Ltd

Inventors

• Yang Xiaohu
• Lu Yunyou
• He Zhongping
• You Zhongqian

Classifications

• H04N23/667 Primary

  Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes · CPC title

• B64U2101/30

  for imaging, photography or videography · CPC title

• H04N23/66

  Remote control of cameras or camera parts, e.g. by remote control devices · CPC title

• G06F3/1454 Primary

  involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay · CPC title

• B64U2201/20

  Remote controls · CPC title