CN102208171B - Local detail playing method on portable high-definition video player - Google Patents
Local detail playing method on portable high-definition video player Download PDFInfo
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Abstract
The invention discloses a local detail playing method on a portable high-definition video player. The method comprises the following steps of: (1) distributing two YUV areas, namely an area A and an area B in a system, wherein the area A is used as a storage area of the original image data, and the area B is used as a local image data storage area to be amplified; (2) selecting any rectangular area to be amplified in pictures on a screen in the video picture playing or pausing states; (3) calculating image data of the original rectangular area corresponding to the rectangular area to be amplified; and (4) setting a display controller according to calculation results acquired in the step (3), and overlapping images of the original rectangular area of the rectangular area to be amplified onthe upper side of the current screen picture for displaying. By the method, high-definition video can be played on a portable player, and finer and clearer high-definition video pictures can be enjoyed on the display screen of the portable player without any increase in hardware cost.
Description
Technical field
The present invention relates to the local detail playing method on a kind of portable high-definition video player.
Background technology
Along with the development of multimedia chip technology, portable player begins to have more and more stronger decoding ability to play.Some players have had the ability to directly decode the video of playing high definition resolution.Yet so how the video of high-resolution (greater than the resolution of 1280*720) is just watched at portable player and has been become a problem.Present implementation has two kinds of methods to watch video: a kind of method is that player is linked to each other with high definition (HD) TV by the video dedicated signal lines, and decoded vision signal outputs on the HDTV (High-Definition Television) by holding wire and shows; A kind of is high definition to be differentiated video image narrow down to the player screen resolution sizes, then directly shows in player screen.The screen resolution of portable player is smaller, and such as 480*272 or 800*480, and the video that present player can be decoded generally can both reach the level of SD (720*480) or high definition (1280*720).
First method in the existing solution, vision signal outputed on the HDTV (High-Definition Television) show, need at the newly-increased vision signal modulation module of portable player, increase hardware cost, can only use with the HDTV (High-Definition Television) collocation indoor simultaneously, lose portability.The second way must narrow down to image the player screen size, because the restriction of screen cost and player portability, in general portable player, workflow can be with reference to the accompanying drawings 1, player decodes video image, then image is narrowed down to screen size, export again, the screen resolution of player (such as 480*272) is much smaller than the resolution (1280*720) of HD video, through so significantly dwindling process, a lot of detailed information on the video image will be lost.In this case, the display effect seen of user will be the same with the video effect of common resolution sizes.The HD video content has also just lost its advantage: excellent careful video pictures.The user is in watching the process of video, and is probably interested in certain part details.But because image is significantly dwindled, screen display result out can't represent full details.
Summary of the invention
The object of the present invention is to provide the local detail playing method on a kind of portable high-definition video player, the method can realize playing HD video at portable player, and need to be by outside HDTV (High-Definition Television) equipment and corresponding video modulation output module, in the situation that do not increase hardware cost, just can enjoy more careful more clearly HD video picture at the display screen of portable player.
Purpose of the present invention can realize by following technical measures: the local detail playing method on a kind of portable high-definition video player is characterized in that may further comprise the steps:
(1), distributes two YUV zones in the system: regional A and regional B, described regional A is as the memory block of raw image data, zone B is as treating enlarged partial image data storage district, Video Decoder outputs to regional A with each frame raw image data, display controller is reduced into screen size with each the frame original image among the regional A, and is presented on the screen;
(2), video pictures play or halted state in select on the screen any rectangular area to be amplified in the picture;
(3), calculate the view data in corresponding original rectangular zone, rectangular area described to be amplified, system copies described original rectangular zone from described regional A view data is in regional B, and the display position of definite original rectangular zone on screen;
(4), according to the result of calculation of step (3) display controller is set, and with the view data in the original rectangular zone among the regional B show according to the described display position active screen top that is added to.
The view data in corresponding original rectangular zone, rectangular area described to be amplified comprises: the length and width in original rectangular zone, the upper left corner coordinate in original image.
As an embodiment of the present invention: definite process of rectangular area described to be amplified is: select any a starting point at screen, and with the central point of described starting point as rectangle, and determine rectangular area to be amplified according to required rectangle length and width value.
As another embodiment of the present invention: definite process of rectangular area described to be amplified is: select any two points at screen, and angle point is determined rectangular area to be amplified take described 2 as rectangle.
Definite process of the display position of image on screen in described original rectangular zone is: with the central point of rectangular area the to be amplified central point as described display position.
The image in described original rectangular zone in definite process of the display position on the screen is: the image in described original rectangular zone is presented on the corner of screen.The selection course of described corner is:
A), calculate the center point coordinate of rectangular area described to be amplified;
B), take the axis of the axis of screen level direction and vertical direction with screen divider as 4 zones: upper left district, lower-left district, upper right district and bottom right district;
C) if rectangular centre point to be amplified is positioned at upper left district, then the image in described original rectangular zone is presented at the lower right corner of screen; If rectangular centre to be amplified is positioned at the lower-left district, then the image in described original rectangular zone is presented at the upper right corner of screen; If rectangular centre to be amplified is positioned at upper right district, then the image in described original rectangular zone is presented at the lower left corner of screen; If rectangular centre to be amplified is positioned at the bottom right district, then the image in described original rectangular zone is presented at the upper left corner of screen.
The described mode of rectangular area of selecting at screen is for using touch-screen or mouse or touch pad to select.
The inventive method has following beneficial effect with respect to traditional portable video is play:
1, traditional video special signal bundle of lines HD video that passes through outputs to high definition (HD) TV, although details that can complete display video image needs external HDTV (High-Definition Television), can't accomplish portable.And the present invention can both can save HDTV (High-Definition Television) and vision signal modular converter at the full details of the small screen demonstration user area-of-interest, did not increase cost, can accomplish again portable;
2, compare to the method for screen size with dwindling video image, the full details of the parts of images of the present invention in can display frame has complemented because of picture and has dwindled the defective that causes loss in detail;
3, the present invention with touch-screen as the man-machine interaction means, simple to operate, easy left-hand seat.And the details picture is decoded raw frames, saves computational resource and system power dissipation, and fixedly multimedia equipment or moving multimedia equipment are all applicable.
Description of drawings
Fig. 1 is the schematic diagram of the playing flow of ordinary video player;
Fig. 2 is the schematic diagram of the playing flow of the inventive method video player of having added the local detail enlarged drawing;
Fig. 3 is a certain broadcasting pictures of common PMP result of broadcast;
Fig. 4 is system's process chart of the playing process of the local detail playing method on the inventive method portable high-definition video player;
Fig. 5 adopts the mode of choosing any point to select the flow chart of rectangular area to be amplified in the inventive method;
Fig. 6 adopts the mode of choosing any two points to select the flow chart of rectangular area to be amplified in the inventive method;
Fig. 7 adopts the inventive method to play picture shown in Figure 6, adopts simultaneously the magnifying glass display mode to show the design sketch for the treatment of magnification region;
Fig. 8 adopts the inventive method to play picture shown in Figure 6, adopts simultaneously the corner display mode to show the design sketch for the treatment of magnification region.
Embodiment
The invention provides a kind of by choosing a zone on the screen, the method for immediately checking the original image that this is regional at screen.In the portable video player system of an employing the inventive method, the output of Video Decoder is the yuv data of non-scaled, has distributed two YUV zones in the system: regional A and regional B.Zone A is as the memory block of entire image, and regional B is as the memory block of selected areas.The target of decoder output is regional A.If choose a zone on the screen, whenever decoder is exported frame data to regional A, system will copy area-of-interest to regional B from regional A.
The data of zone A and regional B will through the processing of display controller, then output on the LCD.Display controller will dwindle the image of regional A, narrows down to screen size.Then the image of regional B is added to above the regional A after dwindling.Export at last the LCD control signal, the effect that allows LCD viewing area A (image that dwindles) and B (topography that does not dwindle) superpose.The user can watch complete video image like this, also can watch simultaneously the details of certain part, and its playing process as shown in Figure 2.This method is supported in and shows topography's details, the idiographic flow of display routine under broadcast state or the halted state.
The flow chart of the local detail playing method on the portable high-definition video player of the present invention as shown in Figure 4 specifically may further comprise the steps:
(1), distributes two YUV zones in the system: regional A and regional B, zone A is as the memory block of raw image data, zone B is as treating enlarged partial image data storage district, Video Decoder outputs to regional A with each frame raw image data, display controller is reduced into screen size with each the frame original image among the regional A, and is presented on the screen;
(2), video pictures play or halted state in select on the screen any rectangular area to be amplified in the picture;
(3), calculate the view data in corresponding original rectangular zone, rectangular area to be amplified, system copies the original rectangular zone from regional A view data is in regional B, and the display position of definite original rectangular zone on screen;
(4), according to the result of calculation of step (3) display controller is set, and with the view data in the original rectangular zone among the regional B show according to the display position active screen top that is added to.The view data in corresponding original rectangular zone, rectangular area to be amplified comprises: the length and width in original rectangular zone, the upper left corner coordinate in original image.
Wherein, the selection course of rectangular area to be amplified comprises two kinds, and flow chart is distinguished as shown in Figure 5 and Figure 6:
The first is as shown in Figure 5: select any point at screen, and point and needed length and width are worth determined rectangle as rectangular area to be amplified centered by this point.Thereby the process in stack original rectangular zone is on the screen: the image top that the original image of selected rectangular area is presented at the current demonstration of screen centered by selected central point.Claim that this kind display mode is the magnifying glass display mode.Constantly obtain the pointer coordinate after moving in the flow chart, therefore minute front and back coordinate.Skew among the figure refers to the subtraction value of former and later two coordinates, for the length and width of calculating the original rectangular zone, at the upper left corner of original image coordinate.
The second is as shown in Figure 6: select any two points at screen, and take these 2 as to the determined rectangle of angle point as the rectangular area of selecting.Thereby the process of the raw image data of this rectangular area of stack is on the screen: the original image that this rectangle is corresponding is presented on the corner of screen.Claim that this kind display mode is the corner display mode.The selection course of corner is:
A), calculate the center point coordinate of rectangular area to be amplified;
B), take the axis of the axis of screen level direction and vertical direction with screen divider as 4 zones: upper left district, lower-left district, upper right district and bottom right district;
C) if rectangular centre point to be amplified is positioned at upper left district, then the image in original rectangular zone is presented at the lower right corner of screen; If rectangular centre to be amplified is positioned at the lower-left district, then the image in original rectangular zone is presented at the upper right corner of screen; If rectangular centre to be amplified is positioned at upper right district, then the image in original rectangular zone is presented at the lower left corner of screen; If rectangular centre to be amplified is positioned at the bottom right district, then the image in original rectangular zone is presented at the upper left corner of screen.
The use of can arranging in pairs or groups arbitrarily of the selection course of two kinds of above-mentioned rectangular areas to be amplified and definite process of display position.Select the mode of rectangular area to select for using touch-screen or mouse or touch pad at screen.The present invention preferably with touch-screen as first-selected man-machine interaction means, mouse or touch pad are as the second man-machine interaction means.Behind displaying video, can immediately click screen and carry out the details demonstration.
The present invention can be applicable to have fixedly multimedia equipment and the moving multimedia equipment of touch-screen or mouse or touch pad.Such as mobile phone, PMP, net book, panel computer, Vehicular media player etc.The below illustrates effect of the present invention with the concrete instance of a PMP.
Under the general case, watch the unavoidable meeting of high definition (HD) video to produce the situation of dwindling the loss in detail that causes because of image at portable player (PMP), as shown in Figure 3, be one with the PMP of 480x272 resolution touch-screen at the HD video of playing one section 720p (1280x720).Can see from this image, pass through picture and dwindled, it is very fuzzy that the literal on the car seems, naked eyes can not be identified.Adopt the inventive method can allow the user on the small in resolution screen of portable player (PMP), watch the local detail of more careful more clearly high definition resolution video, and be not only the picture material after dwindling.
Fig. 7 and Fig. 8 are the design sketch after this PMP adopts the inventive method.Wherein Fig. 6 is the effect of having used the corner to show, and the middle little frame of black is the zone that the needs chosen show details, and what show in the slightly large frame in the lower right corner then is the image in the original rectangular zone in this zone, rectangular area to be amplified.Fig. 7 is the effect of having used the magnifying glass pattern, and middle black box zone is the image in original rectangular zone.
Can find out from the contrast of Fig. 6, Fig. 7, Fig. 8, after showing through details, immediately and clearly identify the literal on the car.
In the methods of the invention, except can in video playback, using the method, be similar in the animation playing process of Flash and also can use this method, amplify the effect of playing to realize local detail.
In this method implementation procedure, as indicated earlier, usually global image data A and partial image data B are synthesized and output to LCD by lcd controller and show.Also can be before image be passed to lcd controller, with global image data A and the synthetic view data C of partial image data B, and then the view data C after will being synthesized by lcd controller exports to LCD and shows by software or graphics accelerator.
Claims (8)
1. the local detail playing method on the portable high-definition video player is characterized in that may further comprise the steps:
(1), distributes two YUV zones in the system: regional A and regional B, described regional A is as the memory block of raw image data, zone B is as treating enlarged partial image data storage district, Video Decoder outputs to regional A with each frame raw image data, display controller is reduced into screen size with each the frame original image among the regional A, and is presented on the screen;
(2), under video pictures broadcast or halted state, select any rectangular area to be amplified in the screen-picture;
(3), calculate the view data in corresponding original rectangular zone, rectangular area described to be amplified, system copies described original rectangular zone from described regional A view data is in regional B, and the display position of definite original rectangular zone on screen;
(4), according to the result of calculation of step (3) display controller is set, and with the view data in the original rectangular zone among the regional B show according to the described display position active screen top that is added to.
2. the local detail playing method on the portable high-definition video player according to claim 1, it is characterized in that: the view data in corresponding original rectangular zone, rectangular area described to be amplified comprises: the length and width in original rectangular zone and the upper left corner coordinate in original image.
3. the local detail playing method on the portable high-definition video player according to claim 1, it is characterized in that: definite process of rectangular area described to be amplified is: select any a starting point at screen, and with described starting point as the central point of rectangle, determine rectangular area to be amplified according to required rectangle length and width value.
4. the local detail playing method on the portable high-definition video player according to claim 1, it is characterized in that: definite process of rectangular area described to be amplified is: select any two points at screen, and angle point is determined rectangular area to be amplified take described 2 as rectangle.
5. according to claim 1 or the local detail playing method on the 3 described portable high-definition video players, it is characterized in that: definite process of the display position of image on screen in described original rectangular zone is: with the central point of rectangular area the to be amplified central point as described display position.
6. according to claim 1 or the local detail playing method on the 4 described portable high-definition video players, it is characterized in that: the image in described original rectangular zone in definite process of the display position on the screen is: the image in described original rectangular zone is presented on the corner of screen.
7. the local detail playing method on the portable high-definition video player according to claim 6, it is characterized in that: the selection course of described corner is:
A), calculate the center point coordinate of rectangular area described to be amplified;
B), take the axis of the axis of screen level direction and vertical direction with screen divider as 4 zones: upper left district, lower-left district, upper right district and bottom right district;
C) if the central point of rectangular area to be amplified is positioned at upper left district, then the image in described original rectangular zone is presented at the lower right corner of screen; If the central point of rectangular area to be amplified is positioned at the lower-left district, then the image in described original rectangular zone is presented at the upper right corner of screen; If the central point of rectangular area to be amplified is positioned at upper right district, then the image in described original rectangular zone is presented at the lower left corner of screen; If the central point of rectangular area to be amplified is positioned at the bottom right district, then the image in described original rectangular zone is presented at the upper left corner of screen.
8. the local detail playing method on the portable high-definition video player according to claim 1 is characterized in that: the described mode of rectangular area of selecting at screen is for using touch-screen or mouse or touch pad to select.
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| CN2010101412439A CN102208171B (en) | 2010-03-31 | 2010-03-31 | Local detail playing method on portable high-definition video player |
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| CN110362250B (en) * | 2018-04-09 | 2021-03-23 | 杭州海康威视数字技术股份有限公司 | Image local amplification method and device and display equipment |
| CN108924657B (en) * | 2018-06-13 | 2021-08-31 | 上海熙菱信息技术有限公司 | Method for superimposing flicker-free graphics on video frame |
| CN109121000A (en) * | 2018-08-27 | 2019-01-01 | 北京优酷科技有限公司 | A kind of method for processing video frequency and client |
| CN110941375B (en) * | 2019-11-26 | 2023-09-05 | 腾讯科技（深圳）有限公司 | Method, device and storage medium for locally amplifying image |
| CN112162683A (en) * | 2020-09-25 | 2021-01-01 | 珠海格力电器股份有限公司 | Image amplification method and device and storage medium |
| WO2022236808A1 (en) * | 2021-05-14 | 2022-11-17 | 京东方科技集团股份有限公司 | Display system and display device |
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