Method for image transmitting, transmitting device and receiving device
In a method for image transmitting executed in a transmitting device, three data transmitting channels are established, the three data transmitting channels are a first channel, a second channel and a third channel. An image of a video is obtained, and the image is divided into a region of interest and a background region. A first data of the region of interest and a second data of the background region are obtained, and the first data is encoded through fountain coding to obtain a third data. The first data, the second data, and the third data are respectively transmitted through the first channel, the second channel, and the third channel to a receiving device. A network condition is received, and whether the network condition matches a preset condition is determined. When the network condition matches the preset condition, the first data is compensated according to a first preset algorithm.
1. A method for image transmitting, executable in a transmitting device, the method comprising:
establishing a first channel, and a second channel;
obtaining an image of a video, and dividing the image into a region of interest and a background region;
obtaining a first data of the region of interest and a second data of the background region;
transmitting the first data and the second data respectively through the first channel and the second channel to a receiving device;
receiving a network condition feedbacked by the receiving device, and determining whether the network condition matches a preset condition; and
if the network condition is determined to match the preset condition, compensating the first data according to a first preset algorithm.
2. The method of claim 1 , wherein the step of dividing the image into a region of interest and a background region comprises:
dividing the image into the region of interest and the background region according to a content importance level, wherein a content of the image with a higher level of content importance is the region of interest, and a content of the image with a lower level of importance is the background region.
3. The method of claim 1 further comprises:
establishing a third channel;
encoding the first data through fountain coding to obtain a third data;
transmitting the third data through the third channel to the receiving device.
4. The method of claim 3 , wherein the step of transmitting the first data and the second data respectively through the first channel and the second channel to a receiving device further comprises:
encoding the first data of the region of interest into m segments through H264, and transmitting the first data through the first channel;
encoding the second data of the background region into n segments through H264, and transmitting the second data through the second channel; and
encoding the m segments of the region of interest through fountain coding to obtain the third data, and transmitting the third data through the third channel, wherein the third data is k segments of compensation data.
5. The method of claim 4 , the step of compensating the first data according to a first preset algorithm comprises:
reducing a bit rate and a resolution level of the video, and encoding according to the reduced bit rate and resolution level of the video;
adjusting value of k; and
reducing amount of the second data in the background region.
6. A transmitting device, the transmitting device comprising:
at least one processor;
a storage unit; and
one or more programs that are stored in the storage unit and executable by the at least one processor, the one or more programs comprising instructions for:
establishing a first channel and a second channel;
obtaining an image of a video, and dividing the image into a region of interest and a background region;
obtaining a first data of the region of interest and a second data of the background region;
transmitting the first data and the second data respectively through the first channel and the second channel to a receiving device;
receiving a network condition feedbacked by the receiving device, and determining whether the network condition matches a preset condition; and
if the network condition is determined to match the preset condition, compensating the first data according to a first preset algorithm.
7. The transmitting device of claim 6 , wherein the step of dividing the image into a region of interest and a background region comprises:
dividing the image into the region of interest and the background region according to a content importance level, wherein a content of the image with a higher level of content importance is the region of interest, and the content of the image with a lower level of content importance is the background region.
8. The transmitting device of claim 6 further comprises:
establishing a third channel;
encoding the first data through fountain coding to obtain a third data;
transmitting the third data through the third channel to the receiving device.
9. The transmitting device of claim 8 , wherein the step of transmitting the first data and the second data respectively through the first channel and the second channel to a receiving device comprises:
encoding the first data of the region of interest into m segments through H264, and transmitting the first data through the first channel;
encoding the second data of the background region into n segments through H264, and transmitting the second data through the second channel; and
encoding the m segments of the region of interest through fountain coding to obtain the third data, and transmitting the third data through the third channel, wherein the third data is k segments of compensation data.
10. The transmitting device of claim 9 , the step of compensating the first data according to a first preset algorithm comprises:
reducing a bit rate and a resolution level of the video, and encoding according to the reduced bit rate and resolution level of the video;
adjusting value of k; and
reducing amount of the second data in the background region.