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

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.