CN103716676A - Video program broadcasting method and device for smart television - Google Patents

Video program broadcasting method and device for smart television Download PDF

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CN103716676A
CN103716676A CN201310749619.8A CN201310749619A CN103716676A CN 103716676 A CN103716676 A CN 103716676A CN 201310749619 A CN201310749619 A CN 201310749619A CN 103716676 A CN103716676 A CN 103716676A
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video
frame
block
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current
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CN103716676B (en
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王云华
王凌晨
韦泽垠
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Shenzhen TCL New Technology Co Ltd
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Shenzhen TCL New Technology Co Ltd
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Abstract

The invention discloses a video program broadcasting method for a smart television. The video program broadcasting method comprises the following steps: video frames of a video program are stored in a first cache region according to a broadcasting time sequence; a preset video frame of the video program is acquired and used as a reference video frame, the reference video frame is divided into n blocks, and the n blocks are stored in a second cache region; video frames after the reference video frame are acquired in sequence and compared with all the blocks in a black-and-white pixel difference comparison mode, and then the number of the video frame corresponding to a body starting position of the video program is obtained through the comparison and stored in a third cache region; according to the number of the video frame stored in the third cache region, video frames of a body part of the video program are directly read from the first cache region into a display cache region, and the body part of the video program is displayed. The invention further discloses a video program broadcasting device for the smart television. According to the video program broadcasting method and device for the smart television, titles of a program can be skipped automatically, the time for a user to wait for the body part is saved, and better user experience is brought to the user.

Description

Video program play method and the device of intelligent television
Technical field
The present invention relates to intelligent television technical field, relate in particular to a kind of video program play method and device of intelligent television.
Background technology
Along with the development of TV tech, there is the intelligent television that comprises that the several functions such as TV reception, live broadcast stream media, access the Internet are integrated.The seamless link of intelligent television and internet, makes user utilize TV just can realize internet hunt, watches Online Video, watches competitive sports online, delivers microblogging, the multiple application such as browse web sites.
User is when using intelligent television to watch TV series by network, and because each collection substantially has machine-made head, and many times, these head user also wants to watch and do not need, and this can waste a large amount of time of user undoubtedly.On the other hand, when user need to skip head, all obtain each time remote controller and carry out F.F., greatly reduced user's experience.
Summary of the invention
Main purpose of the present invention is to provide a kind of video program play method of intelligent television, is intended to reduce the stand-by period of user in video program play process, improves user and experiences.
In order to achieve the above object, the present invention proposes a kind of video program play method of intelligent television, comprises the following steps:
Steps A, reception need the video frequency program of playing, and the frame of video of described video frequency program are deposited in to the first buffer area by reproduction time order;
Step B, from the predetermined frame of video obtaining described video frequency program in described the first buffer area as with reference to frame of video, described the predetermined frame of video is positioned at the leader of described video frequency program, described reference video frame is divided into n block and deposits in the second buffer area, and wherein n is natural number and n >=2;
Step C, in described the first buffer area, obtain and described video frequency program, be positioned at the frame of video after described reference video frame and each block of obtained frame of video and described reference video frame is carried out to monochrome pixels diversity ratio respectively successively, according to monochrome pixels difference comparative result, obtain the frame number of frame of video corresponding to the positive starting position of described video frequency program, described frame number is deposited in to the 3rd buffer area;
Step D, according to stored frame number in described the 3rd buffer area, from described the first buffer area, directly from the positive starting position of described video frequency program, the frame of video of the positive part of described video frequency program is read display buffer district to the positive part of the described video frequency program that displays the play.
Preferably, described step C specifically comprises:
Step C1, in described the first buffer area, obtain next frame of video that is positioned at described reference video frame described video frequency program, and according to described pre-defined rule, the current frame of video of obtaining is divided into the n corresponding with a described reference video frame block, the n of the current frame of video of an obtaining block is carried out to monochrome pixels diversity ratio with the corresponding block of described reference video frame respectively, find out the current frame of video of obtaining with respect to the original block positional information of the block of described reference video frame monochrome pixels difference minimum, described original block positional information is deposited in to described the 3rd buffer area,
Step C2, continuation is from obtaining next frame of video of described video frequency program in described the first buffer area, and according to described pre-defined rule, the current frame of video of obtaining is divided into the n corresponding with a described reference video frame block, the n of the current frame of video of an obtaining block is carried out to monochrome pixels diversity ratio with the corresponding block of described reference video frame respectively, find out the current frame of video of obtaining with respect to the current block positional information of the block of described reference video frame monochrome pixels difference minimum, judge that whether described current block positional information is identical with described original block positional information, if identical, return to execution step C2, if not identical, perform step C3,
Step C3, judge the starting position of positive that the current frame of video of obtaining is described video frequency program part, and the frame number of the current frame of video of obtaining is deposited in to described the 3rd buffer area.
Preferably, the step that in described step B, described reference video frame is divided into n block and deposits in the second buffer area is specially:
Subregion N1 on during described reference video frame is divided into according to the display position on screen, center subregion N2, in lower subregion N3, part district N4 on the left side and part five rectangle blocks of district N5 on the right side and deposit in the second buffer area.
Preferably, the upper left corner of screen is defined as to the initial point [0,0] of XY coordinate system, along the horizontal direction to the right of screen, be defined as the X-axis positive direction of XY coordinate system, be defined as the Y-axis positive direction of XY coordinate system along the longitudinal downward direction of screen, the lateral dimension of screen is x, the longitudinal size of screen is y
In described reference video frame, the display position of upper subregion N1 on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0], [0.75x, 0], [0.25x, 0.25y], [0.75x, 0.25y];
The display position of the center subregion N2 of described reference video frame on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0.25y], [0.75x, 0.25y], [0.25x, 0.75y], [0.75x, 0.75y];
In described reference video frame, the display position of lower subregion N3 on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0.75y], [0.75x, 0.75y], [0.25x, y], [0.75x, y];
The display position of district N4 on screen that part on the left side of described reference video frame is: the rectangular area being surrounded by coordinate points [0,0], [0.25x, 0], [0, y], [0.25x, y];
In described reference video frame, parting the display position of district N5 on screen on the right side is: the rectangular area being surrounded by coordinate points [0.75x, 0], [x, 0], [0.75x, y], [x, 0.25y].
Preferably, in described step C1, the n of the current frame of video of an obtaining block being carried out to monochrome pixels diversity ratio step with the corresponding block of described reference video frame respectively specifically comprises:
The white pixel difference of each block with the corresponding block of described reference video frame of the current frame of video of obtaining is calculated in step C11, employing as shown in the formula (1);
W i=|NWp i-NWr i| （1）
In above formula (1), i is natural number and 1≤i≤n, W ithe absolute value that represents the difference of all white pixel in i the block corresponding with described reference video frame of all white pixel in described current i the block that obtains frame of video, NWp irepresent all white pixel summations in described current i the block that obtains frame of video; NWr irepresent all white pixel summations in i block of described reference video frame;
The black picture element difference of each block with the corresponding block of described reference video frame of the current frame of video of obtaining is calculated in step C12, employing as shown in the formula (2);
B i=|NBp i-NBr i| （2）
In above formula (2), i is natural number and 1≤i≤n, B ithe absolute value that represents the difference of all black picture elements in i block that in described current i the block that obtains frame of video, all black picture elements are corresponding with described reference video frame, NBp irepresent all black picture element summations in described current i the block that obtains frame of video; NBr irepresent all black picture element summations in i block of described reference video frame;
Step C13, employing are calculated each block of the current frame of video of obtaining and the black and white pixel value difference of the corresponding block of described reference video frame as shown in the formula (3);
BW i=B i+W i （3）
In above formula (3), i is natural number and 1≤i≤n, BW ithe black and white pixel value difference that represents i the block that current described current i the block that obtains frame of video is corresponding with described reference video frame.
The present invention also provides a kind of video program play device of intelligent television, comprises receiver module, memory module, image processing module and display module, wherein:
Described receiver module is for receiving the video frequency program that needs broadcasting;
Described memory module comprises the first buffer area, the second buffer area and the 3rd buffer area, and described the first buffer area is for depositing the frame of video of described video frequency program by reproduction time order;
Described image processing module, for the predetermined frame of video from obtaining described video frequency program in described the first buffer area as with reference to frame of video, described the predetermined frame of video is positioned at the leader of described video frequency program, and described reference video frame is divided into n block, wherein n is natural number and n >=2;
Described image processing module, also for obtain successively described video frequency program in described the first buffer area, be positioned at the frame of video after described reference video frame and obtained frame of video and described reference video frame are carried out to monochrome pixels diversity ratio, and the frame number that obtains frame of video corresponding to the positive starting position of described video frequency program according to monochrome pixels difference comparative result;
Described the second buffer area, n the block being divided into for depositing described reference video frame;
Described the 3rd buffer area, for depositing the frame number of frame of video corresponding to the positive starting position of described video frequency program;
Described display module, for according to the stored frame number of described the 3rd buffer area, reads the frame of video of the positive part of described video frequency program display buffer district from described the first buffer area, and the positive part of the described video frequency program that displays the play.
Preferably, described image processing module comprises block division unit, comparing unit and judging unit, wherein:
Described block division unit, for the predetermined frame of video from obtaining described video frequency program in described the first buffer area as with reference to frame of video, described reference video frame is divided into n block, and in described the first buffer area, obtain successively the frame of video being positioned at described video frequency program after described reference video frame, and according to described pre-defined rule, the frame of video of obtaining is divided into the n corresponding with a described reference video frame block;
Described comparing unit, for the n of the frame of video of an obtaining block is carried out to monochrome pixels diversity ratio with the corresponding block of described reference video frame respectively, find out the frame of video obtained with respect to the block positional information of the block of described reference video frame monochrome pixels difference minimum, and first frame of video after described reference video frame with respect to the block positional information of the block of described reference video frame monochrome pixels difference minimum as original block positional information; And using later each frame of video of first frame of video after described reference video frame with respect to the block positional information of the block of described reference video frame monochrome pixels difference minimum as current block positional information;
Described judging unit, whether identical with described original block positional information for judging described current block positional information, and when not identical, judge the starting position of positive that the current frame of video of obtaining is described video frequency program part;
Described the 3rd buffer area, also for depositing described the first block positional information, and the frame number of the corresponding frame of video in starting position of depositing the positive part of described video frequency program.
Preferably, described block division unit specifically for: subregion N1 on during described reference video frame is divided into according to the display position on screen, center subregion N2, in lower subregion N3, part district N4 on the left side and part five rectangle blocks of district N5 on the right side.
Preferably, by the initial point [0,0] of the upper left corner definition XY coordinate system of screen, along the horizontal direction to the right of screen, be defined as the X-axis positive direction of XY coordinate system, be defined as the Y-axis positive direction of XY coordinate system along the longitudinal downward direction of screen, the lateral dimension of screen is x, the longitudinal size of screen is y
In described reference video frame, the display position of upper subregion N1 on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0], [0.75x, 0], [0.25x, 0.25y], [0.75x, 0.25y];
The display position of the center subregion N2 of described reference video frame on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0.25y], [0.75x, 0.25y], [0.25x, 0.75y], [0.75x, 0.75y];
In described reference video frame, the display position of lower subregion N3 on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0.75y], [0.75x, 0.75y], [0.25x, y], [0.75x, y];
The display position of district N4 on screen that part on the left side of described reference video frame is: the rectangular area being surrounded by coordinate points [0,0], [0.25x, 0], [0, y], [0.25x, y];
In described reference video frame, parting the display position of district N5 on screen on the right side is: the rectangular area being surrounded by coordinate points [0.75x, 0], [x, 0], [0.75x, y], [x, 0.25y].
Preferably, described image processing module specifically for:
The white pixel difference of each block with the corresponding block of described reference video frame of the current frame of video of obtaining is calculated in employing as shown in the formula (1);
W i=|NWp i-NWr i| （1）
In above formula (1), i is natural number and 1≤i≤n, W ithe absolute value that represents the difference of all white pixel in i the block corresponding with described reference video frame of all white pixel in described current i the block that obtains frame of video, NWp irepresent all white pixel summations in described current i the block that obtains frame of video; NWr irepresent all white pixel summations in i block of described reference video frame;
The black picture element difference of each block with the corresponding block of described reference video frame of the current frame of video of obtaining is calculated in employing as shown in the formula (2);
B i=|NBp i-NBr i| （2）
In above formula (2), i is natural number and 1≤i≤n, B ithe absolute value that represents the difference of all black picture elements in i block that in described current i the block that obtains frame of video, all black picture elements are corresponding with described reference video frame, NBp irepresent all black picture element summations in described current i the block that obtains frame of video; NBr irepresent all black picture element summations in i block of described reference video frame;
Employing is calculated each block of the current frame of video of obtaining and the black and white pixel value difference of the corresponding block of described reference video frame as shown in the formula (3);
BW i=B i+W i （3）
In above formula (3), i is natural number and 1≤i≤n, BW ithe black and white pixel value difference that represents i the block that current described current i the block that obtains frame of video is corresponding with described reference video frame.
Video program play method and the device of intelligent television of the present invention, by monochrome pixels diversity ratio, detect the appearance position of head word and the situation of change of head word, thereby determine the starting position of the positive part of video frequency program, when user's watching video program, the display module of intelligent television can directly partly start to read the frame of video of video frequency program from the positive of video frequency program, thereby can realize the head of automatically skipping video frequency program, saved user for waiting for the time of positive waste, to user, bring better user to experience, more intelligent, and can save a large amount of unnecessary energy wastes.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of video program play method one embodiment of intelligent television of the present invention.
Fig. 2 is the refinement schematic flow sheet of step S30 in the video program play method of intelligent television shown in Fig. 1.
Fig. 3 is the refinement schematic flow sheet of step S31 in Fig. 2.
Fig. 4 is the structural representation of video program play device one embodiment of intelligent television of the present invention.
Fig. 5 is the structural representation of memory module in the video program play device of intelligent television shown in Fig. 4.
Fig. 6 is the structural representation of image processing module in the video program play device of intelligent television shown in Fig. 4.
In order to make the technical scheme of invention clearer, to understand, below in conjunction with accompanying drawing, be described in further detail.
Embodiment
Should be appreciated that embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
With reference to Fig. 1, it is the schematic flow sheet of video program play method one embodiment of intelligent television of the present invention.The video program play method of the intelligent television that the present embodiment provides, comprises the following steps:
Step S10, reception need the video frequency program of playing, and the frame of video of described video frequency program are deposited in to the first buffer area by reproduction time order;
Needing the video frequency program of playing is the collection of drama with head, can be from the Internet, family lan, all kinds of TV signal etc.When user watches video frequency program by intelligent television, while wanting to skip the head of video frequency program, can be by a button is set on the remote controller at intelligent television or intelligent television, by operating this button, make intelligent television carry out described video program play method, also can be the automatic detection by intelligent television, when the video frequency program that will play being detected, be while thering is the collection of drama of head, automatically perform described video program play method.
When carrying out described video program play method, when intelligent television receives the video frequency program that needs broadcasting, intelligent television system can create the first buffer area, and the frame of video of described video frequency program is deposited in to the first buffer area by reproduction time order, and the display buffer district that does not directly send to display module plays.
Step S20, from the predetermined frame of video obtaining described video frequency program in described the first buffer area as with reference to frame of video, described the predetermined frame of video is positioned at the leader of described video frequency program, described reference video frame is divided into n block and deposits in the second buffer area, and wherein n is natural number and n >=2;
The predetermined frame of video obtaining described video frequency program is as with reference to frame of video, wherein the predetermined frame of video can be first frame of video of video frequency program, can also be other frame of video after first frame of video in video frequency program, as long as guarantee that described the predetermined frame of video is positioned at the leader of described video frequency program.Likely also there is not head word in several the frame of video (being several the frame of video that leader starts most) that some collection of drama class video frequency program starts most, for for to make described reference video frame be arranged in the leader of described video frequency program and to guarantee that head word has appearred in reference video frame, to be suitable for more eurypalynous collection of drama class video frequency program, described the predetermined frame of video preferably adopts other frame of video after first frame of video in video frequency program, the 100th video note for example selecting video frequency program is as with reference to frame of video, the 100th video of video frequency program conventionally belongs to leader and occurred head word, or the frame of video of playing in selection video frequency program the 30th second is as with reference to frame of video, the head of collection of drama class video frequency program are greater than 2 minutes conventionally, in the frame of video that the 30th second plays, conventionally belong to leader and occurred head word, choosing of reference video frames is not limited to given example, can also select for other, specifically can determine according to the duration of the frame rate of video frequency program and leader.
Described reference video frame is divided into n block and deposits in the second buffer area, its objective is the region for head word is occurred and do not have the region of head word to make a distinction.
Step 30, in described the first buffer area, obtain and described video frequency program, be positioned at the frame of video after described reference video frame and each block of obtained frame of video and described reference video frame is carried out to monochrome pixels diversity ratio respectively successively, according to monochrome pixels difference comparative result, obtain the frame number of frame of video corresponding to the positive starting position of described video frequency program, described frame number is deposited in to the 3rd buffer area;
The head word of the leader of video frequency program is generally black (be R=0, G=0, B=0, red, green, blue three pixels are for the darkest) or white (be R=255, G=255, B=255, red, green, blue three pixels are for the brightest) being current pixel.By obtaining successively the frame of video after described reference video frame and each block of obtained frame of video and described reference video frame being carried out to monochrome pixels diversity ratio respectively, according to monochrome pixels difference comparative result, can find out the block position at head word place, and can judge whether head word disappears, when finding head word message, illustrate that leader finishes, thereby obtain the frame number of frame of video corresponding to the positive starting position of described video frequency program.
Step S40, according to stored frame number in described the 3rd buffer area, from described the first buffer area, directly from the positive starting position of described video frequency program, the frame of video of the positive part of described video frequency program is read display buffer district to the positive part of the described video frequency program that displays the play.
The display module of intelligent television can detect the frame number of whether depositing frame of video in described the 3rd buffer area in real time, once the frame number of frame of video be detected, can be according to stored frame number in described the 3rd buffer area, from described the first buffer area, directly from the positive starting position of described video frequency program, the frame of video of the positive part of described video frequency program is read display buffer district, the positive part of described video frequency program that displays the play, thus skip the head of video frequency program.
The video program play method of above-mentioned intelligent television, by monochrome pixels diversity ratio, detect the appearance position of head word and the situation of change of head word, thereby determine the starting position of the positive part of video frequency program, when user's watching video program, the display module of intelligent television can directly partly start to read the frame of video of video frequency program from the positive of video frequency program, thereby can realize the head of automatically skipping video frequency program, saved user for waiting for the time of positive waste, to user, bring better user to experience, more intelligent, and can save a large amount of unnecessary energy wastes.
While detecting the appearance position of head word and the situation of change of head word by monochrome pixels diversity ratio, by carrying out monochrome pixels diversity ratio by starting most to choose each block of that frame of video with each block of a frame of video thereafter, can confirm the block at head word place, by each block that starts most to choose that frame of video being continued to carry out monochrome pixels diversity ratio one by one with each block of frame of video afterwards, the situation of change of head word can be detected, thereby obtain the positive starting position of video frequency program, also can be by successively each block of each block of last frame of video and a rear frame of video being carried out to monochrome pixels diversity ratio, the situation of change of head word detected, thereby obtain the positive starting position of video frequency program.
With reference to Fig. 2, Fig. 2 is the refinement schematic flow sheet of step S30 in the video program play method of intelligent television shown in Fig. 1.In the present embodiment, described step S30 specifically comprises:
Step S31, in described the first buffer area, obtain next frame of video that is positioned at described reference video frame described video frequency program, and according to described pre-defined rule, the current frame of video of obtaining is divided into the n corresponding with a described reference video frame block, the n of the current frame of video of an obtaining block is carried out to monochrome pixels diversity ratio with the corresponding block of described reference video frame respectively, find out the current frame of video of obtaining with respect to the original block positional information of the block of described reference video frame monochrome pixels difference minimum, described original block positional information is deposited in to described the 3rd buffer area,
Step S32, continuation is from obtaining next frame of video of described video frequency program in described the first buffer area, and according to described pre-defined rule, the current frame of video of obtaining is divided into the n corresponding with a described reference video frame block, the n of the current frame of video of an obtaining block is carried out to monochrome pixels diversity ratio with the corresponding block of described reference video frame respectively, find out the current frame of video of obtaining with respect to the current block positional information of the block of described reference video frame monochrome pixels difference minimum, judge that whether described current block positional information is identical with described original block positional information, if identical, return to execution step S32, if not identical, perform step S33,
Step S33, judge the starting position of positive that the current frame of video of obtaining is described video frequency program part, and the frame number of the current frame of video of obtaining is deposited in to described the 3rd buffer area.
By selecting reference video frame to carry out monochrome pixels diversity ratio one by one with follow-up frame of video, can reduce the error of comparative result, thereby obtain more accurately the positive starting position of video frequency program.
Judge when whether described current block positional information is identical with described original block positional information, if identical, the head word that video frequency program is described is still present in current video frame, and current frame of video is still leader, needs to continue next frame of video of judgement; If it is not identical, the head word that video frequency program is described has been to disappear in current video frame, current frame of video has entered into positive part, without continuing next frame of video of judgement, judge the starting position of the positive part that the current frame of video of obtaining is described video frequency program, and the frame number of the current frame of video of obtaining is deposited in to described the 3rd buffer area.
When reference video frame being carried out to block division, what mainly consider is common the occurred position of head word in video frequency program.In the present embodiment, the step that in described step S20, described reference video frame is divided into n block and deposits in the second buffer area is specially:
Subregion N1 on during described reference video frame is divided into according to the display position on screen, center subregion N2, in lower subregion N3, part district N4 on the left side and part five rectangle blocks of district N5 on the right side and deposit in the second buffer area.
Particularly, the present embodiment is defined as the upper left corner of screen the initial point [0 of XY coordinate system, 0], along the horizontal direction to the right of screen, be defined as the X-axis positive direction of XY coordinate system, along the longitudinal downward direction of screen, be defined as the Y-axis positive direction of XY coordinate system, the lateral dimension of screen is x, and the longitudinal size of screen is y
In described reference video frame, the display position of upper subregion N1 on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0], [0.75x, 0], [0.25x, 0.25y], [0.75x, 0.25y];
The display position of the center subregion N2 of described reference video frame on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0.25y], [0.75x, 0.25y], [0.25x, 0.75y], [0.75x, 0.75y];
In described reference video frame, the display position of lower subregion N3 on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0.75y], [0.75x, 0.75y], [0.25x, y], [0.75x, y];
The display position of district N4 on screen that part on the left side of described reference video frame is: the rectangular area being surrounded by coordinate points [0,0], [0.25x, 0], [0, y], [0.25x, y];
In described reference video frame, parting the display position of district N5 on screen on the right side is: the rectangular area being surrounded by coordinate points [0.75x, 0], [x, 0], [0.75x, y], [x, 0.25y].
With reference to Fig. 3, in the present embodiment, in described step S31, the n of the current frame of video of an obtaining block is carried out to monochrome pixels diversity ratio step with the corresponding block of described reference video frame respectively and specifically comprises:
The white pixel difference of each block with the corresponding block of described reference video frame of the current frame of video of obtaining is calculated in step S311, employing as shown in the formula (1);
W i=|NWp i-NWr i| （1）
In above formula (1), i is natural number and 1≤i≤n, W ithe absolute value that represents the difference of all white pixel in i the block corresponding with described reference video frame of all white pixel in described current i the block that obtains frame of video, NWp irepresent all white pixel summations in described current i the block that obtains frame of video; NWr irepresent all white pixel summations in i block of described reference video frame;
For the summation of how to add up white pixel in frame of video, this has been the known prior art of image processing techniques personnel, does not repeat them here.
The black picture element difference of each block with the corresponding block of described reference video frame of the current frame of video of obtaining is calculated in step S312, employing as shown in the formula (2);
B i=|NBp i-NBr i| （2）
In above formula (2), i is natural number and 1≤i≤n, B ithe absolute value that represents the difference of all black picture elements in i block that in described current i the block that obtains frame of video, all black picture elements are corresponding with described reference video frame, NBp irepresent all black picture element summations in described current i the block that obtains frame of video; NBr irepresent all black picture element summations in i block of described reference video frame;
For the summation of how to add up black picture element in frame of video, this has been the known prior art of image processing techniques personnel, does not repeat them here.
Step S313, employing are calculated each block of the current frame of video of obtaining and the black and white pixel value difference of the corresponding block of described reference video frame as shown in the formula (3);
BW i=B i+W i （3）
In above formula (3), i is natural number and 1≤i≤n, BW ithe black and white pixel value difference that represents i the block that current described current i the block that obtains frame of video is corresponding with described reference video frame.
Take that above-mentioned frame of video is divided into five subregions (being n=5) is example, suppose:
In the current frame of video of obtaining (first frame of video after reference video frame), in upper subregion N1, center subregion N2, in lower subregion N3, part district N4 on the left side, part the white pixel summation NWp of district N5 on the right side 1, NWp 2, NWp 3, NWp 4, NWp 5be respectively 100,100,90,100,140, its black picture element summation NBp 1, NBp 2, NBp 3, NBp 4, NBp 5be respectively 1000,100,290,10,40;
In reference video frame, in upper subregion N1, center subregion N2, in lower subregion N3, part district N4 on the left side, part the white pixel summation NWr of district N5 on the right side 1, NWr 2, NWr 3, NWr 4, NWr 5be respectively 120,55,60,5,135, its black picture element summation NBr 1, NBr 2, NBr 3, NBr 4, NBr 5be respectively 1200,5,60,5,39.
According to above-mentioned formula (1), calculate, can obtain current obtain frame of video in upper subregion N1, center subregion N2, in lower subregion N3, part district N4 on the left side, part the absolute value W of the difference of all white pixel in the block corresponding with described reference video frame of all white pixel in district N5 on the right side 1, W 2, W 3, W 4, W 5be respectively 20,45,30,95,5.
According to above-mentioned formula (2), calculate, can obtain current obtain frame of video in upper subregion N1, center subregion N2, in lower subregion N3, part district N4 on the left side, part the absolute value B of the difference of all white pixel in the block corresponding with described reference video frame of all white pixel in district N5 on the right side 1, B 2, B 3, B 4, B 5be respectively 200,95,230,5,1.
According to above-mentioned (3), calculate again, can obtain current described current obtain frame of video in upper subregion N1, center subregion N2, in lower subregion N3, part district N4 on the left side, part in district N5 the black and white pixel value difference BW with the corresponding block of described reference video frame on the right side 1, BW 2, BW 3, BW 4, BW 5difference 220,140,260,100,6.
By sorting from small to large, can obtain minimum black and white pixel value difference BW 5be 6, its corresponding subregion is original block positional information for parting district N5(on the right side), be the subregion of head word appearance.
For each frame of video after first frame of video after reference video frame, according to aforesaid method, can obtain the minimum minimum corresponding subregion of black and white pixel value difference (being current block positional information), by current block positional information and original block positional information are compared, if identical, illustrate that head word does not disappear, current video frame is still leader, need to continue next frame of video of judgement, if it is not identical, illustrate that head word disappears, current video frame has been positive part, the frame number of the current frame of video of obtaining is deposited in to described the 3rd buffer area.
With reference to Fig. 4, the structural representation of video program play device one embodiment that Fig. 4 is intelligent television of the present invention.The video program play device of the intelligent television that the present embodiment provides, comprises receiver module 11, memory module 12, image processing module 13 and display module 14, wherein:
Described receiver module 11 is for receiving the video frequency program that needs broadcasting;
Needing the video frequency program of playing is the collection of drama with head, can be from the Internet, family lan, all kinds of TV signal etc.When user watches video frequency program by intelligent television, while wanting to skip the head of video frequency program, can be by a button is set on the remote controller at intelligent television or intelligent television, by operating this button, make intelligent television open described video program play device, also can be the automatic detection by intelligent television, when the video frequency program that will play being detected, be while thering is the collection of drama of head, automatically open described video program play device.
With reference to Fig. 5, Fig. 5 is the structural representation of memory module 12 in the video program play device of intelligent television shown in Fig. 4.Described memory module 12 comprises the first buffer area 121, the second buffer area 122 and the 3rd buffer area 123, and described the first buffer area 121 is for depositing the frame of video of described video frequency program by reproduction time order;
Described image processing module 13, for the predetermined frame of video from obtaining described video frequency program in described the first buffer area as with reference to frame of video, described the predetermined frame of video is positioned at the leader of described video frequency program, and described reference video frame is divided into n block, wherein n is natural number and n >=2;
The predetermined frame of video obtaining described video frequency program is as with reference to frame of video, wherein the predetermined frame of video can be first frame of video of video frequency program, can also be other frame of video after first frame of video in video frequency program, as long as guarantee that described the predetermined frame of video is positioned at the leader of described video frequency program.Likely also there is not head word in several the frame of video (being several the frame of video that leader starts most) that some collection of drama class video frequency program starts most, for for to make described reference video frame be arranged in the leader of described video frequency program and to guarantee that head word has appearred in reference video frame, to be suitable for more eurypalynous collection of drama class video frequency program, described the predetermined frame of video preferably adopts other frame of video after first frame of video in video frequency program, the 100th video note for example selecting video frequency program is as with reference to frame of video, the 100th video of video frequency program conventionally belongs to leader and occurred head word, or the frame of video of playing in selection video frequency program the 30th second is as with reference to frame of video, the head of collection of drama class video frequency program are greater than 2 minutes conventionally, in the frame of video that the 30th second plays, conventionally belong to leader and occurred head word, choosing of reference video frames is not limited to given example, can also select for other, specifically can determine according to the duration of the frame rate of video frequency program and leader.
Described reference video frame is divided into n block and deposits in the second buffer area, its objective is the region for head word is occurred and do not have the region of head word to make a distinction.
Described image processing module 13, also for obtain successively described video frequency program in described the first buffer memory 121st district, be positioned at the frame of video after described reference video frame and obtained frame of video and described reference video frame are carried out to monochrome pixels diversity ratio, and the frame number that obtains frame of video corresponding to the positive starting position of described video frequency program according to monochrome pixels difference comparative result;
The head word of the leader of video frequency program is generally black (be R=0, G=0, B=0, red, green, blue three pixels are for the darkest) or white (be R=255, G=255, B=255, red, green, blue three pixels are for the brightest) being current pixel.By obtaining successively the frame of video after described reference video frame and each block of obtained frame of video and described reference video frame being carried out to monochrome pixels diversity ratio respectively, according to monochrome pixels difference comparative result, can find out the block position at head word place, and can judge whether head word disappears, when finding head word message, illustrate that leader finishes, thereby obtain the frame number of frame of video corresponding to the positive starting position of described video frequency program.
Described the second buffer area 122, n the block being divided into for depositing described reference video frame;
Described the 3rd buffer area 123, for depositing the frame number of frame of video corresponding to the positive starting position of described video frequency program;
Described display module 14, be used for according to the stored frame number of described the 3rd buffer area 123, from described the first buffer area 121, the frame of video of the positive part of described video frequency program is read display buffer district, and the positive part of the described video frequency program that displays the play.
The display module 14 of intelligent television can detect the frame number of whether depositing frame of video in described the 3rd buffer area 123 in real time, once the frame number of frame of video be detected, can be according to stored frame number in described the 3rd buffer area 123, from described the first buffer area 121, directly from the positive starting position of described video frequency program, the frame of video of the positive part of described video frequency program is read display buffer district, the positive part of described video frequency program that displays the play, thus skip the head of video frequency program.
The video program play device of above-mentioned intelligent television, by image processing module is set, carries out monochrome pixels diversity ratio and detect the appearance position of head word and the situation of change of head word, thereby determine the starting position of the positive part of video frequency program, when user's watching video program, the display module of intelligent television can directly partly start to read the frame of video of video frequency program from the positive of video frequency program, thereby can realize the head of automatically skipping video frequency program, saved user for waiting for the time of positive waste, to user, bring better user to experience, more intelligent, and can save a large amount of unnecessary energy wastes.
While detecting the appearance position of head word and the situation of change of head word by monochrome pixels diversity ratio, by carrying out monochrome pixels diversity ratio by starting most to choose each block of that frame of video with each block of a frame of video thereafter, can confirm the block at head word place, by each block that starts most to choose that frame of video being continued to carry out monochrome pixels diversity ratio one by one with each block of frame of video afterwards, the situation of change of head word can be detected, thereby obtain the positive starting position of video frequency program, also can be by successively each block of each block of last frame of video and a rear frame of video being carried out to monochrome pixels diversity ratio, the situation of change of head word detected, thereby obtain the positive starting position of video frequency program.
With reference to Fig. 6, Fig. 6 is the structural representation of image processing module 13 in the video program play device of intelligent television shown in Fig. 4.In the present embodiment, described image processing module 13 comprises block division unit 131, comparing unit 132 and judging unit 133, wherein:
Described block division unit 131, for the predetermined frame of video from obtaining described video frequency program in described the first buffer area 121 as with reference to frame of video, described reference video frame is divided into n block, and in described the first buffer area 121, obtain successively the frame of video being positioned at described video frequency program after reference video frame, and according to described pre-defined rule, the frame of video of obtaining is divided into the n corresponding with a described reference video frame block;
By selecting reference video frame to carry out monochrome pixels diversity ratio one by one with follow-up frame of video, can reduce the error of comparative result, thereby obtain more accurately the positive starting position of video frequency program.
Described comparing unit 132, for the n of the frame of video of an obtaining block is carried out to monochrome pixels diversity ratio with the corresponding block of described reference video frame respectively, find out the frame of video obtained with respect to the block positional information of the block of described reference video frame monochrome pixels difference minimum, and first frame of video after described reference video frame with respect to the block positional information of the block of described reference video frame monochrome pixels difference minimum as original block positional information; And using later each frame of video of first frame of video after described reference video frame with respect to the block positional information of the block of described reference video frame monochrome pixels difference minimum as current block positional information;
Described judging unit 133, whether identical with described original block positional information for judging described current block positional information, and when not identical, judge the starting position of positive that the current frame of video of obtaining is described video frequency program part;
Described the 3rd buffer area 123, also for depositing described the first block positional information, and the frame number of the corresponding frame of video in starting position of depositing the positive part of described video frequency program.
When reference video frame being carried out to block division, what mainly consider is common the occurred position of head word in video frequency program.In the present embodiment, described block division unit 131 specifically for: subregion N1 on during described reference video frame is divided into according to the display position on screen, center subregion N2, in lower subregion N3, part district N4 on the left side and part five rectangle blocks of district N5 on the right side.
Particularly, the present embodiment is by the initial point [0 of the upper left corner definition XY coordinate system of screen, 0], along the horizontal direction to the right of screen, be defined as the X-axis positive direction of XY coordinate system, along the longitudinal downward direction of screen, be defined as the Y-axis positive direction of XY coordinate system, the lateral dimension of screen is x, and the longitudinal size of screen is y
In described reference video frame, the display position of upper subregion N1 on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0], [0.75x, 0], [0.25x, 0.25y], [0.75x, 0.25y];
The display position of the center subregion N2 of described reference video frame on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0.25y], [0.75x, 0.25y], [0.25x, 0.75y], [0.75x, 0.75y];
In described reference video frame, the display position of lower subregion N3 on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0.75y], [0.75x, 0.75y], [0.25x, y], [0.75x, y];
The display position of district N4 on screen that part on the left side of described reference video frame is: the rectangular area being surrounded by coordinate points [0,0], [0.25x, 0], [0, y], [0.25x, y];
In described reference video frame, parting the display position of district N5 on screen on the right side is: the rectangular area being surrounded by coordinate points [0.75x, 0], [x, 0], [0.75x, y], [x, 0.25y].
In the present embodiment, described image processing module 13 specifically for:
The white pixel difference of each block with the corresponding block of described reference video frame of the current frame of video of obtaining is calculated in employing as shown in the formula (1);
W i=|NWp i-NWr i| （4）
In above formula (4), i is natural number and 1≤i≤n, W ithe absolute value that represents the difference of all white pixel in i the block corresponding with described reference video frame of all white pixel in described current i the block that obtains frame of video, NWp irepresent all white pixel summations in described current i the block that obtains frame of video; NWr irepresent all white pixel summations in i block of described reference video frame;
For the summation of how to add up white pixel in frame of video, this has been the known prior art of image processing techniques personnel, does not repeat them here.
The black picture element difference of each block with the corresponding block of described reference video frame of the current frame of video of obtaining is calculated in employing as shown in the formula (5);
B i=|NBp i-NBr i| （5）
In above formula (5), i is natural number and 1≤i≤n, B ithe absolute value that represents the difference of all black picture elements in i block that in described current i the block that obtains frame of video, all black picture elements are corresponding with described reference video frame, NBp irepresent all black picture element summations in described current i the block that obtains frame of video; NBri represents all black picture element summations in i block of described reference video frame;
For the summation of how to add up black picture element in frame of video, this has been the known prior art of image processing techniques personnel, does not repeat them here.
Employing is calculated each block of the current frame of video of obtaining and the black and white pixel value difference of the corresponding block of described reference video frame as shown in the formula (6);
BW i=B i+W i （6）
In above formula (6), i is natural number and 1≤i≤n, BW ithe black and white pixel value difference that represents i the block that current described current i the block that obtains frame of video is corresponding with described reference video frame.
Take that above-mentioned frame of video is divided into five subregions (being n=5) is example, suppose:
In the current frame of video of obtaining (first frame of video after reference video frame), in upper subregion N1, center subregion N2, in lower subregion N3, part district N4 on the left side, part white pixel summation NWpx, the NWp of district N5 on the right side 2, NWp 3, NWp 4, NWp 5be respectively 100,100,90,100,140, its black picture element summation NBp 1, NBp 2, NBp 3, NBp 4, NBp 5be respectively 1000,100,290,10,40;
In reference video frame, in upper subregion N1, center subregion N2, in lower subregion N3, part district N4 on the left side, part the white pixel summation NWr of district N5 on the right side 1, NWr 2, NWr 3, NWr 4, NWr 5be respectively 120,55,60,5,135, its black picture element summation NBr 1, NBr 2, NBr 3, NBr 4, NBr 5be respectively 1200,5,60,5,39.
According to above-mentioned formula (4), calculate, can obtain current obtain frame of video in upper subregion N1, center subregion N2, in lower subregion N3, part district N4 on the left side, part the absolute value W of the difference of all white pixel in the block corresponding with described reference video frame of all white pixel in district N5 on the right side 1, W 2, W 3, W 4, W 5be respectively 20,45,30,95,5.
According to above-mentioned formula (5), calculate, can obtain current obtain frame of video in upper subregion N1, center subregion N2, in lower subregion N3, part district N4 on the left side, part the absolute value B of the difference of all white pixel in the block corresponding with described reference video frame of all white pixel in district N5 on the right side 1, B 2, B 3, B 4, B 5be respectively 200,95,230,5,1.
According to above-mentioned (6), calculate again, can obtain current described current obtain frame of video in upper subregion N1, center subregion N2, in lower subregion N3, part district N4 on the left side, part in district N5 the black and white pixel value difference BW with the corresponding block of described reference video frame on the right side 1, BW 2, BW 3, BW 4, BW 5difference 220,140,260,100,6.
By sorting from small to large, can obtain minimum black and white pixel value difference BW 5be 6, its corresponding subregion is original block positional information for parting district N5(on the right side), be the subregion of head word appearance.
For each frame of video after first frame of video after reference video frame, according to aforesaid method, can obtain the minimum minimum corresponding subregion of black and white pixel value difference (being current block positional information), by current block positional information and original block positional information are compared, if identical, illustrate that head word does not disappear, current video frame is still leader, need to continue next frame of video of judgement, if it is not identical, illustrate that head word disappears, current video frame has been positive part, the frame number of the current frame of video of obtaining is deposited in to described the 3rd buffer area.
The foregoing is only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.

Claims (10)

1. a video program play method for intelligent television, is characterized in that, comprises the following steps:
Steps A, reception need the video frequency program of playing, and the frame of video of described video frequency program are deposited in to the first buffer area by reproduction time order;
Step B, from the predetermined frame of video obtaining described video frequency program in described the first buffer area as with reference to frame of video, described the predetermined frame of video is positioned at the leader of described video frequency program, described reference video frame is divided into n block and deposits in the second buffer area, and wherein n is natural number and n >=2;
Step C, in described the first buffer area, obtain and described video frequency program, be positioned at the frame of video after described reference video frame and each block of obtained frame of video and described reference video frame is carried out to monochrome pixels diversity ratio respectively successively, according to monochrome pixels difference comparative result, obtain the frame number of frame of video corresponding to the positive starting position of described video frequency program, described frame number is deposited in to the 3rd buffer area;
Step D, according to stored frame number in described the 3rd buffer area, from described the first buffer area, directly from the positive starting position of described video frequency program, the frame of video of the positive part of described video frequency program is read display buffer district to the positive part of the described video frequency program that displays the play.
2. the video program play method of intelligent television as claimed in claim 1, is characterized in that, described step C specifically comprises:
Step C1, in described the first buffer area, obtain next frame of video that is positioned at described reference video frame described video frequency program, and according to described pre-defined rule, the current frame of video of obtaining is divided into the n corresponding with a described reference video frame block, the n of the current frame of video of an obtaining block is carried out to monochrome pixels diversity ratio with the corresponding block of described reference video frame respectively, find out the current frame of video of obtaining with respect to the original block positional information of the block of described reference video frame monochrome pixels difference minimum, described original block positional information is deposited in to described the 3rd buffer area,
Step C2, continuation is from obtaining next frame of video of described video frequency program in described the first buffer area, and according to described pre-defined rule, the current frame of video of obtaining is divided into the n corresponding with a described reference video frame block, the n of the current frame of video of an obtaining block is carried out to monochrome pixels diversity ratio with the corresponding block of described reference video frame respectively, find out the current frame of video of obtaining with respect to the current block positional information of the block of described reference video frame monochrome pixels difference minimum, judge that whether described current block positional information is identical with described original block positional information, if identical, return to execution step C2, if not identical, perform step C3,
Step C3, judge the starting position of positive that the current frame of video of obtaining is described video frequency program part, and the frame number of the current frame of video of obtaining is deposited in to described the 3rd buffer area.
3. the video program play method of intelligent television as claimed in claim 2, is characterized in that, the step that in described step B, described reference video frame is divided into n block and deposits in the second buffer area is specially:
Subregion N1 on during described reference video frame is divided into according to the display position on screen, center subregion N2, in lower subregion N3, part district N4 on the left side and part five rectangle blocks of district N5 on the right side and deposit in the second buffer area.
4. the video program play method of intelligent television as claimed in claim 3, it is characterized in that, the upper left corner of screen is defined as to the initial point [0 of XY coordinate system, 0], along the horizontal direction to the right of screen, be defined as the X-axis positive direction of XY coordinate system, be defined as the Y-axis positive direction of XY coordinate system along the longitudinal downward direction of screen, the lateral dimension of screen is x, the longitudinal size of screen is y
In described reference video frame, the display position of upper subregion N1 on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0], [0.75x, 0], [0.25x, 0.25y], [0.75x, 0.25y];
The display position of the center subregion N2 of described reference video frame on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0.25y], [0.75x, 0.25y], [0.25x, 0.75y], [0.75x, 0.75y];
In described reference video frame, the display position of lower subregion N3 on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0.75y], [0.75x, 0.75y], [0.25x, y], [0.75x, y];
The display position of district N4 on screen that part on the left side of described reference video frame is: the rectangular area being surrounded by coordinate points [0,0], [0.25x, 0], [0, y], [0.25x, y];
In described reference video frame, parting the display position of district N5 on screen on the right side is: the rectangular area being surrounded by coordinate points [0.75x, 0], [x, 0], [0.75x, y], [x, 0.25y].
5. the video program play method of the intelligent television as described in any one in claim 2 to 4, it is characterized in that, in described step C1, the n of the current frame of video of an obtaining block is carried out to monochrome pixels diversity ratio step with the corresponding block of described reference video frame respectively and specifically comprise:
The white pixel difference of each block with the corresponding block of described reference video frame of the current frame of video of obtaining is calculated in step C11, employing as shown in the formula (1);
W i=|NWp i-NWr i| （1）
In above formula (1), i is natural number and 1≤i≤n, W ithe absolute value that represents the difference of all white pixel in i the block corresponding with described reference video frame of all white pixel in described current i the block that obtains frame of video, NWp irepresent all white pixel summations in described current i the block that obtains frame of video; NWr irepresent all white pixel summations in i block of described reference video frame;
The black picture element difference of each block with the corresponding block of described reference video frame of the current frame of video of obtaining is calculated in step C12, employing as shown in the formula (2);
B i=|NBp i-NBr i| （2）
In above formula (2), i is natural number and 1≤i≤n, B ithe absolute value that represents the difference of all black picture elements in i block that in described current i the block that obtains frame of video, all black picture elements are corresponding with described reference video frame, NBp irepresent all black picture element summations in described current i the block that obtains frame of video; NBr irepresent all black picture element summations in i block of described reference video frame;
Step C13, employing are calculated each block of the current frame of video of obtaining and the black and white pixel value difference of the corresponding block of described reference video frame as shown in the formula (3);
BW i=B i+W i （3）
In above formula (3), i is natural number and 1≤i≤n, BW ithe black and white pixel value difference that represents i the block that current described current i the block that obtains frame of video is corresponding with described reference video frame.
6. a video program play device for intelligent television, is characterized in that, comprises receiver module, memory module, image processing module and display module, wherein:
Described receiver module is for receiving the video frequency program that needs broadcasting;
Described memory module comprises the first buffer area, the second buffer area and the 3rd buffer area, and described the first buffer area is for depositing the frame of video of described video frequency program by reproduction time order;
Described image processing module, for the predetermined frame of video from obtaining described video frequency program in described the first buffer area as with reference to frame of video, described the predetermined frame of video is positioned at the leader of described video frequency program, and described reference video frame is divided into n block, wherein n is natural number and n >=2;
Described image processing module, also for obtain successively described video frequency program in described the first buffer area, be positioned at the frame of video after described reference video frame and obtained frame of video and described reference video frame are carried out to monochrome pixels diversity ratio, and the frame number that obtains frame of video corresponding to the positive starting position of described video frequency program according to monochrome pixels difference comparative result;
Described the second buffer area, n the block being divided into for depositing described reference video frame;
Described the 3rd buffer area, for depositing the frame number of frame of video corresponding to the positive starting position of described video frequency program;
Described display module, for according to the stored frame number of described the 3rd buffer area, reads the frame of video of the positive part of described video frequency program display buffer district from described the first buffer area, and the positive part of the described video frequency program that displays the play.
7. the video program play device of intelligent television as claimed in claim 6, is characterized in that, described image processing module comprises block division unit, comparing unit and judging unit, wherein:
Described block division unit, for the predetermined frame of video from obtaining described video frequency program in described the first buffer area as with reference to frame of video, described reference video frame is divided into n block, and in described the first buffer area, obtain successively the frame of video being positioned at described video frequency program after described reference video frame, and according to described pre-defined rule, the frame of video of obtaining is divided into the n corresponding with a described reference video frame block;
Described comparing unit, for the n of the frame of video of an obtaining block is carried out to monochrome pixels diversity ratio with the corresponding block of described reference video frame respectively, find out the frame of video obtained with respect to the block positional information of the block of described reference video frame monochrome pixels difference minimum, and first frame of video after described reference video frame with respect to the block positional information of the block of described reference video frame monochrome pixels difference minimum as original block positional information; And using later each frame of video of first frame of video after described reference video frame with respect to the block positional information of the block of described reference video frame monochrome pixels difference minimum as current block positional information;
Described judging unit, whether identical with described original block positional information for judging described current block positional information, and when not identical, judge the starting position of positive that the current frame of video of obtaining is described video frequency program part;
Described the 3rd buffer area, also for depositing described the first block positional information, and the frame number of the corresponding frame of video in starting position of depositing the positive part of described video frequency program.
8. the video program play device of intelligent television as claimed in claim 7, it is characterized in that, described block division unit specifically for: subregion N1 on during described reference video frame is divided into according to the display position on screen, center subregion N2, in lower subregion N3, part district N4 on the left side and part five rectangle blocks of district N5 on the right side.
9. the video program play device of intelligent television as claimed in claim 8, it is characterized in that, by the initial point [0 of the upper left corner definition XY coordinate system of screen, 0], along the horizontal direction to the right of screen, be defined as the X-axis positive direction of XY coordinate system, be defined as the Y-axis positive direction of XY coordinate system along the longitudinal downward direction of screen, the lateral dimension of screen is x, the longitudinal size of screen is y
In described reference video frame, the display position of upper subregion N1 on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0], [0.75x, 0], [0.25x, 0.25y], [0.75x, 0.25y];
The display position of the center subregion N2 of described reference video frame on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0.25y], [0.75x, 0.25y], [0.25x, 0.75y], [0.75x, 0.75y];
In described reference video frame, the display position of lower subregion N3 on screen is: the rectangular area being surrounded by coordinate points [0.25x, 0.75y], [0.75x, 0.75y], [0.25x, y], [0.75x, y];
The display position of district N4 on screen that part on the left side of described reference video frame is: the rectangular area being surrounded by coordinate points [0,0], [0.25x, 0], [0, y], [0.25x, y];
In described reference video frame, parting the display position of district N5 on screen on the right side is: the rectangular area being surrounded by coordinate points [0.75x, 0], [x, 0], [0.75x, y], [x, 0.25y].
10. the video program play device of the intelligent television as described in any one in claim 7 to 9, is characterized in that, described image processing module specifically for:
The white pixel difference of each block with the corresponding block of described reference video frame of the current frame of video of obtaining is calculated in employing as shown in the formula (1);
W i=|NWp i-NWr i| （1）
In above formula (1), i is natural number and 1≤i≤n, W ithe absolute value that represents the difference of all white pixel in i the block corresponding with described reference video frame of all white pixel in described current i the block that obtains frame of video, NWp irepresent all white pixel summations in described current i the block that obtains frame of video; NWr irepresent all white pixel summations in i block of described reference video frame;
The black picture element difference of each block with the corresponding block of described reference video frame of the current frame of video of obtaining is calculated in employing as shown in the formula (2);
B i=|NBp i-NBr i| （2）
In above formula (2), i is natural number and 1≤i≤n, B ithe absolute value that represents the difference of all black picture elements in i block that in described current i the block that obtains frame of video, all black picture elements are corresponding with described reference video frame, NBp irepresent all black picture element summations in described current i the block that obtains frame of video; NBr irepresent all black picture element summations in i block of described reference video frame;
Employing is calculated each block of the current frame of video of obtaining and the black and white pixel value difference of the corresponding block of described reference video frame as shown in the formula (3);
BW i=B i+W i （3）
In above formula (3), i is natural number and 1≤i≤n, BW ithe black and white pixel value difference that represents i the block that current described current i the block that obtains frame of video is corresponding with described reference video frame.
CN201310749619.8A 2013-12-30 2013-12-30 The video program play method and device of intelligent television Expired - Fee Related CN103716676B (en)

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