CN106851147B - The method and device in OSD menu region is determined in the terminal for playing external video - Google Patents
The method and device in OSD menu region is determined in the terminal for playing external video Download PDFInfo
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- CN106851147B CN106851147B CN201710081816.5A CN201710081816A CN106851147B CN 106851147 B CN106851147 B CN 106851147B CN 201710081816 A CN201710081816 A CN 201710081816A CN 106851147 B CN106851147 B CN 106851147B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
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Abstract
The invention discloses a kind of method and devices that OSD menu region is determined in the terminal for playing external video, belong to field of display technology.It include the pixel for meeting preset condition in the first pixel collection this method comprises: determining the first pixel collection from current frame image；From the first pixel collection, selection and the co-located pixel of OSD pixel obtain the second pixel collection, and OSD pixel is the pixel where with OSD menu region in multiple continuous images of current frame image；The OSD menu region in current frame image is determined based on the pixel in the second pixel collection.The present invention, which passes through, determines the first pixel collection and the second pixel collection, and OSD menu region is determined based on the second pixel collection, to can only be handled the region except OSD menu region when image procossing, and then OSD menu is avoided to be distorted, show that OSD menu normally.
Description
Technical field
It is the present invention relates to field of display technology, in particular to a kind of that OSD menu is determined in the terminal for playing external video
The method and device in region.
Background technique
With the fast development of display technology, terminal has more and more display functions, for example people can be by TV
It is connected with computer or set-top box, and passes through the video of video or viewing set-top box transmission in television-viewing computer.It is seeing
During seeing video, people can also pass through computer or OSD (On Screen Display, screen are shown) dish of set-top box
It sets up and sets the display properties such as brightness or contrast, and replacement channel etc., can show video and OSD on TV simultaneously at this time
Menu.
For ease of description, the terminal of the transmission video such as computer or set-top box is known as first terminal, TV etc. is used for
The terminal for playing video is known as second terminal.When second terminal needs show OSD menu while showing video, first eventually
OSD menu and video frame images can be overlapped by end, synthesize an image, OSD menu is located at the figure under normal circumstances
The middle region of picture, other regions are video frame images, and then the image of synthesis is sent to second terminal by first terminal, the
Two terminals receive and show the image of synthesis.
However, since the image that second terminal is shown is the image after OSD menu and video frame images synthesis, so working as
When second terminal carries out image quality processing to the image of synthesis, may the part to OSD menu also handle together, to make
It is distorted, can not normally show at OSD menu, therefore, a kind of method that can determine OSD menu region is needed, at image quality
The display area of OSD menu can be avoided when reason, and then avoids the distortion of OSD menu.
Summary of the invention
In order to solve problems in the prior art, it is true in the terminal for playing external video that the embodiment of the invention provides a kind of
Determine the method and device in OSD menu region.The technical solution is as follows:
On the one hand, a kind of method that OSD menu region is determined in the terminal for playing external video, the method are provided
Include:
From current frame image, the first pixel collection is determined, include meeting default item in first pixel collection
The pixel of part；
Wherein, the preset condition includes: that the edge size of pixel is more than or equal to the first default size and pixel
Brightness and previous frame image in same position pixel brightness between difference be less than predetermined luminance, the edge size is
Brightness step of the pixel in edge direction；
From first pixel collection, selection and the co-located pixel of OSD pixel obtain the second picture
Vegetarian refreshments set, the OSD pixel are the picture where OSD menu region in multiple continuous images before the current frame image
Vegetarian refreshments；
The OSD menu region in the current frame image is determined based on the pixel in second pixel collection.
Optionally, described from first pixel collection, selection and the co-located pixel of OSD pixel
Point obtains the second pixel collection, comprising:
Determine the neighborhood territory pixel point number of each pixel in first pixel collection, the neighborhood territory pixel point number
To be in the pixel number in pixel neighborhood of a point in first pixel collection, the size of the neighborhood is second default
Size；
From first pixel collection, neighborhood territory pixel point number is selected to be greater than or equal to the pixel of predetermined number,
Obtain third pixel collection；
From the third pixel collection, selection and the co-located pixel of OSD pixel obtain the second picture
Vegetarian refreshments set.
Optionally, the preset condition further includes at least one of following condition:
Same position in the edge direction of the pixel previous frame image adjacent with the current frame image in current frame image
Angle between the edge direction for the pixel set is less than default angle；
The brightness variance of pixel is greater than or equal to the first default variance in current frame image；
The brightness of the brightness variance of pixel and the pixel of same position in the previous frame image in current frame image
Difference between variance is less than the second default variance.
Optionally, the pixel based in second pixel collection determines the OSD in the current frame image
Menu area, comprising:
OSD pixel area encompassed in second pixel collection being determined as in the current frame image
Menu area.
Optionally, the pixel based in second pixel collection determines the OSD in the current frame image
Menu area, comprising:
From second pixel collection, determine that multiple boundary pixel points, the multiple boundary pixel point are respectively cross
Coordinate minimum or maximum and ordinate minimum or maximum pixel；
The rectangular area that the multiple boundary pixel point is surrounded is determined as to the OSD menu area in the current frame image
Domain.
Optionally, the pixel based in second pixel collection determines the OSD in the current frame image
Menu area, comprising:
From second pixel collection, multiple pixels are selected, the phase of each pixel in the multiple pixel
Adjacent pixel belongs to second pixel collection；
The multiple pixel area encompassed is determined as to the OSD menu region in the current frame image.
Optionally, the pixel based in second pixel collection determines the OSD in the current frame image
After menu area, further includes:
It is described to being removed in the current frame image when receiving the image processing commands for the current frame image
Region except OSD menu region carries out image procossing.
On the other hand, a kind of device that OSD menu region is determined in the terminal for playing external video, the dress are provided
It sets and includes:
First determining module, for determining the first pixel collection, first pixel collection from current frame image
In include meeting the pixel of preset condition；
Wherein, the preset condition includes: that the edge size of pixel is more than or equal to the first default size and pixel
Brightness and previous frame image in same position pixel brightness between difference be less than predetermined luminance, side edge size
The brightness step for being pixel in edge direction；
Selecting module, for selecting and the co-located pixel of OSD pixel from first pixel collection
Point, obtains the second pixel collection, and the OSD pixel is OSD dish in multiple continuous images before the current frame image
Pixel where single region；
Second determining module, for being determined in the current frame image based on the pixel in second pixel collection
OSD menu region.
Optionally, the selecting module includes:
First determination unit, for determining the neighborhood territory pixel point number of each pixel in first pixel collection,
The neighborhood territory pixel point number is the pixel number in first pixel collection in pixel neighborhood of a point, the neighbour
The size in domain is the second default size；
First selecting unit, for selecting neighborhood territory pixel point number to be greater than or equal to from first pixel collection
The pixel of predetermined number obtains third pixel collection；
Second selecting unit, for from the third pixel collection, selection and OSD pixel to be co-located
Pixel obtains the second pixel collection.
Optionally, the preset condition further includes at least one of following condition:
Same position in the edge direction of the pixel previous frame image adjacent with the current frame image in current frame image
Angle between the edge direction for the pixel set is less than default angle；
The brightness variance of pixel is greater than or equal to the first default variance in current frame image；
The brightness of the brightness variance of pixel and the pixel of same position in the previous frame image in current frame image
Difference between variance is less than the second default variance.
Optionally, second determining module includes:
Second determination unit, it is described for the pixel area encompassed in second pixel collection to be determined as
OSD menu region in current frame image.
Optionally, second determining module includes:
Third determination unit, for determining multiple boundary pixel points, the multiple side from second pixel collection
Boundary's pixel is respectively minimum abscissa or maximum and ordinate minimum or maximum pixel；
4th determination unit, the rectangular area for being surrounded the multiple boundary pixel point are determined as the present frame
OSD menu region in image.
Optionally, second determining module includes:
Third selecting unit, for selecting multiple pixels, the multiple pixel from second pixel collection
In the neighbor pixel of each pixel belong to second pixel collection；
5th determination unit, for the multiple pixel area encompassed to be determined as in the current frame image
OSD menu region.
Optionally, described device further include:
Processing module, for when receiving the image processing commands for the current frame image, to the present frame
Region in image in addition to the OSD menu region carries out image procossing.
Technical solution provided in an embodiment of the present invention has the benefit that in embodiments of the present invention, first basis
The pixel for meeting preset condition in current frame image determines the first pixel collection, thus select in the edge OSD can
The energy biggish pixel of property, then from the first pixel collection, selection and the co-located pixel of OSD pixel,
The second pixel collection is obtained, to further be screened to the pixel in the first pixel collection, and then is improved really
The accuracy in the OSD menu region in settled prior image frame can needle when needing to carry out image procossing to current frame image
Image procossing is carried out to the region in addition to OSD menu region, without handling OSD menu region, to avoid OSD dish
Single distortion, so that OSD menu still can normally be shown after carrying out image quality processing to current frame image.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Figure 1A is a kind of OSD menu region method determining in the terminal for playing external video provided in an embodiment of the present invention
Flow chart；
Figure 1B is the schematic diagram of neighborhood of pixel points provided in an embodiment of the present invention；
Fig. 1 C (a) is the schematic diagram of each pixel in the first pixel collection provided in an embodiment of the present invention；
Fig. 1 C (b) is that terminal provided in an embodiment of the present invention corrodes each pixel in the first pixel collection
The schematic diagram of the pixel obtained after operation；
Fig. 1 D (a) is that terminal provided in an embodiment of the present invention corrodes each pixel in the first pixel collection
The schematic diagram of the pixel obtained after operation；
Fig. 1 D (b) is terminal provided in an embodiment of the present invention to by each pixel in the current frame image of erosion operation
Point carries out the schematic diagram of the pixel obtained after dilation operation；
Fig. 2A is a kind of OSD menu regional device determining in the terminal for playing external video provided in an embodiment of the present invention
Block diagram；
Fig. 2 B is a kind of block diagram of selecting module provided in an embodiment of the present invention；
Fig. 2 C is a kind of block diagram of second determining module provided in an embodiment of the present invention；
Fig. 2 D is the block diagram of another second determining module provided in an embodiment of the present invention；
Fig. 2 E is the block diagram of the third the second determining module provided in an embodiment of the present invention；
Fig. 2 F is that another OSD menu region determining in the terminal for playing external video provided in an embodiment of the present invention fills
The block diagram set.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
The embodiment of the invention provides it is a kind of play external video terminal in determine OSD menu region method,
In, the terminal for playing external video can be the terminals such as smart television or computer, referring to Figure 1A, this method comprises:
Step 101: from current frame image, determining the first pixel collection, include meeting in first pixel collection
The pixel of preset condition.
Wherein, for each pixel in current frame image, terminal first determines whether the pixel meets default item
Part, then from current frame image, selection meets the pixel of preset condition, and pixel composed by the pixel by selection
Set is determined as the first pixel collection.Wherein, which includes but is not limited to following condition:
(1) the edge size of pixel is more than or equal to the first default size in current frame image, which is pixel
Brightness step of the point in edge direction；
(2) difference in current frame image in the brightness of pixel and previous frame image between the brightness of same position pixel
Value is less than predetermined luminance.
Wherein, when in the preset condition including above-mentioned condition (1) and (2), terminal can pass through following step (1) and step
Suddenly (2) determine whether each pixel in current frame image meets preset condition:
Step (1): for each pixel in current frame image, terminal can determine the pixel in current frame image
Edge direction on edge size, then terminal is by the edge size and the in the edge direction of pixel in current frame image
One default size is compared, if the edge size is greater than or equal to the first default size, it is determined that in current frame image
The pixel meets condition (1), if the edge size is less than the first default size, it is determined that the pixel in current frame image
Point is unsatisfactory for condition (1).
It should be noted that the edge direction can be size maximum preset direction in edge in multiple preset directions,
It is for each preset direction in multiple preset directions, when brightness step of some pixel on the preset direction is maximum
When, which is determined as to the edge direction of the pixel, and the edge on the preset direction is sized to this
Edge size in the edge direction of pixel.Certainly, in practical application, when multiple preset direction includes horizontal direction and is hung down
Histogram to when, the edge direction of pixel can also be the ratio of vertical direction top edge size and horizontal direction top edge size
Arc-tangent value indicated by direction, that is to say that the angle between the edge direction and horizontal direction is the arc-tangent value, the picture
The edge size of vegetarian refreshments can be the arithmetic square of vertical direction top edge size and the quadratic sum of horizontal direction top edge size
Root, or can for vertical direction top edge size absolute value and horizontal direction top edge size absolute value and.Wherein
Edge size is for indicating brightness step of the pixel on the preset direction, and edge size is bigger, indicates the pixel
Brightness step in edge direction is bigger, and edge size is smaller, indicates that brightness step of the pixel in edge direction is got over
It is small.
For example, multiple preset direction can be in 45 degree of direction for horizontal direction x, vertical direction y and horizontal direction x
Xy and be in 135 degree of direction yx with horizontal direction x, and for any pixel point in current frame image, the pixel is in the side x
Upward edge size can be Ex, and edge size in y-direction can be Ey, and the edge size on the direction xy can be
Exy, the edge size on the direction yx can be Eyx, and when the value maximum of Ex in Ex, Ey, Exy and Eyx, terminal can be by water
Square it is determined as the edge direction of the pixel to x, and the edge size Ex on x in the horizontal direction is determined as the pixel
Edge size.
For another example, multiple preset direction can be horizontal direction x and vertical direction y, and in current frame image
Any pixel point, the edge size of the pixel in the x direction can be Ex, and edge size in y-direction can be Ey,
The edge direction of the pixel can beThe edge size of the pixel can beOr |
Ex|+|Ey|。
Step (2): each pixel for meeting above-mentioned condition (1), terminal can determine the brightness of the pixel,
It is the pixel value of the determining pixel, then each pixel from the previous frame image adjacent with current frame image of storage
Brightness in, can determine the brightness of the pixel co-located with the pixel in current frame image, terminal can be true
In the brightness of the fixed pixel and the previous frame image adjacent with current frame image between the brightness of the pixel of same position
Difference, and the difference is compared with predetermined luminance, if the difference is less than predetermined luminance, it is determined that the pixel meets item
Part (2), if the difference is greater than or equal to predetermined luminance, it is determined that the pixel is unsatisfactory for condition (2).
Since the brightness step between edge pixel point and non-edge pixels point can be bigger, and non-edge pixels point with it is non-
Brightness step between edge pixel point can be smaller, and therefore, when the preset condition includes above-mentioned condition (1), terminal can be with
From current frame image, selects the edge size in edge direction to be greater than or equal to the pixel of the first default size, that is to say
The pixel in any graphic edge in current frame image is selected, and the pixel for selecting, the pixel both may be used
It can be in the edge of OSD in current frame image, it is also possible to the edge of the figure in current frame image in addition to OSD.
Further, since current frame image is relative to the previous frame image adjacent with current frame image, video image
Part may change, and the part of OSD will not then change, and that is to say for the two field pictures of front and back, the portion OSD
The brightness divided will not change, therefore, when the preset condition further includes above-mentioned condition on the basis of including above-mentioned condition (1)
(2) when, terminal can select brightness and current frame image phase from each pixel for meeting condition (1) in current frame image
Difference in adjacent previous frame image between the brightness of the pixel of same position is less than the pixel of predetermined luminance, that is to say choosing
The pixel that brightness does not change in the two field pictures of front and back or brightness change is minimum is selected, thus from the picture of multiple graphic edges
In vegetarian refreshments, the pixel in the edge OSD is selected.
It should be noted that the preset condition not only may include above-mentioned two condition, in practical application, in order to improve really
Determine the accuracy in OSD menu region, which can also include at least one of following condition (3), (4), (5):
(3) same position in the edge direction of the pixel previous frame image adjacent with current frame image in current frame image
Pixel edge direction between angle be less than default angle.
(4) the brightness variance of pixel is greater than or equal to the first default variance in current frame image.
(5) in current frame image in the brightness variance of pixel and previous frame image the pixel of same position brightness side
Difference between difference is less than the second default variance.
Since when preset condition difference, terminal judges whether each pixel in current frame image meets preset condition
Method it is also different, therefore, terminal judges whether each pixel in current frame image meets the mode of preset condition and wrapping
It includes on the basis of whether the above-mentioned each pixel judged in current frame image meet condition (1) and the mode of (2), can also wrap
Include at least one of following three kinds of modes:
First way: when the preset condition further includes above-mentioned condition (3), for meeting above-mentioned item in current frame image
Each pixel of part (1) and (2), terminal can determine the edge direction of the pixel in current frame image, then from storage
The previous frame image adjacent with current frame image in each pixel edge direction in, can determine in current frame image
The edge direction of the co-located pixel of the pixel, terminal can determine the edge side of pixel in current frame image
To and with angle in the adjacent previous frame image of current frame image between the edge direction of the pixel of same position, and will be true
Fixed angle is compared with default angle, if the angle is less than default angle, it is determined that the pixel in current frame image
Point meets condition (3), if the angle is greater than or equal to default angle, it is determined that the pixel in current frame image is unsatisfactory for
Condition (3).
For the pixel of same position in the two field pictures of front and back, if the pixel is true in the two field pictures of front and back
It is set to the pixel in the edge OSD, then edge direction of the pixel in the two field pictures of front and back should identical or difference
Very little, therefore, terminal can further selection meets the pixel of above-mentioned condition (3) from current frame image, to improve true
Determine the accuracy of OSD edge pixel point.
The second way: when the preset condition further includes above-mentioned condition (4), for meeting above-mentioned item in current frame image
Each pixel of part (1) and (2), terminal can determine the brightness of the pixel in current frame image, and be in the pixel
The brightness of pixel in neighborhood of a point, and according to the brightness of the pixel and the pixel in the pixel neighborhood of a point
Brightness, determine the average value of pixel brightness in the neighborhood, then according to determining average brightness, determine picture in the neighborhood
The brightness variance of vegetarian refreshments, and determining brightness variance is determined as to the brightness variance of the pixel in current frame image, terminal will
The brightness variance of the pixel is compared with the first default variance in current frame image, if the brightness variance is greater than or equal to
First default variance, it is determined that the pixel in current frame image meets condition (4), if the brightness variance is pre- less than first
If variance, it is determined that the pixel in current frame image is unsatisfactory for condition (4).
Since the brightness variance between edge pixel point and non-edge pixels point can be bigger, that is to say edge pixel point with
Luminance difference between non-edge pixels point can be bigger, therefore for each pixel in current frame image, when the pixel
Brightness variance be greater than or equal to the first default variance when, can determine the pixel be edge pixel point a possibility that it is larger,
Therefore, terminal can further select the pixel for meeting above-mentioned condition (4) from current frame image, to improve determining OSD
The accuracy of edge pixel point.
It should be noted that terminal according to determining average brightness, determines the brightness variance of pixel in the neighborhood
Method can refer to the relevant technologies, this is not set forth in detail in the embodiment of the present invention.
The third mode: when the preset condition further includes above-mentioned condition (5), for meeting above-mentioned item in current frame image
Each pixel of part (1) and (2), terminal can determine the brightness variance of the pixel in current frame image, then from storage
The previous frame image adjacent with current frame image in each pixel brightness variance in, can determine in current frame image
The brightness variance of the co-located pixel of the pixel, terminal can determine the brightness side of pixel in current frame image
Difference in difference and the previous frame image adjacent with current frame image between the brightness variance of the pixel of same position, and should
Difference is compared with the second default variance, if the difference is less than the second default variance, it is determined that being somebody's turn to do in current frame image
Pixel meets condition (5), if the difference is greater than or equal to the second default variance, it is determined that the pixel in current frame image
Point is unsatisfactory for condition (5).
For the pixel of same position in the two field pictures of front and back, if the pixel is true in the two field pictures of front and back
It is set to the pixel in the edge OSD, then brightness variance of the pixel in the two field pictures of front and back should identical or difference
Very little, therefore, terminal can further selection meets the pixel of above-mentioned condition (5) from current frame image, to improve true
Determine the accuracy of OSD edge pixel point.
It should be noted that when the preset condition includes multiple and different condition, terminal can from current frame image,
Selection while the pixel for meeting multiple condition, so as to improve the accuracy of determining OSD edge pixel point.
In addition, terminal after determining the first pixel collection, can also be to belong to the first pixel in current frame image
The pixel of set adds first identifier, and to be not belonging to the pixel of the first pixel collection addition the in current frame image
Two marks, and first identifier and second identifier be not identical, for example first identifier can be 1, second identifier can be 0.
Step 102: determining the neighborhood territory pixel point number of each pixel in the first pixel collection, the neighborhood territory pixel point
Number is the number of the pixel in the first pixel collection in each pixel neighborhood of a point, and the size of the neighborhood is second pre-
If size.
For each pixel in the first pixel collection, which may be the true pixel for being in the edge OSD
Point, while may also be the pixel for being not at the edge OSD but meeting preset condition.For the first pixel, due to this
A possibility that pixel is really in the edge OSD, therefore pixel adjacent thereto also meets preset condition is larger, that is to say place
It is larger in the pixel in the neighborhood of pixel points is also at the edge OSD a possibility that, so belonging in the pixel neighborhood of a point
The pixel of first pixel collection may be more.And for second of pixel, which may be accidental satisfaction
Preset condition, therefore the pixel is possible for isolated existing point, that is to say that the pixel meets preset condition, but is in
Preset condition may be not satisfied in pixel in the neighborhood of pixel points or only only a few pixel meets preset condition, this
When can consider that a possibility that pixel is in the edge OSD is smaller.Therefore, terminal can determine every in the first pixel collection
The neighborhood territory pixel point number of a pixel that is to say and determine that satisfaction is default in each pixel neighborhood of a point in the first pixel collection
The pixel number of condition that is to say with from the first pixel collection, selecting the more pixel of neighborhood territory pixel point number
It selects in the biggish pixel of the edge OSD possibility.
It should be noted that the second default size can be for this for each pixel in the first pixel collection
Centered on pixel, and the size in region shared by the M × M pixel adjacent with the pixel, wherein M is the positive surprise greater than 2
Number.But in order to save the system resource of terminal, M should not be arranged excessive, for example set 3 or 5 more for M and be suitable for.Such as
Referring to Figure 1B, when M is 3, the Size of Neighborhood of pixel A can for centered on pixel A, and 3 adjacent with pixel A ×
The size of shadow region shared by 3 pixels.
Step 103: from the first pixel collection, neighborhood territory pixel point number being selected to be greater than or equal to the pixel of predetermined number
Point obtains third pixel collection.
For each pixel in the first pixel collection, when the neighborhood territory pixel point number of the pixel is greater than or equal in advance
If when number, it is believed that the pixel for meeting preset condition in the neighborhood of pixel points is relatively more, and that is to say can consider
A possibility that pixel is the pixel at the edge OSD is larger, therefore terminal can select neighborhood from the first pixel collection
Pixel number is greater than or equal to the pixel of predetermined number, and pixel collection composed by the pixel by selection is determined as
Third pixel collection.
It should be noted that terminal can be by clicking through each pixel in the first pixel collection in practical application
Row opening operation first carries out erosion operation, then carries out dilation operation, realize above-mentioned steps 102 to step 103, to obtain third
Pixel collection, the implementation include the following steps (1), step (2) and step (3):
(1) erosion operation: from each pixel in the first pixel collection, the pixel in neighborhood is selected to all belong to
The pixel of first pixel collection.
For example, each pixel in the first pixel collection can be the pixel as shown in Fig. 1 C (a), to the first picture
Each pixel in vegetarian refreshments set carries out erosion operation, and the pixel selected can be the pixel as shown in Fig. 1 C (b).
(2) dilation operation: from each pixel of current frame image, there are at least one to belong to first in selection neighborhood
The pixel of pixel collection.
In order to avoid accidentally removing the pixel in the corner OSD when determining OSD edge pixel point, predetermined number is usual
It can be set to 1, that is to say, in each pixel from current frame image, select in neighborhood that there are at least one to belong to the
When the pixel of one pixel collection, it is believed that be the pixel for selecting pixel number to be greater than or equal to predetermined number.
Certainly, in practical application, predetermined number can also be greater than 1, and the present invention is not especially limit this.
For example, carrying out the pixel that erosion operation is selected can be the pixel as shown in Fig. 1 D (a), expansion fortune is carried out
The pixel selected can be the pixel as shown in Fig. 1 D (b).
(3) pixel collection composed by the pixel by dilation operation selection is determined as third pixel collection.
For each pixel in current frame image, which may be following three classes pixels: the picture in neighborhood
Vegetarian refreshments belongs to the pixel of the first pixel collection, the pixel in neighborhood some belong to the picture of the first pixel collection
Pixel in vegetarian refreshments and neighborhood is not admitted to the pixel of the first pixel collection.When terminal carries out erosion operation, choosing
The pixel selected out is first kind pixel, and when terminal carries out dilation operation, the pixel selected is the second class pixel,
It is picture of the pixel number more than or equal to predetermined number 1 that first kind pixel and the second class pixel, which take the pixel of intersection,
Vegetarian refreshments, so that the set including first kind pixel and the second class pixel can be determined as third pixel collection by terminal.
For example, terminal can carry out dilation operation, choosing to by each pixel in the current frame image of erosion operation
Shown in the pixel selected out such as Fig. 1 D (b), and picture composed by the pixel of dilation operation selection will be passed through shown in Fig. 1 D (b)
Vegetarian refreshments set is determined as third pixel collection.
It, can also be to belong to the in current frame image it should be noted that terminal is after determining third pixel collection
The pixel of three pixel collections adds first identifier, and to be not belonging to the pixel of third pixel collection in current frame image
Point addition second identifier.
Step 104: from third pixel collection, selection and the co-located pixel of OSD pixel obtain the
Two pixel collections, the OSD pixel are the pixel where OSD menu region in multiple continuous images before current frame image
Point.
For being in the pixel at the edge OSD in current frame image, in multiple continuous images before current frame image,
It should be at the edge OSD of respective correspondence image with the co-located pixel of the pixel, therefore, terminal can be from
In three pixel collections, selection and the co-located pixel of OSD pixel, and picture composed by the pixel by selection
Vegetarian refreshments set is determined as the second pixel collection.
It should be noted that the quantity of multiple continuous images before current frame image can be terminal preset number in advance
Value, such as the quantity can be 10,15,20 etc..In addition, since terminal needs to determine the OSD in current frame image as early as possible
Menu area, therefore, the quantity should not be arranged excessive, so as not to extend determine current frame image in OSD menu region when
Between, while the waste of terminal system resource is also avoided, but the quantity is also unsuitable too small, can reduce determination if the quantity is too small
The accuracy in the OSD menu region in current frame image.
In addition, terminal after determining the second pixel collection, can also be to belong to the second pixel in current frame image
The pixel of set adds first identifier, and to be not belonging to the pixel of the second pixel collection addition the in current frame image
Two marks.
Step 105: the OSD menu region in current frame image is determined based on the pixel in the second pixel collection.
It in embodiments of the present invention, can be possible by following three kinds based on the pixel in the second pixel collection
Implementation determines the OSD menu region in current frame image, comprising:
The first possible implementation, terminal determine multiple edge pixel points, Duo Gebian from the second pixel collection
Edge pixel is respectively minimum abscissa or maximum and ordinate minimum or maximum pixel.
Since most OSD menu region is regular rectangular area, terminal can be from the second pixel collection
In, determine that multiple edge pixel points, multiple edge pixel points are respectively that abscissa is minimum or maximum and ordinate is minimum or maximum
Pixel, i.e., abscissa is minimum and the smallest pixel of ordinate, abscissa are minimum and the maximum pixel of ordinate, horizontal seat
Mark maximum and the smallest pixel of ordinate and abscissa maximum and the maximum pixel of ordinate, that is to say from the second pixel
In point set, the pixel in the lower left corner OSD, the pixel in the upper left corner, the pixel in the lower right corner and the pixel in the upper right corner are determined
Point, then the rectangular area that multiple edge pixel point is surrounded can be determined as the OSD menu in current frame image by terminal
Region.Since terminal only need to determine the OSD menu region in current frame image according to multiple edge pixel point, without basis
All pixels in second pixel collection determine the OSD menu region in current frame image, to save terminal
System resource.
Pixel area encompassed in second pixel collection is determined as by second of possible implementation, terminal
OSD menu region in current frame image.
OSD irregular for display area, when terminal determines present frame by the first above-mentioned possible implementation
When OSD menu region in image, the irregular corner areas of OSD may be determined as to its in addition to OSD menu region
His region, and the important information of OSD is also likely to be present in these irregular corner areas, therefore, in order to avoid that will likely wrap
The corner areas for including OSD important information excludes except OSD menu region, and terminal can will own in the second pixel collection
Pixel area encompassed is determined as the OSD menu region in current frame image.
The third possible implementation, terminal select multiple pixels, multiple pixels from the second pixel collection
In the neighbor pixel of each pixel belong to the second pixel collection；Multiple pixel areas encompassed are determined as working as
OSD menu region in prior image frame.
Since terminal is when executing above-mentioned steps 101 to step 104, the second picture may be led to because of individual data entanglement
The pixel of preset condition is remained unchanged there are only a few isolated pixel point or is unsatisfactory in vegetarian refreshments set, so, when terminal passes through
When above-mentioned the first and second of possible implementation determine the OSD menu region in current frame image, it may make really
Still comprising only a few isolated pixel point or it is unsatisfactory for the pixel of preset condition in fixed OSD menu region, therefore, in order to
The accuracy in determining OSD menu region is further increased, terminal can select multiple pixels from the second pixel collection,
And multiple pixel areas encompassed are determined as to the OSD menu region in current frame image.
It should be noted that terminal can be realized above-mentioned by double scan method or se ed filling algorithm in practical application
The third possible implementation, to determine the OSD menu region in current frame image.
In addition, since terminal can be to belong to the first pixel collection, the second pixel collection, third pixel collection
Pixel adds first identifier, therefore terminal can also select to be respectively marked with first identifier when marking three times from current frame image
Pixel, and the pixel area encompassed of selection is determined as to the OSD menu region in current frame image.
Step 106: when receiving the image processing commands for current frame image, to removing OSD dish in current frame image
Region except single region carries out image procossing.
Wherein, when receiving the image processing commands for current frame image, terminal can refer to according to the image procossing
Corresponding image processing operations are enabled, image procossing is carried out to the region in current frame image in addition to OSD menu region.
It should be noted that the image processing commands for current frame image can be led to by the user for currently holding the terminal
Specified operation triggering is crossed, which can grasp for the sliding of clicking operation, desired guiding trajectory to image processing operations option
Work, voice operating etc..
In embodiments of the present invention, the first pixel is determined according to the pixel for meeting preset condition in current frame image first
Point set, thus the biggish pixel of a possibility that selecting in the edge OSD, then according to each in the first pixel collection
The pixel number of pixel selects pixel number to be greater than or equal to the pixel of predetermined number from the first pixel collection
Point obtains third pixel collection, so as to which from the first pixel collection, removal meets preset condition and isolates existing
Pixel, then from third pixel collection, selection and the co-located pixel of OSD pixel obtain the second picture
Vegetarian refreshments set to further screen to the pixel in third pixel collection, and then improves determining present frame figure
The accuracy in the OSD menu region as in can be only to current when receiving the image processing commands for current frame image
Region in frame image in addition to OSD menu region carries out image procossing, without handling OSD menu region, to keep away
Exempt from the distortion of OSD menu, so that OSD menu still can normally be shown after carrying out image quality processing to current frame image.
A referring to fig. 2 determines OSD menu region the embodiment of the invention provides a kind of in the terminal for playing external video
Device 200, the device include: the first determining module 201, selecting module 202, the second determining module 203.
First determining module 201, for determining the first pixel collection, the first pixel collection from current frame image
In include meeting the pixel of preset condition；
Wherein, preset condition includes: that the edge size of pixel is more than or equal to the bright of the first default size and pixel
Difference in degree and previous frame image between the brightness of same position pixel is less than predetermined luminance, and edge size is pixel edge
Brightness step in edge direction；
Selecting module 202, for selecting and the co-located pixel of OSD pixel from the first pixel collection
Point, obtains the second pixel collection, and OSD pixel is OSD menu region institute in multiple continuous images before current frame image
Pixel；
Second determining module 203, for determining the OSD in current frame image based on the pixel in the second pixel collection
Menu area.
Optionally, B, selecting module 202 include: referring to fig. 2
First determination unit 2021, for determining the neighborhood territory pixel point number of each pixel in the first pixel collection,
Neighborhood territory pixel point number is the pixel number in the first pixel collection in the pixel neighborhood of a point, and the size of neighborhood is the
Two default sizes；
First selecting unit 2022, for selecting neighborhood territory pixel point number to be greater than or equal to from the first pixel collection
The pixel of predetermined number obtains third pixel collection；
Second selecting unit 2023, for from third pixel collection, selection and OSD pixel to be co-located
Pixel obtains the second pixel collection.
Optionally, preset condition further includes at least one of following condition:
Same position in the edge direction of the pixel previous frame image adjacent with current frame image in current frame image
Angle between the edge direction of pixel is less than default angle；
The brightness variance of pixel is greater than or equal to the first default variance in current frame image；
The brightness variance of the brightness variance of pixel and the pixel of same position in previous frame image in current frame image
Between difference less than the second default variance.
Optionally, C, the second determining module 203 include: referring to fig. 2
Second determination unit 2031, for the pixel area encompassed in the second pixel collection to be determined as currently
OSD menu region in frame image.
Optionally, D, the second determining module 203 include: referring to fig. 2
Third determination unit 2032, for determining multiple boundary pixel points, multiple boundary pictures from the second pixel collection
Vegetarian refreshments is respectively minimum abscissa or maximum and ordinate minimum or maximum pixel；
4th determination unit 2033, the rectangular area for being surrounded multiple boundary pixel points are determined as current frame image
In OSD menu region.
Optionally, E, the second determining module 203 include: referring to fig. 2
Third selecting unit 2034 selects multiple pixels for from the second pixel collection, every in multiple pixels
The neighbor pixel of a pixel belongs to the second pixel collection；
5th determination unit 2035, for multiple pixel areas encompassed to be determined as the OSD in current frame image
Menu area.
Optionally, F referring to fig. 2, the device further include:
Processing module 204, for when receiving the image processing commands for current frame image, in current frame image
Region in addition to OSD menu region carries out image procossing.
In conclusion in embodiments of the present invention, it is true according to the pixel for meeting preset condition in current frame image first
Fixed first pixel collection, thus the biggish pixel of a possibility that selecting in the edge OSD, then from the first pixel point set
In conjunction, selection and the co-located pixel of OSD pixel obtain the second pixel collection, thus further to first
Pixel in pixel collection is screened, and then improves the accuracy in the OSD menu region in determining current frame image,
When needing to carry out image procossing to current frame image, can be carried out at image just for the region in addition to OSD menu region
Reason, without handling OSD menu region, so that the distortion of OSD menu is avoided, so that carrying out at image quality to current frame image
After reason, OSD menu still can normally be shown.
It should be understood that provided by the above embodiment determine OSD menu region in the terminal for playing external video
Device is at the display area for determining OSD, only the example of the division of the above functional modules, can in practical application
To be as needed completed by different functional modules above-mentioned function distribution, i.e., the internal structure of equipment is divided into different
Functional module, to complete all or part of the functions described above.In addition, provided by the above embodiment playing external video
Terminal in determine the device in OSD menu region and determine that the method in OSD menu region is real in the terminal for playing external video
It applies example and belongs to same design, specific implementation process is detailed in embodiment of the method, and which is not described herein again.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of method for determining screen in the terminal for playing external video and showing OSD menu region, which is characterized in that described
Method includes:
From current frame image, the first pixel collection is determined, include meeting preset condition in first pixel collection
Pixel；
Wherein, the preset condition includes: that the edge size of pixel is more than or equal to the bright of the first default size and pixel
Difference in degree and previous frame image between the brightness of same position pixel is less than predetermined luminance, and the edge size is pixel
Brightness step of the point in edge direction；
From first pixel collection, selection and the co-located pixel of OSD pixel obtain the second pixel
Set, the OSD pixel are the pixel where OSD menu region in multiple continuous images before the current frame image
Point；
The OSD menu region in the current frame image is determined based on the pixel in second pixel collection；
When receiving the image processing commands for the current frame image, to removing the OSD dish in the current frame image
Region except single region carries out image procossing.
2. the method as described in claim 1, which is characterized in that described from first pixel collection, selection and OSD picture
The co-located pixel of vegetarian refreshments, obtains the second pixel collection, comprising:
Determine the neighborhood territory pixel point number of each pixel in first pixel collection, the neighborhood territory pixel point number is institute
The pixel number in the first pixel collection in pixel neighborhood of a point is stated, the size of the neighborhood is second default big
It is small；
From first pixel collection, selects neighborhood territory pixel point number to be greater than or equal to the pixel of predetermined number, obtain
Third pixel collection；
From the third pixel collection, selection and the co-located pixel of OSD pixel obtain the second pixel
Set.
3. method according to claim 1 or 2, which is characterized in that the preset condition further include in following condition at least
One:
Same position in the edge direction of the pixel previous frame image adjacent with the current frame image in current frame image
Angle between the edge direction of pixel is less than default angle；
The brightness variance of pixel is greater than or equal to the first default variance in current frame image；
The brightness variance of the brightness variance of pixel and the pixel of same position in the previous frame image in current frame image
Between difference less than the second default variance.
4. the method as described in claim 1, which is characterized in that described true based on the pixel in second pixel collection
OSD menu region in the fixed current frame image, comprising:
OSD menu pixel area encompassed in second pixel collection being determined as in the current frame image
Region.
5. the method as described in claim 1, which is characterized in that described true based on the pixel in second pixel collection
OSD menu region in the fixed current frame image, comprising:
From second pixel collection, determine that multiple boundary pixel points, the multiple boundary pixel point are respectively abscissa
Minimum or maximum and ordinate minimum or maximum pixel；
The rectangular area that the multiple boundary pixel point is surrounded is determined as to the OSD menu region in the current frame image.
6. the method as described in claim 1, which is characterized in that described true based on the pixel in second pixel collection
OSD menu region in the fixed current frame image, comprising:
From second pixel collection, multiple pixels are selected, the adjacent picture of each pixel in the multiple pixel
Vegetarian refreshments belongs to second pixel collection；
The multiple pixel area encompassed is determined as to the OSD menu region in the current frame image.
7. a kind of device for determining OSD menu region in the terminal for playing external video, which is characterized in that described device packet
It includes:
First determining module, for determining the first pixel collection, being wrapped in first pixel collection from current frame image
Include the pixel for meeting preset condition；
Wherein, the preset condition includes: that the edge size of pixel is more than or equal to the bright of the first default size and pixel
Difference in degree and previous frame image between the brightness of same position pixel is less than predetermined luminance, and the edge size is pixel
Brightness step of the point in edge direction；
Selecting module is used for from first pixel collection, selection and the co-located pixel of OSD pixel,
The second pixel collection is obtained, the OSD pixel is OSD menu area in multiple continuous images before the current frame image
Pixel where domain；
Second determining module, for being determined in the current frame image based on the pixel in second pixel collection
OSD menu region；
Processing module, for when receiving the image processing commands for the current frame image, to the current frame image
In region in addition to the OSD menu region carry out image procossing.
8. device as claimed in claim 7, which is characterized in that the selecting module includes:
First determination unit, it is described for determining the neighborhood territory pixel point number of each pixel in first pixel collection
Neighborhood territory pixel point number is the pixel number in first pixel collection in pixel neighborhood of a point, the neighborhood
Size is the second default size；
First selecting unit, it is default for from first pixel collection, selecting neighborhood territory pixel point number to be greater than or equal to
The pixel of number obtains third pixel collection；
Second selecting unit, for selecting and the co-located pixel of OSD pixel from the third pixel collection
Point obtains the second pixel collection.
9. device as claimed in claim 7 or 8, which is characterized in that the preset condition further include in following condition at least
One:
Same position in the edge direction of the pixel previous frame image adjacent with the current frame image in current frame image
Angle between the edge direction of pixel is less than default angle；
The brightness variance of pixel is greater than or equal to the first default variance in current frame image；
The brightness variance of the brightness variance of pixel and the pixel of same position in the previous frame image in current frame image
Between difference less than the second default variance.
10. device as claimed in claim 7, which is characterized in that second determining module includes:
Second determination unit, it is described current for the pixel area encompassed in second pixel collection to be determined as
OSD menu region in frame image.
11. device as claimed in claim 7, which is characterized in that second determining module includes:
Third determination unit, for determining multiple boundary pixel points, the multiple boundary picture from second pixel collection
Vegetarian refreshments is respectively minimum abscissa or maximum and ordinate minimum or maximum pixel；
4th determination unit, the rectangular area for being surrounded the multiple boundary pixel point are determined as the current frame image
In OSD menu region.
12. device as claimed in claim 7, which is characterized in that second determining module includes:
Third selecting unit selects multiple pixels for from second pixel collection, every in the multiple pixel
The neighbor pixel of a pixel belongs to second pixel collection；
5th determination unit, the OSD for being determined as the multiple pixel area encompassed in the current frame image
Menu area.
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