Method, device and MCU for adjusting and controlling sub-picture in multiple pictures
A method, device and multipoint control unit device for adjusting and controlling a sub-picture in multiple pictures are provided. The method includes: acquiring the N original video images sent from a plurality of video terminals, adjusting the resolutions of the N original video images and correspondingly displaying the N resolution-adjusted video images in N regions on the display screen of the multipoint control unit, wherein N is a natural number equal to or greater than 1; performing a resolution increase adjustment processing on the video image in any one of the N regions to acquire a resolution-increased video image; and cutting, according to the information of the region where the resolution-increased video image is located, the resolution-increased video image to obtain an image which is located in the region where the resolution-increased video image is located after the cutting. According to the solutions provided herein, an image of interest can be increased in resolution and moved in the region where the image of interest is located on the premise of not affecting the video images in the other regions.
1. A method for adjusting and controlling a sub-picture in multiple pictures, comprising:
acquiring N original video images sent from a plurality of video terminals, adjusting resolutions of the N original video images and correspondingly displaying N video images in N regions on a display screen of a multipoint control unit, wherein N is a natural number equal to or greater than 1;
performing a resolution increase adjustment processing on a video image in any one of the N regions to acquire a resolution-increased video image; and
cutting, according to information of a region where the resolution-increased video image is located, the resolution-increased video image to obtain an image which is located in the region where the resolution-increased video image is located;
wherein the step of performing a resolution increase adjustment processing on the video image in any one of the N regions to acquire a resolution-increased video image comprises:
acquiring an amplification parameter of the video image in any one of the N regions; and
performing a resolution increase adjustment processing on the video image in a corresponding region according to the amplification parameter to obtain a resolution-increased video image;
wherein the step of acquiring the amplification parameter of the video image in any one of the N regions comprises:
acquiring an instruction carrying information about amplification rate of the video image in a region; and
acquiring the amplification parameter of the video image in a corresponding region according to the information about amplification rate in the instruction;
wherein the step of performing a resolution increase adjustment processing on the video image in a corresponding region according to the amplification parameter to obtain a resolution-increased video image comprises:
amplifying the video image in a corresponding region according to the amplification parameter, and obtaining the resolution of the amplified image, wherein the resolution of the amplified image is smaller than that of a corresponding original video image;
acquiring information about lost pixels according to the resolution of the amplified image; and
acquiring, according to the information about the lost pixels, lost pixels from corresponding positions of a pre-stored original video image corresponding to the amplified image so as to acquire a resolution-increased video image.
2. The method according to claim 1 , wherein the step of adjusting the resolutions of the N original video images comprises:
performing a sampling processing on the N original video images.
3. The method according to claim 1 , wherein the step of acquiring an instruction carrying the information about amplification rate of the video image in a region comprises:
when a touch and amplify operation on the video image in a region is detected, acquiring an instruction carrying the information about amplification rate of the video image in a corresponding region according to the touch and amplify operation; or
when a selection of an option of amplification on an operation menu of the video image in a region is detected, acquiring an instruction carrying the information about amplification rate of the video image in a corresponding region.
4. The method according to claim 1 , wherein after the step of acquiring the resolution-increased video image, the method further comprises:
acquiring movement track information of the resolution-increased video image; and
translating the resolution-increased video image according to the movement track information.
5. The method according to claim 4 , wherein the step of acquiring the movement track information of the resolution-increased video image comprises:
when a touch-and-move operation on the resolution-increased video image is detected, acquiring the movement track information of the resolution-increased video image according to the touch-and-move operation; or
when a selection of an option of movement track on the operation menu of the resolution-increased video image is detected, acquiring the movement track information of the resolution-increased video image.
6. A device for adjusting and controlling a sub-picture in multiple pictures, comprising:
a first acquisition module, configured to acquire N original video images sent from a plurality of video terminals, adjust resolutions of the N original video images and correspondingly display the N resolution-adjusted video images in N regions on a display screen of a multipoint control unit, wherein N is a natural number equal to or greater than 1;
a second acquisition module, configured to perform a resolution increase adjustment processing on the video image in any one of the N regions to acquire a resolution-increased video image; and
a third acquisition module, configured to cut, according to information of the region where the resolution-increased video image is located, the resolution-increased video image to obtain an image which is located in the region where the resolution-increased video image is located;
wherein a second acquisition module is further configured to:
acquire an instruction carrying information about amplification rate of the video image in a region;
acquire the amplification parameter of the video image in a corresponding region according to the information about amplification rate in the instruction;
amplify the video image in a corresponding region according to the amplification parameter, and obtain the resolution of the amplified image, wherein the resolution of the amplified image is smaller than that of a corresponding original video image;
acquire information about lost pixels according to the resolution of the amplified image; and
acquire, according to the information about the lost pixels, lost pixels from corresponding positions of a pre-stored original video image corresponding to the amplified image so as to acquire a resolution-increased video image.
7. A multipoint control unit, comprising the device for adjusting and controlling a sub-picture in multiple pictures as claimed in claim 6 .