WO2017113599A1 - 视频播放控制方法及装置 - Google Patents

视频播放控制方法及装置 Download PDF

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Publication number
WO2017113599A1
WO2017113599A1 PCT/CN2016/084539 CN2016084539W WO2017113599A1 WO 2017113599 A1 WO2017113599 A1 WO 2017113599A1 CN 2016084539 W CN2016084539 W CN 2016084539W WO 2017113599 A1 WO2017113599 A1 WO 2017113599A1
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Prior art keywords
pixel
gain
difference
adjacent
image
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PCT/CN2016/084539
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English (en)
French (fr)
Inventor
郑泽龙
王云华
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深圳Tcl数字技术有限公司
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Publication of WO2017113599A1 publication Critical patent/WO2017113599A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene

Definitions

  • the present invention relates to the field of image processing technologies, and in particular, to a video playback control method and apparatus.
  • HDR High-Dynamic Range, high dynamic range technology is gradually applied to video programs, making the quality of smart TV broadcast HDR video programs clearer.
  • non-HDR video programs there are still a large number of non-HDR video programs. Due to the lower pixels of non-HDR video programs, when non-HDR video programs are played on smart TVs, the quality of non-HDR video programs is poor, which in turn affects viewing. The visual effect of the show.
  • the invention provides a video playback control method and device, which aims to solve the technical problem of poor quality of a non-HDR video program played by a smart TV.
  • the present invention provides a video playback control method, and the video playback control method includes the following steps:
  • the step of acquiring the gain fine granularity of the adjacent two pixel points when the difference between the gain values of the adjacent two pixel points acquired each time is greater than the first preset difference value comprises:
  • the pitch of the adjacent two pixel points is calculated based on the coordinates of the adjacent two pixel points;
  • the gain fine granularity of the adjacent two pixel points is acquired.
  • the present invention further provides a video playback control method, where the video playback control method includes the following steps:
  • the step of determining whether the gain value of the pixel point of the image to be processed meets a preset condition comprises:
  • the gain value of the point satisfies the preset condition.
  • the coordinates of the adjacent two pixel points include a first coordinate and a second coordinate, and the difference between the gain values of the adjacent two pixel points acquired each time is greater than the first preset difference value,
  • the steps of adding pixel points in the transparent layer based on gain values, differences, and coordinates of adjacent two pixel points include:
  • the step of acquiring the gain fine granularity of the adjacent two pixel points when the difference between the gain values of the adjacent two pixel points acquired each time is greater than the first preset difference value comprises:
  • the pitch of the adjacent two pixel points is calculated based on the coordinates of the adjacent two pixel points;
  • the gain fine granularity of the adjacent two pixel points is acquired.
  • the coordinates of the adjacent two pixel points include a first coordinate and a second coordinate, and the difference between the gain values of the adjacent two pixel points acquired each time is greater than the first preset difference value,
  • the steps of adding pixel points in the transparent layer based on gain values, differences, and coordinates of adjacent two pixel points include:
  • the present invention further provides a video playback control apparatus, where the video playback control apparatus includes:
  • a first acquiring module configured to acquire a to-be-processed image of the current video program when the image of the video program played on the television display interface is a non-high dynamic range HDR image
  • a determining module configured to determine whether a gain value of the pixel of the image to be processed meets a preset condition
  • An adding module configured to add a transparent layer above the display layer of the image to be processed when a gain value of the pixel of the image to be processed satisfies a preset condition
  • a second acquiring module configured to sequentially acquire, according to coordinates of each pixel point in the image to be processed, a gain value of two adjacent pixels in the pixel point whose gain value meets the preset condition
  • the present invention acquires a to-be-processed image of the current video program by using an image of the video program played on the television display interface as a non-HDR image, and then determines whether the gain value of the pixel of the image to be processed satisfies a preset condition, and then When the gain value of the pixel of the image to be processed satisfies a preset condition, a transparent layer is added above the display layer of the image to be processed, and then the gain value is sequentially obtained according to the coordinates of each pixel in the image to be processed.
  • the gain value of two adjacent pixel points in the conditional pixel, and finally, based on the difference between the gain values of the adjacent two pixel points obtained each time is greater than the first preset difference value, based on the adjacent two pixel points Gain values, differences, and coordinates add pixels to the transparent layer.
  • FIG. 1 is a schematic flow chart of a first embodiment of a video playback control method according to the present invention
  • FIG. 2 is a schematic flowchart of a step of adding a pixel point in a transparent layer in a second embodiment of the video playback control method according to the present invention
  • FIG. 3 is a schematic flowchart of a step of obtaining a gain mean value in a third embodiment of a video playback control method according to the present invention.
  • FIG. 4 is a schematic flowchart of a step of adding a pixel point in a transparent layer in a fourth embodiment of the video playback control method according to the present invention.
  • FIG. 5 is a schematic diagram of functional modules of a first embodiment of a video playback control apparatus according to the present invention.
  • FIG. 6 is a schematic diagram of a refinement function module of an add module in a second embodiment of a video playback control apparatus according to the present invention.
  • FIG. 7 is a schematic diagram of a refinement function module of a first acquiring unit in a third embodiment of a video playback control apparatus according to the present invention.
  • FIG. 8 is a schematic diagram of a refinement function module of an adding module in a fourth embodiment of the video playback control apparatus according to the present invention.
  • the invention provides a video playback control method.
  • 1 is a schematic flowchart of a first embodiment of a video playback control method according to the present invention.
  • the video playback control method includes:
  • Step S10 Acquire an image to be processed of the current video program when the image of the video program played on the television display interface is a non-high dynamic range HDR image;
  • the television detects an image of the video program played by the display interface in real time, and acquires a to-be-processed image of the current video program when the detected image is a non-high dynamic range HDR image.
  • the television may periodically acquire the to-be-processed image of the current video program.
  • the time interval for acquiring the image to be processed of the current video program may be 10 ms, 15 ms, etc., to ensure that each time The frame image is subjected to subsequent processing.
  • the television can directly obtain the image information to be played in the video code stream corresponding to the video program received by the television, or directly obtain the image displayed on the display interface. In this embodiment, the television directly acquires the image. It displays the image displayed on the interface.
  • Step S20 determining whether a gain value of the pixel of the image to be processed meets a preset condition
  • each pixel of the image to be processed is represented by three basic color channels of R/G/B (Red/Green/Blue, red/green/blue), and the television obtains the RGB gain value of the pixel of the image to be processed.
  • a certain gain value of the value is used as the gain value to be adjusted.
  • the R gain value is selected as the gain value to be adjusted, and then it is determined whether the R gain value of the pixel of the image to be processed satisfies a preset condition.
  • the G gain value may also be selected.
  • B gain value the selection of the gain value to be adjusted in the RGB gain value may be selected according to the RGB gain value of the pixel of the image to be processed, for example, the R gain value may be selected as the to-be-adjusted gain value for the reddish image to be processed, for the greenish
  • the image to be processed can select the G gain value as the gain value to be adjusted, and the B gain value can be selected as the to-be-adjusted gain value for the blue to-be-processed image.
  • the preset condition includes that the gain value of the pixel in the image to be processed is within a preset range (the preset range includes the first preset range and the second preset range), and the number of pixels is greater than a preset threshold, that is, When the number of the pixels whose gain value is within the preset range is greater than the preset threshold, the gain value of the pixel of the image to be processed satisfies a preset condition.
  • the preset threshold is determined according to the total number of pixels in the image to be processed. In general, the preset threshold may be set to 1/3 of the total number of pixels in the image to be processed, and the R gain.
  • the value range of the value is 0 ⁇ 255.
  • the pixel in the first preset range is a dark pixel. Since the gain value of the pixel is less than 1/3 of the gain value range, that is, the pixel gain value is less than 85, the gain value is smaller. The small color is very dark, and the step display cannot be realized, which does not reflect the strong sense of clarity. Therefore, the first preset range can be any one of 0 to 85, 0 to 100, or 85 to 128, and the maximum gain is less than 128. range. Preferably, the first preset range is 1/3 ⁇ 1/2 of the gain value range, and specifically may be 85 ⁇ 128.
  • the second preset range may be any range of the gain minimum value greater than 128, such as 170 ⁇ 255, 128 ⁇ 255 or 170 ⁇ 240, and the pixel points belonging to the second preset range are bright pixel points.
  • the second preset range is 2/3 ⁇ 1 of the gain value range, such as 170 ⁇ 255.
  • Step S30 adding a transparent layer above the display layer of the image to be processed when the gain value of the pixel of the image to be processed satisfies a preset condition
  • the transparent layer and the pixel coordinates of the image to be processed are all transparent pixels, so that the newly added transparent layer affects the display of the image to be processed.
  • Step S40 sequentially acquiring, according to coordinates of each pixel point in the image to be processed, a gain value of two adjacent pixels in the pixel point whose gain value meets the preset condition;
  • the obtained gain value is a gain value of two pixel points adjacent to the coordinates of the pixel in the same preset range in the preset condition.
  • Step S50 when the difference between the gain values of the adjacent two pixel points acquired is greater than the first preset difference value, the gain values, the difference values, and the coordinates based on the adjacent two pixel points are in the transparent layer. Add pixels to the point.
  • the television adds a pixel point at a position corresponding between the transparent layer and the coordinates of two adjacent pixel points of the image to be processed, wherein the gain value of the pixel is the average value of the gain, and in general, the pixel point The number is not greater than the difference.
  • the image to be processed of the current video program is acquired, and then determining whether the gain value of the pixel of the image to be processed satisfies a preset condition, and then When the gain value of the pixel of the image to be processed satisfies a preset condition, a transparent layer is added above the display layer of the image to be processed, and then the gain value is sequentially obtained based on the coordinates of each pixel in the image to be processed.
  • step S50 includes:
  • step S51 the gain fine granularity of the adjacent two pixel points is obtained when the difference between the gain values of the adjacent two pixel points is greater than the first preset difference value.
  • the first preset difference value may be set to 2, 4, 10, etc.
  • the difference between the gain values of two adjacent pixel points refers to the absolute value of the result obtained by subtracting the gain values of two adjacent pixel points.
  • the television acquires coordinates and gain fine granularity of two adjacent pixels, wherein the gain fine granularity is a gain change of the added pixel between the adjacent two pixels. value.
  • Step S52 calculating a gain value of the pixel to be added based on the gain value of the pixel corresponding to the first coordinate and the fine granularity of the gain;
  • the gain value of the pixel to be added is subtracted from the gain value of the pixel corresponding to the first coordinate.
  • the gain is fine-grained.
  • the gain value of the pixel to be added is increased by the gain value of the pixel corresponding to the first coordinate. The gain is fine-grained.
  • the gain value of the pixel to be added is the pixel corresponding to the second coordinate.
  • the gain value sequentially increases the gain fine granularity.
  • the gain value of the pixel to be added is the pixel corresponding to the second coordinate. The gain value in turn reduces the fine-grained gain.
  • Step S53 uniformly adding pixel points between the first coordinate and the second coordinate of the transparent layer based on the gain value of the pixel to be added and the difference.
  • the number of added pixels is the difference divided by the fine granularity of the gain.
  • the difference is divided by the integer of the fine-grained gain as the number of added pixels.
  • the pixel point may be sequentially added after the pixel corresponding to the first coordinate, and the gain value of the added pixel point is the gain value of the pixel corresponding to the first coordinate minus the gain fine granularity, or in the second
  • the gain fine granularity is decreased by one pixel point, and the gain value of the added pixel point is sequentially increased by the gain value of the corresponding pixel point of the second coordinate; when the difference is negative, the first coordinate corresponds to the pixel point.
  • the gain fine grain size may be sequentially decreased by one pixel point after the first coordinate corresponding pixel point, and the gain value of the added pixel point is the gain value of the corresponding pixel point of the first coordinate.
  • the gain fine granularity is sequentially increased, or the gain fine granularity is decreased by one pixel point before the second coordinate corresponding pixel point, and the gain value of the added pixel point is sequentially decreased by the gain value of the pixel corresponding to the second coordinate, and the gain fine granularity is sequentially decreased.
  • the number of added pixels may also be other values, for example, the number of added pixels is half of the difference.
  • the gain value of a certain pixel point reaches the gain value of the pixel corresponding to the second coordinate
  • the gain value of the pixel point between the pixel point and the second coordinate is set.
  • the second coordinate corresponding to the gain value of the pixel when the pixel point is added after the second coordinate corresponding pixel point, if the gain value of a certain pixel point reaches the gain value of the pixel corresponding to the first coordinate, the pixel point and The gain values of the pixel points between the first coordinates are all set to the gain values of the corresponding pixels of the first coordinates.
  • the pixel corresponding to the first coordinate and the second coordinate in the transparent layer may be directly covered, and the gain of the pixel of the first coordinate in the transparent layer is the pixel of the first coordinate in the image to be processed.
  • the gain value of the point and the gain value of the pixel corresponding to the second coordinate are the gain values of the pixel points of the second coordinate in the image to be processed.
  • the coordinates of the adjacent two pixel points include a first coordinate and a second coordinate
  • the television may directly add a pixel directly between the first coordinate and the second coordinate of the transparent layer. a point, wherein the number of added pixels is half of the difference, and the gain of the added pixel is the gain mean.
  • the television uniformly adds a pixel point between the first coordinate and the second coordinate of the transparent layer, wherein the gain value of the added pixel point is a gain average of the gain values of the adjacent two pixel points, and the added pixel
  • the point is evenly distributed between the first coordinate and the second coordinate, and the distribution direction of the pixel points is obtained by sequentially obtaining the gain values of the adjacent two pixel points.
  • the pixels of the image are expressed according to the width * height, specifically It refers to the number of pixels included in each row (width) of the image and the number of pixels included in each column (height).
  • the order of obtaining the gain values of two adjacent pixels in sequence is in the direction of the row.
  • the added pixel points are evenly distributed in the direction of the row between the first coordinate and the second coordinate, and the added pixels are obtained when the order of obtaining the gain values of the adjacent two pixels in sequence is obtained according to the direction of the column. Between the first coordinate and the second coordinate, the direction is uniformly distributed according to the direction of the column.
  • the number of added pixels can be set according to requirements. Preferably, the number of added pixels can be set to half of the difference, for example, in two. When the adjacent pixels are 210 and 218, the number of added pixels is 4.
  • the number of added pixels is one half of the difference minus one, and the added value of the pixel is increased by a smaller gain value of the adjacent two pixels. Gain value.
  • the gain value of the added pixel point increases the preset gain value sequentially by the smaller gain value of the adjacent two pixel points, and the number of added pixel points is half of the difference minus 1
  • the gain value is set to 2.
  • the number of added pixel points is 3
  • the gain values of the pixel points are 212, 214, and 216, respectively.
  • the value is an odd number, for example, when two adjacent pixels are 210 and 217, the number of added pixels is 3, and the gain values of the pixels are 212, 214, and 216, respectively.
  • the gain value of the pixel in the image to be processed is in the first preset range (for example, 0 to 85)
  • the number of pixels is greater than a preset threshold
  • the gain value of the pixel in the image to be processed is at the same time.
  • the number of pixels in the second preset range (for example, 170 to 255) is greater than a preset threshold, and may be added to the first transparent layer and the second transparent layer respectively based on the gain value of the pixel of the image to be processed.
  • the preset threshold includes a first preset threshold and a second preset threshold.
  • the gain value of the pixel in the image to be processed is greater than a preset threshold in the first preset range, Obtaining the coordinates and gain mean values of two adjacent pixel points based on the difference between the gain values of the adjacent two pixel points obtained each time is greater than the first preset threshold value, based on the coordinates, difference, and gain of the adjacent two pixel points
  • the mean value adds a pixel point in the first transparent layer; when the gain value of the pixel point in the image to be processed is greater than the preset threshold value in the second preset range, the adjacent two pixels are acquired each time
  • the difference between the point gain values is greater than the second pre-
  • the threshold value, and obtaining the coordinates of adjacent two pixels of the average gain a difference mean value and added gain of the second transparent layer pixel based coordinates two adjacent pixels.
  • the base when the difference between the gain values of the adjacent two pixel points acquired each time is greater than the first preset difference value, the base obtains the gain fine granularity of the adjacent two pixel points, and then based on the first coordinate Calculating a gain value of the pixel to be added corresponding to the gain value of the corresponding pixel point, the difference value, and the gain fine particle size, and then based on the gain value of the pixel to be added and the difference value in the transparent layer
  • the pixel points are uniformly added between the first coordinate and the second coordinate; the pixel points are accurately added in the transparent layer according to the coordinates, the difference and the gain mean of the adjacent two pixel points, thereby further improving the image quality of the non-HDR image. , the sharpness of the color details of the image and the visual effect of the user watching non-HDR video programs.
  • step S51 includes:
  • Step S511 when the difference between the gain values of the adjacent two pixel points is greater than the first preset difference value, the pitch of the adjacent two pixel points is calculated based on the coordinates of the adjacent two pixel points;
  • the first preset difference value may be set to 2, 4, 10, etc.
  • the difference between the gain values of two adjacent pixel points refers to the absolute value of the result obtained by subtracting the gain values of two adjacent pixel points.
  • the television acquires coordinates of two adjacent pixel points, and calculates a distance between two adjacent pixel points according to the acquired coordinates, for example, the acquired coordinates are respectively (3) , 2), (5, 2), the spacing between two adjacent pixels is 2.
  • step S512 when the pitch is smaller than the preset interval, the gain fine granularity of the adjacent two pixel points is acquired.
  • the preset spacing may be set according to the size of the television screen.
  • the spacing between two adjacent pixels is greater than or equal to the design spacing according to the acquired coordinates, the adjacent two pixels are too far apart, for example, The two adjacent pixels are in different columns or rows, or are not in adjacent columns or rows, so there is no need to add pixels between adjacent pixels.
  • the television may obtain the total number of pixels of each row or column of the image to be processed.
  • the difference is greater than a preset number, the pixel is not added, and the preset number may be It is 1/10, 1/8, etc. of the total number.
  • the distance between the adjacent two pixel points is calculated based on the coordinates of the adjacent two pixel points. Then, when the spacing is less than the preset spacing, the gain fine granularity of the adjacent two pixel points is obtained, and the pixel points are uniformly added in the transparent layer when the spacing is smaller than the preset spacing, thereby avoiding the spacing being greater than or Equal to the preset spacing, adding unnecessary pixels in the transparent layer affects the video playing efficiency, improving the efficiency of adding pixels in the transparent layer, and further improving the user's vision of watching non-HDR video programs. effect.
  • step S50 includes:
  • Step S54 determining, when the difference between the gain values of the adjacent two pixel points is greater than the first preset difference value, determining whether the difference is greater than the second preset difference value;
  • the difference between the gain values of two adjacent pixel points refers to the absolute value of the result obtained by subtracting the gain values of two adjacent pixel points, and the first preset difference value is used to determine whether it is necessary to increase the pixel point.
  • the difference can be set to 2, 4, 10, etc., because the difference between the gain values of two adjacent pixels is too large, the pixel with the same gain value will affect the image quality and image color details of the non-HDR image.
  • the clarity of the second preset difference is used to determine whether the difference between the gain values of the two adjacent pixels is too large.
  • the second preset difference may be set to a value of 10, 15, or 20. Larger gain value.
  • Step S55 when the difference is greater than the second preset difference, obtaining a fine granularity of the gain corresponding to the difference;
  • the gain fine granularity is a gain change value of a pixel added between adjacent two pixel points.
  • the television stores a plurality of difference ranges, for example, (0, 5), (6, 10), (30, 100), etc., for each difference range, there is a corresponding fine-grained granularity. Therefore, when the difference is greater than the second preset difference, the television can obtain the gain corresponding to the difference range to which the difference belongs. Fine grain size.
  • Step S56 calculating a gain value of the pixel to be added based on the gain value of the pixel corresponding to the first coordinate and the fine granularity of the gain;
  • the gain value of the pixel to be added is subtracted from the gain value of the pixel corresponding to the first coordinate.
  • the gain is fine-grained.
  • the gain value of the pixel to be added is increased by the gain value of the pixel corresponding to the first coordinate. The gain is fine-grained.
  • the gain value of the pixel to be added is the pixel corresponding to the second coordinate.
  • the gain value sequentially increases the gain fine granularity.
  • the gain value of the pixel to be added is the pixel corresponding to the second coordinate. The gain value in turn reduces the fine-grained gain.
  • Step S57 uniformly adding pixel points between the first coordinate and the second coordinate of the transparent layer based on the gain value of the pixel to be added and the difference.
  • the number of added pixels is the difference divided by the fine granularity of the gain.
  • the difference is divided by the integer of the fine-grained gain as the number of added pixels.
  • the pixel points may be sequentially added after the pixel corresponding to the first coordinate, and the gain value of the added pixel point is the gain value of the pixel corresponding to the first coordinate, and the gain fine granularity is sequentially subtracted, or in the second
  • the gain fine granularity is decreased by one pixel point, and the gain value of the added pixel point is sequentially increased by the gain value of the corresponding pixel point of the second coordinate; when the difference is negative, the first coordinate corresponds to the pixel point.
  • the gain fine grain size may be sequentially decreased by one pixel point after the first coordinate corresponding pixel point, and the gain value of the added pixel point is the gain value of the corresponding pixel point of the first coordinate.
  • the gain fine granularity is sequentially increased, or the gain fine granularity is decreased by one pixel point before the second coordinate corresponding pixel point, and the gain value of the added pixel point is sequentially decreased by the gain value of the pixel corresponding to the second coordinate, and the gain fine granularity is sequentially decreased.
  • the number of added pixels may also be other values, for example, the number of added pixels is half of the difference.
  • the gain value of a certain pixel point reaches the gain value of the pixel corresponding to the second coordinate
  • the gain value of the pixel point between the pixel point and the second coordinate is set.
  • the second coordinate corresponding to the gain value of the pixel when the pixel point is added after the second coordinate corresponding pixel point, if the gain value of a certain pixel point reaches the gain value of the pixel corresponding to the first coordinate, the pixel point and The gain values of the pixel points between the first coordinates are all set to the gain values of the corresponding pixels of the first coordinates.
  • the pixel corresponding to the first coordinate and the second coordinate in the transparent layer may be directly covered, and the gain of the pixel of the first coordinate in the transparent layer is the pixel of the first coordinate in the image to be processed.
  • the gain value of the point and the gain value of the pixel corresponding to the second coordinate are the gain values of the pixel points of the second coordinate in the image to be processed.
  • the video playback control method further includes: when the difference is greater than the second preset difference, acquiring a gain average of two adjacent pixels, that is, the television calculates the adjacent two according to the acquired coordinates.
  • the spacing of the pixels for example, when the acquired coordinates are (2, 3), (2, 5), the spacing between two adjacent pixels is 2; the gain increment value is calculated based on the spacing and the difference
  • the gain values of two adjacent pixel points are 200, 220, and the coordinates of two adjacent pixel points are (3, 2), (5, 2), respectively, the gain values of two adjacent pixel points are The difference is 20, the spacing between two adjacent pixels is 2, and the gain increment value is calculated based on the spacing and the difference, specifically, the difference between the gain values of two adjacent pixels is divided by two adjacent pixels.
  • the spacing is obtained as a gain increment value, that is, the obtained gain increment value is 10; the gain value based on the adjacent two pixel points and the gain increment value are uniformly added between the first coordinate and the second coordinate of the transparent layer a pixel, wherein the number of added pixels is the pitch
  • the gain value of the added pixel point increases the gain increment value sequentially by the smaller gain value of the adjacent two pixel points, for example, the gain value of the adjacent two pixel points is 200, 220, and two adjacent pixels
  • the coordinates of the points are (3, 2) and (7, 2), the difference between the gain values of the adjacent two pixels is 20, the pitch is 4, the gain increment value is 5, and the number of added pixels is 3.
  • the added pixel points have gain values of 205, 210, and 215, and the added pixel points are sequentially added from the smaller gain values of the adjacent two pixel points to the larger gain values.
  • the difference between the gain values of the adjacent two pixel points acquired each time is greater than the first preset difference value
  • the second preset difference adds pixels in the transparent layer according to the spacing, and by adding the pixel points with increasing gain values, the image quality of the non-HDR image and the sharpness of the image color details are further improved, and the user is prevented from watching the non-HDR video.
  • the visual effect of the show
  • FIG. 5 is a schematic diagram of functional modules of a first embodiment of a video playback control apparatus according to the present invention.
  • the video playback control apparatus includes:
  • the first obtaining module 10 is configured to acquire a to-be-processed image of the current video program when the image of the video program played on the television display interface is a non-high dynamic range HDR image;
  • the first acquisition module 10 acquires the to-be-processed image of the current video program, when the detected image is a non-high dynamic range HDR image.
  • the first acquiring module 10 may periodically acquire the to-be-processed image of the current video program.
  • the time interval for acquiring the image to be processed of the current video program may be 10 ms, 15 ms, etc. It is ensured that each frame of the image is subjected to subsequent processing.
  • the first obtaining module 10 can directly obtain the image information to be played in the video code stream corresponding to the video program received by the first acquisition module 10, or directly obtain the image displayed on the display interface. In this embodiment, the first acquiring module 10 directly acquires an image displayed on the display interface.
  • a determining module 20 configured to determine whether a gain value of the pixel of the image to be processed meets a preset condition
  • each pixel of the image to be processed is represented by three basic color channels of R/G/B (Red/Green/Blue, red/green/blue), and the determining module 20 acquires the RGB of the pixel of the image to be processed.
  • the R gain value is selected as the gain value to be adjusted, and then it is determined whether the R gain value of the pixel of the image to be processed satisfies a preset condition.
  • G can also be selected.
  • Gain value or B gain value The selection of the gain value to be adjusted in the RGB gain value may be selected according to the RGB gain value of the pixel of the image to be processed. For example, the reddish image to be processed may select the R gain value as the to-be-adjusted gain value, and is greenish.
  • the G gain value can be selected as the gain value to be adjusted, and the blue image to be processed can be selected as the gain value to be adjusted.
  • the preset condition includes that the gain value of the pixel in the image to be processed is within a preset range (the preset range includes the first preset range and the second preset range), and the number of pixels is greater than a preset threshold, that is, When the number of the pixels whose gain value is within the preset range is greater than the preset threshold, the gain value of the pixel of the image to be processed satisfies a preset condition.
  • the preset threshold is determined according to the total number of pixels in the image to be processed. In general, the preset threshold may be set to 1/3 of the total number of pixels in the image to be processed, and the R gain.
  • the value range of the value is 0 ⁇ 255.
  • the pixel in the first preset range is a dark pixel. Since the gain value of the pixel is less than 1/3 of the gain value range, that is, the pixel gain value is less than 85, the gain value is smaller. The small color is very dark, and the step display cannot be realized, which does not reflect the strong sense of clarity. Therefore, the first preset range can be any one of 0 to 85, 0 to 100, or 85 to 128, and the maximum gain is less than 128. range. Preferably, the first preset range is 1/3 ⁇ 1/2 of the gain value range, and specifically may be 85 ⁇ 128.
  • the second preset range may be any range of the gain minimum value greater than 128, such as 170 ⁇ 255, 128 ⁇ 255 or 170 ⁇ 240, and the pixel points belonging to the second preset range are bright pixel points.
  • the second preset range is 2/3 ⁇ 1 of the gain value range, such as 170 ⁇ 255.
  • the adding module 30 is configured to add a transparent layer above the display layer of the image to be processed when the gain value of the pixel of the image to be processed satisfies a preset condition;
  • the transparent layer and the pixel coordinates of the image to be processed are all transparent pixels, so that the newly added transparent layer affects the display of the image to be processed.
  • the second obtaining module 40 sequentially acquires gain values of adjacent two pixel points in the pixel points whose gain values satisfy the preset condition, based on the coordinates of the respective pixel points in the image to be processed;
  • the obtained gain value is a gain value of two pixel points adjacent to the coordinates of the pixel in the same preset range in the preset condition;
  • the adding module 50 is configured to: when the difference between the gain values of the adjacent two pixel points acquired each time is greater than the first preset difference value, based on the gain values, difference values, and coordinates of the adjacent two pixel points Add pixels to the transparent layer.
  • the adding module 50 adds a pixel point at a position corresponding to the coordinate between the transparent layer and the adjacent two pixel coordinates of the image to be processed, wherein the gain value of the pixel is the average value of the gain, in general, The number of pixels is not greater than the difference.
  • the determining module 20 is further configured to determine whether the number of pixels in the preset range of the gain value is greater than a preset threshold, wherein the pixel whose gain value is within a preset range When the number of points is greater than a preset threshold, the gain value of the pixel of the image to be processed satisfies a preset condition.
  • the number of displayed pixels is increased, and the transparent layer is prevented from affecting the display of the image to be processed, and the image quality of the non-HDR image and the color detail of the image are improved.
  • Degree which improves the user's visual effect of watching non-HDR video programs and improves the user experience.
  • a second embodiment of the video playback control apparatus of the present invention is proposed based on the first embodiment.
  • the coordinates of the adjacent two pixel points include a first coordinate and a second coordinate
  • the adding module 50 is added.
  • the first obtaining unit 51 is configured to acquire the fine granularity of the gain of the adjacent two pixels when the difference between the gain values of the adjacent two pixel points acquired is greater than the first preset difference value;
  • the first calculating unit 52 is configured to calculate a gain value of the pixel to be added based on the gain value of the pixel corresponding to the first coordinate and the fine granularity of the gain;
  • the first adding unit 53 is configured to uniformly add a pixel point between the first coordinate and the second coordinate of the transparent layer based on the gain value of the pixel to be added and the difference.
  • the pixel points are accurately added in the transparent layer according to the coordinates, the difference, and the gain mean of the adjacent two pixel points, thereby further improving the image quality of the non-HDR image, the clarity of the image color details, and the user viewing non- The visual effect of HDR video programs.
  • the first obtaining unit 51 includes:
  • the calculating sub-unit 511 is configured to calculate adjacent two pixel points based on coordinates of two adjacent pixel points when the difference between the gain values of the adjacent two pixel points acquired each time is greater than the first preset difference value Pitch;
  • the obtaining sub-unit 512 is configured to obtain the gain fine-grained granularity of two adjacent pixels when the spacing is less than the preset spacing.
  • the television may obtain the total number of pixels of each row or column of the image to be processed.
  • the difference is greater than a preset number, the pixel is not added, and the preset number may be It is 1/10, 1/8, etc. of the total number.
  • the pixel points are uniformly added in the transparent layer when the spacing is less than the preset spacing, thereby avoiding adding unnecessary pixel points in the transparent layer when the spacing is greater than or equal to the preset spacing.
  • the problem of video playback efficiency improves the efficiency of adding pixels in a transparent layer, further improving the visual effect of users watching non-HDR video programs.
  • a fourth embodiment of the video playback control apparatus of the present invention is proposed based on the first embodiment.
  • the coordinates of the adjacent two pixel points include a first coordinate and a second coordinate
  • the adding Module 50 includes:
  • the determining unit 54 is configured to determine whether the difference is greater than the second preset difference value when the difference between the gain values of the adjacent two pixel points acquired each time is greater than the first preset difference value;
  • the second obtaining unit 55 is configured to acquire, when the difference is greater than the second preset difference, the fine granularity of the gain corresponding to the difference;
  • the second calculating unit 56 is configured to calculate a gain value of the pixel to be added based on the gain value of the pixel corresponding to the first coordinate and the fine granularity of the gain;
  • the second adding unit 57 is configured to uniformly add a pixel point between the first coordinate and the second coordinate of the transparent layer based on the gain value of the pixel to be added and the difference.
  • the difference when the difference is greater than the second preset difference, adding a pixel point in the transparent layer according to the spacing, and adding the pixel point whose gain value is increased, the image quality of the non-HDR image and the image color detail are further improved.
  • the clarity of the viewer enhances the visual effect of the user watching non-HDR video programs.

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Abstract

本发明公开了一种视频播放控制方法，包括：在电视显示界面播放的视频节目的图像为非高动态范围HDR图像时，获取当前视频节目的待处理图像；确定待处理图像像素点的增益值是否满足预设条件；在待处理图像像素点的增益值满足预设条件时，在待处理图像的显示图层上方增加透明图层；依次获取增益值满足预设条件的像素点中相邻两个像素点的增益值；在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的增益值、差值及坐标在透明图层中添加像素点。本发明还公开了一种视频播放控制装置。本发明提高了非HDR图像的画质以及图像颜色细节的清晰度，进而提高了用户观看非HDR视频节目的视觉效果。

Description

视频播放控制方法及装置
技术领域
本发明涉及图像处理技术领域，尤其涉及一种视频播放控制方法及装置。
背景技术
目前，随着智能电视发展，HDR（High-Dynamic Range，高动态范围）技术逐渐应用于视频节目中，使得智能电视播放HDR视频节目时的画质更加清晰。
目前，仍然存在大量的非HDR的视频节目，由于非HDR的视频节目的像素较低等，在智能电视播放非HDR的视频节目时，导致非HDR的视频节目的画质较差，进而影响观看节目的视觉效果。
发明内容
本发明提供一种视频播放控制方法及装置，旨在解决智能电视播放非HDR视频节目的画质差的技术问题。
为实现上述目的，本发明提供的一种视频播放控制方法，所述视频播放控制方法包括以下步骤：
在电视显示界面播放的视频节目的图像为非高动态范围HDR图像时，获取所述当前视频节目的待处理图像；
确定所述待处理图像像素点的增益值在预设范围内的像素点个数是否大于预设阈值；
在所述增益值在预设范围内的像素点个数大于预设阈值时，在所述待处理图像的显示图层上方增加透明图层；
基于待处理图像中各个像素点的坐标依次获取增益值满足预设条件的像素点中相邻两个像素点的增益值；
在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，获取相邻两个像素点的增益细粒度，其中所述相邻两个像素点的坐标包括第一坐标及第二坐标；
基于所述第一坐标对应像素点的增益值及所述增益细粒度计算得到待添加像素点的增益值；
基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点。
优选地，所述在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，获取相邻两个像素点的增益细粒度的步骤包括：
在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的坐标计算得到相邻两个像素点的间距；
在所述间距小于预设间距时，获取相邻两个像素点的增益细粒度。
此外，为实现上述目的，本发明还提供一种视频播放控制方法，所述视频播放控制方法包括以下步骤：
在电视显示界面播放的视频节目的图像为非高动态范围HDR图像时，获取所述当前视频节目的待处理图像；
确定所述待处理图像像素点的增益值是否满足预设条件；
在所述待处理图像像素点的增益值满足预设条件时，在所述待处理图像的显示图层上方增加透明图层；
基于待处理图像中各个像素点的坐标依次获取增益值满足预设条件的像素点中相邻两个像素点的增益值；
在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的增益值、差值及坐标在所述透明图层中添加像素点。
优选地，所述确定所述待处理图像像素点的增益值是否满足预设条件的步骤包括：
确定所述增益值在预设范围内的像素点个数是否大于预设阈值，其中，在所述增益值在预设范围内的像素点个数大于预设阈值时，所述待处理图像像素点的增益值满足预设条件。
优选地，所述相邻两个像素点的坐标包括第一坐标及第二坐标，所述在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的增益值、差值及坐标在所述透明图层中添加像素点的步骤包括：
在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，获取相邻两个像素点的增益细粒度；
基于所述第一坐标对应像素点的增益值及所述增益细粒度计算得到待添加像素点的增益值；
基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点。
优选地，所述在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，获取相邻两个像素点的增益细粒度的步骤包括：
在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的坐标计算得到相邻两个像素点的间距；
在所述间距小于预设间距时，获取相邻两个像素点的增益细粒度。
优选地，所述相邻两个像素点的坐标包括第一坐标及第二坐标，所述在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的增益值、差值及坐标在所述透明图层中添加像素点的步骤包括：
在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，确定所述差值是否大于第二预设差值；
在所述差值大于第二预设差值时，获取所述差值对应的增益细粒度；
基于所述第一坐标对应像素点的增益值、所述差值及所述增益细粒度计算得到待添加像素点的增益值；
基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点。
此外，为实现上述目的，本发明还提供一种视频播放控制装置，所述视频播放控制装置包括：
第一获取模块，用于在电视显示界面播放的视频节目的图像为非高动态范围HDR图像时，获取所述当前视频节目的待处理图像；
确定模块，用于确定所述待处理图像像素点的增益值是否满足预设条件；
增加模块，用于在所述待处理图像像素点的增益值满足预设条件时，在所述待处理图像的显示图层上方增加透明图层；
第二获取模块，用于基于待处理图像中各个像素点的坐标依次获取增益值满足预设条件的像素点中相邻两个像素点的增益值；
添加模块，用于在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的增益值、差值及坐标在所述透明图层中添加像素点。
本发明通过在电视显示界面播放的视频节目的图像为非HDR图像时，获取所述当前视频节目的待处理图像，接着确定所述待处理图像像素点的增益值是否满足预设条件，然后在所述待处理图像像素点的增益值满足预设条件时，在所述待处理图像的显示图层上方增加透明图层，接着基于待处理图像中各个像素点的坐标依次获取增益值满足预设条件的像素点中相邻两个像素点的增益值，最后在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的增益值、差值及坐标在所述透明图层中添加像素点，通过在新增加的透明图层添加像素点增加了显示的像素点的数量，并能够避免透明图层影响待处理图像的显示，提高了非HDR图像的画质以及图像颜色细节的清晰度，进而提高了用户观看非HDR视频节目的视觉效果，提高了用户体验。
附图说明
图1为本发明视频播放控制方法第一实施例的流程示意图；
图2为本发明视频播放控制方法第二实施例中在透明图层中添加像素点步骤的细化流程示意图；
图3为本发明视频播放控制方法第三实施例中获取增益均值步骤的细化流程示意图；
图4为本发明视频播放控制方法第四实施例中在透明图层中添加像素点步骤的细化流程示意图；
图5为本发明视频播放控制装置第一实施例的功能模块示意图；
图6为本发明视频播放控制装置第二实施例中添加模块的细化功能模块示意图；
图7为本发明视频播放控制装置第三实施例中第一获取单元的细化功能模块示意图；
图8为本发明视频播放控制装置第四实施例中添加模块的细化功能模块示意图。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明提供一种视频播放控制方法。参照图1，图1为本发明视频播放控制方法第一实施例的流程示意图。
在本实施例中，该视频播放控制方法包括：
步骤S10，在电视显示界面播放的视频节目的图像为非高动态范围HDR图像时，获取所述当前视频节目的待处理图像；
其中，电视实时侦测其显示界面播放的视频节目的图像，并在侦测到的图像为非高动态范围HDR图像时，获取所述当前视频节目的待处理图像。优选地，本实施例中，电视可以定时获取所述当前视频节目的待处理图像，例如，定时获取所述当前视频节目的待处理图像的时间间隔可以为10ms、15ms等，以保证对每一帧图像均进行后续的处理，另外，电视可以直接在其接收到的视频节目对应的视频码流中获取即将播放的图片信息，或者直接获取显示界面显示的图像，本实施例中，电视直接获取其显示界面显示的图像。
步骤S20，确定所述待处理图像像素点的增益值是否满足预设条件；
本实施例中，待处理图像的每一个像素点通过R/G/B（Red/Green/Blue，红/绿/蓝）三个基本色通道表示，电视获取待处理图像像素点的RGB增益值，其中，每个像素点的增益值均为N（例如N=8）比特量化，即每一个像素点的R/G/B增益值的数值范围均为0~28-1，然后选取RGB增益值中的某一增益值作为待调整增益值，例如，选取R增益值作为待调整增益值，然后判断待处理图像像素点的R增益值是否满足预设条件，当然，也可以选取G增益值或者B增益值。其中，在RGB增益值中待调整增益值的选择可以根据待处理图像像素点的RGB增益值进行选择，譬如，对于偏红色的待处理图像可以选取R增益值作为待调整增益值，对于偏绿色的待处理图像可以选取G增益值作为待调整增益值，对于偏蓝色的待处理图像可以选取B增益值作为待调整增益值。
其中，预设条件包括待处理图片中像素点的增益值在预设范围内（预设范围包括第一预设范围和第二预设范围）的像素点个数大于预设阈值，即在所述增益值在预设范围内的像素点个数大于预设阈值时，所述待处理图像像素点的增益值满足预设条件。以R增益值为例，预设阈值根据待处理图像中像素点的总个数确定，一般情况下，预设阈值可以设置为待处理图像中像素点的总个数的1/3，R增益值的数值范围为0~255，第一预设范围内的像素点为暗像素点，由于在像素点增益值位于增益值范围的1/3以下即像素点增益值小于85时，增益值较小的颜色非常暗，无法实现分阶显示，进而体现不了太强的分明感，因此，第一预设范围可以为0~85、0~100或者85~128等增益最大值小于128的任一范围。优选的，第一预设范围为增益值范围的1/3~1/2，具体可以是85~128。类似的，第二预设范围可以为170~255、128~255或170~240等增益最小值大于128的任一范围，属于第二预设范围内的像素点为亮像素点。优选的，第二预设范围为增益值范围的2/3~1，比如170~255。
步骤S30，在所述待处理图像像素点的增益值满足预设条件时，在所述待处理图像的显示图层上方增加透明图层；
其中，该透明图层与待处理图像的像素点坐标相同的位置均为透明的像素点，以避免新增的透明图层影响待处理图像的显示。
步骤S40，基于待处理图像中各个像素点的坐标依次获取增益值满足预设条件的像素点中相邻两个像素点的增益值；
其中，获取到的增益值为增益值满足预设条件中同一预设范围的像素点中坐标相邻的两个像素点的增益值。
步骤S50，在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的增益值、差值及坐标在所述透明图层中添加像素点。
本实施例中，电视在透明图层与待处理图像的相邻两个像素点坐标之间对应的位置添加像素点，其中，像素点的增益值为所述增益均值，一般情况下，像素点的个数不大于该差值。
本实施例通过在电视显示界面播放的视频节目的图像为非HDR图像时，获取所述当前视频节目的待处理图像，接着确定所述待处理图像像素点的增益值是否满足预设条件，然后在所述待处理图像像素点的增益值满足预设条件时，在所述待处理图像的显示图层上方增加透明图层，接着基于待处理图像中各个像素点的坐标依次获取增益值满足预设条件中同一预设范围的像素点中相邻两个像素点的增益值，最后在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的增益值、差值及坐标在所述透明图层中添加像素点，通过在新增加的透明图层添加像素点增加了显示的像素点的数量，并能够避免透明图层影响待处理图像的显示，提高了非HDR图像的画质以及图像颜色细节的清晰度，进而提高了用户观看非HDR视频节目的视觉效果，提高了用户体验。
基于第一实施例提出本发明视频播放控制方法的第二实施例，参照图2，在本实施例中，相邻两个像素点的坐标包括第一坐标及第二坐标，步骤S50包括：
步骤S51，在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，获取相邻两个像素点的增益细粒度；
本实施例中，第一预设差值可以设置为2、4、10等，相邻两个像素点增益值的差值是指相邻两个像素点增益值相减得到的结果的绝对值，在该差值大于第一预设差值时，电视获取相邻两个像素点的坐标及增益细粒度，其中，增益细粒度为相邻两个像素点之间添加的像素点的增益变化值。
步骤S52，基于所述第一坐标对应像素点的增益值及所述增益细粒度计算得到待添加像素点的增益值；
其中，在差值为正数、第一坐标对应像素点的增益值大于第二坐标对应像素点的增益值时，待添加像素点的增益值为第一坐标对应像素点的增益值依次减去增益细粒度，在差值为负数、第一坐标对应像素点的增益值小于第二坐标对应像素点的增益值时，待添加像素点的增益值为第一坐标对应像素点的增益值依次增加增益细粒度，当然，也可以在差值为正数、第一坐标对应像素点的增益值大于第二坐标对应像素点的增益值时，待添加像素点的增益值为第二坐标对应像素点的增益值依次增加增益细粒度，在差值为负数、第一坐标对应像素点的增益值小于第二坐标对应像素点的增益值时，待添加像素点的增益值为第二坐标对应像素点的增益值依次减少增益细粒度。
步骤S53，基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点。
其中，添加的像素点的个数为差值除以增益细粒度，一般情况下，取差值除以增益细粒度的整数为添加的像素点的个数。在差值为正数时，可以在第一坐标对应像素点之后依次增加像素点，添加像素点的增益值为第一坐标对应像素点的增益值依次减去增益细粒度，或者，在第二坐标对应像素点之前依次增加增益细粒度减一个像素点，添加像素点的增益值为第二坐标对应像素点的增益值依次增加增益细粒度；在差值为负数时，第一坐标对应像素点的增益值小于第二坐标对应像素点的增益值时，可以在第一坐标对应像素点之后依次增加增益细粒度减一个像素点，添加像素点的增益值为第一坐标对应像素点的增益值依次增加增益细粒度，或者，在第二坐标对应像素点之前依次增加增益细粒度减一个像素点，添加像素点的增益值为第二坐标对应像素点的增益值依次减少增益细粒度，本实施例中，添加的像素点的个数也可以为其他值，例如添加的像素点的个数为差值的一半，在第一坐标对应像素点之后增加像素点时，若某一像素点的增益值达到第二坐标对应像素点的增益值，则将该像素点及第二坐标之间的像素点的增益值均设置为第二坐标对应像素点的增益值，在第二坐标对应像素点之后增加像素点时，若某一像素点的增益值达到第一坐标对应像素点的增益值，则将该像素点及与第一坐标之间的像素点的增益值均设置为第一坐标对应像素点的增益值。当然，本实施例中，也可以直接覆盖透明图层中第一坐标及第二坐标对应的像素点，透明图层中第一坐标的像素点的增益值为待处理图像中第一坐标的像素点的增益值、第二坐标对应的像素点的增益值为待处理图像中第二坐标的像素点的增益值。
进一步地，在其他实施例中，所述相邻两个像素点的坐标包括第一坐标及第二坐标，电视可以直接在所述透明图层的第一坐标及第二坐标之间均匀添加像素点，其中，添加的像素点的个数为所述差值的一半，添加的像素点的增益值为所述增益均值。
本实施例中，电视在透明图层的第一坐标及第二坐标之间均匀添加像素点，其中，添加的像素点的增益值为相邻两个像素点增益值的增益均值，添加的像素点在第一坐标及第二坐标之间均匀分布，像素点的分布方向按照依次获取相邻两个像素点的增益值的方向，譬如，一般情况下，图像的像素按照宽*高表示，具体是指该图片每一行（宽）所包含的像素点个数以及每一列（高）所包含的像素点的个数，在依次获取相邻两个像素点的增益值的顺序是按照行的方向获取时，添加的像素点在第一坐标及第二坐标之间按照行的方向均匀分布，在依次获取相邻两个像素点的增益值的顺序是按照列的方向获取时，添加的像素点在第一坐标及第二坐标之间按照列的方向均匀分布，在相邻两个像素点位于不同的两行/列时，可以在透明图层的其中一行（列）的后面及下一行（列）的前面增加相应的像素点，当然，也可以不增加该位置的像素点。容易理解，也可以不均匀分布，一般情况下，添加的像素点的个数可以根据需求自行设定，优选地，添加的像素点的个数可以设置为差值的一半，例如，在两个相邻的像素分别为210、218时，添加的像素点的个数为4。
进一步地，在其他实施例中，添加的像素点的个数为所述差值的一半减一，添加的像素点的增益值为相邻两个像素点中的较小增益值依次增加预设增益值。
本实施例中，添加的像素点的增益值为相邻两个像素点中的较小增益值依次增加预设增益值，添加的像素点的个数为所述差值的一半减1，预优选地，设增益值为2，例如，在两个相邻的像素分别为210、218时，添加的像素点的个数为3，像素点的增益值分别为212、214、216，在差值为奇数时，例如，在两个相邻的像素分别为210、217时，添加的像素点的个数为3，像素点的增益值分别为212、214、216。
本实施例中，若待处理图像中像素点的增益值在第一预设范围（例如，0~85）的像素点个数大于预设阈值，且同时待处理图像中像素点的增益值在第二预设范围（例如，170~255）的像素点个数大于预设阈值，则可以分别基于所述待处理图像像素点的增益值在第一透明图层及第二透明图层中添加像素点，具体的，预设阈值包括第一预设阈值以及第二预设阈值，在待处理图像中像素点的增益值在第一预设范围的像素点个数大于预设阈值时，在每次获取到的相邻两个像素点增益值的差值大于第一预设阈值时，获取相邻两个像素点的坐标及增益均值，基于相邻两个像素点坐标、差值及增益均值在第一透明图层中添加像素点；在待处理图像中像素点的增益值在第二预设范围的像素点个数大于预设阈值时，在每次获取到的相邻两个像素点增益值的差值大于第二预设阈值时，获取相邻两个像素点的坐标及增益均值，基于相邻两个像素点坐标、差值及增益均值在第二透明图层中添加像素点。
本实施例通过在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基获取相邻两个像素点的增益细粒度，接着基于所述第一坐标对应像素点的增益值、所述差值及所述增益细粒度计算得到待添加像素点的增益值，然后基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点；实现了根据相邻两个像素点坐标、差值及增益均值在透明图层中准确的添加像素点，进一步提高了非HDR图像的画质、图像颜色细节的清晰度以及用户观看非HDR视频节目的视觉效果。
基于第二实施例提出本发明视频播放控制方法的第三实施例。参照图3，在本实施例中，步骤S51包括：
步骤S511，在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的坐标计算得到相邻两个像素点的间距；
本实施例中，第一预设差值可以设置为2、4、10等，相邻两个像素点增益值的差值是指相邻两个像素点增益值相减得到的结果的绝对值，在该差值大于第一预设差值时，电视获取相邻两个像素点的坐标，并根据获取的坐标计算得到相邻两个像素点的间距，例如，获取的坐标分别为（3，2）、（5，2）时，相邻两个像素点的间距为2。
步骤S512，在所述间距小于预设间距时，获取相邻两个像素点的增益细粒度。
其中，预设间距可以根据电视屏幕的大小进行设定，在根据获取的坐标计算得到相邻两个像素点的间距大于或等于与设计间距时，相邻两个像素点相聚太远，例如相邻两个像素点在不同列或行，或者不在相邻的列或行，因此不需要在相邻两个像素点之间增加像素点。
进一步地，在其他实施例中，电视可以获取待处理图像每一行或列的像素点的总个数，在差值的一半大于预设个数时，则不添加像素点，预设个数可以为总个数的1/10、1/8等值。
本实施例通过在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的坐标计算得到相邻两个像素点的间距，接着在所述间距小于预设间距时，获取相邻两个像素点的增益细粒度，实现了在间距小于预设间距时在所述透明图层中均匀添加像素点，避免了在间距大于或等于预设间距时在所述透明图层中添加不必要的像素点而影响视频播放效率的问题，提高了在透明图层中添加像素点的效率，进一步提高了用户观看非HDR视频节目的视觉效果。
基于第二实施例提出本发明视频播放控制方法的第四实施例。参照图4，在本实施例中，所述相邻两个像素点的坐标包括第一坐标及第二坐标，步骤S50包括：
步骤S54，在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，确定所述差值是否大于第二预设差值；
其中，相邻两个像素点增益值的差值是指相邻两个像素点增益值相减得到的结果的绝对值，第一预设差值用于判断是否需要增加像素点，第一预设差值可以设置为2、4、10等，由于在相邻两个像素点增益值的差值过大时，采用添加增益值相同的像素点会影响非HDR图像的画质以及图像颜色细节的清晰度，因此第二预设差值用于判断相邻两个像素点增益值的差值是否过大，本实施例中，第二预设差值可以设置为10、15、20等数值较大的增益值。
步骤S55，在所述差值大于第二预设差值时，获取所述差值对应的增益细粒度；
其中，增益细粒度为相邻两个像素点之间添加的像素点的增益变化值，本实施例中，电视存储有若干个差值范围，例如（0，5）、（6，10）、（30，100）等，针对每一个差值范围均设有对应的增益细粒度，因此，在差值大于第二预设差值时，电视可以获取该差值所属的差值范围对应的增益细粒度。
步骤S56，基于所述第一坐标对应像素点的增益值及所述增益细粒度计算得到待添加像素点的增益值；
其中，在差值为正数、第一坐标对应像素点的增益值大于第二坐标对应像素点的增益值时，待添加像素点的增益值为第一坐标对应像素点的增益值依次减去增益细粒度，在差值为负数、第一坐标对应像素点的增益值小于第二坐标对应像素点的增益值时，待添加像素点的增益值为第一坐标对应像素点的增益值依次增加增益细粒度，当然，也可以在差值为正数、第一坐标对应像素点的增益值大于第二坐标对应像素点的增益值时，待添加像素点的增益值为第二坐标对应像素点的增益值依次增加增益细粒度，在差值为负数、第一坐标对应像素点的增益值小于第二坐标对应像素点的增益值时，待添加像素点的增益值为第二坐标对应像素点的增益值依次减少增益细粒度。
步骤S57，基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点。
其中，添加的像素点的个数为差值除以增益细粒度，一般情况下，取差值除以增益细粒度的整数为添加的像素点的个数。在差值为正数时，可以在第一坐标对应像素点之后依次增加像素点，添加像素点的增益值为第一坐标对应像素点的增益值依次减去增益细粒度，或者，在第二坐标对应像素点之前依次增加增益细粒度减一个像素点，添加像素点的增益值为第二坐标对应像素点的增益值依次增加增益细粒度；在差值为负数时，第一坐标对应像素点的增益值小于第二坐标对应像素点的增益值时，可以在第一坐标对应像素点之后依次增加增益细粒度减一个像素点，添加像素点的增益值为第一坐标对应像素点的增益值依次增加增益细粒度，或者，在第二坐标对应像素点之前依次增加增益细粒度减一个像素点，添加像素点的增益值为第二坐标对应像素点的增益值依次减少增益细粒度，本实施例中，添加的像素点的个数也可以为其他值，例如添加的像素点的个数为差值的一半，在第一坐标对应像素点之后增加像素点时，若某一像素点的增益值达到第二坐标对应像素点的增益值，则将该像素点及第二坐标之间的像素点的增益值均设置为第二坐标对应像素点的增益值，在第二坐标对应像素点之后增加像素点时，若某一像素点的增益值达到第一坐标对应像素点的增益值，则将该像素点及与第一坐标之间的像素点的增益值均设置为第一坐标对应像素点的增益值。当然，本实施例中，也可以直接覆盖透明图层中第一坐标及第二坐标对应的像素点，透明图层中第一坐标的像素点的增益值为待处理图像中第一坐标的像素点的增益值、第二坐标对应的像素点的增益值为待处理图像中第二坐标的像素点的增益值。
在其他实施例中，该视频播放控制方法还包括：在所述差值大于第二预设差值时，获取相邻两个像素点的增益均值，即电视根据获取的坐标计算得到相邻两个像素点的间距，例如，在获取的坐标分别为（2，3）、（2，5）时，相邻两个像素点的间距为2；基于所述间距及差值计算得到增益递增值，例如，在相邻两个像素点的增益值为200、220、相邻两个像素点的坐标分别为（3，2）、（5，2）时，相邻两个像素点增益值的差值为20、相邻两个像素点的间距为2，基于所述间距及差值计算得到增益递增值具体为将相邻两个像素点增益值的差值除以相邻两个像素点的间距得到增益递增值，即得到的增益递增值为10；基于相邻两个像素点的增益值及所述增益递增值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点，其中，添加的像素点的个数为所述间距减一，添加的像素点的增益值为相邻两个像素点中的较小增益值依次增加增益递增值，例如，在相邻两个像素点的增益值为200、220、相邻两个像素点的坐标分别为（3，2）、（7，2）时，相邻两个像素点增益值的差值为20、间距为4、增益递增值为5，添加像素点的个数为3，添加的像素点的增益值为205、210、215，添加的像素点的顺序为从相邻两个像素点的较小增益值至较大增益值一次递增添加。
本实施例中，通过在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，确定所述差值是否大于第二预设差值，接着在所述差值大于第二预设差值时，获取所述差值对应的增益细粒度，然后基于所述第一坐标对应像素点的增益值、所述差值及所述增益细粒度计算得到待添加像素点的增益值，最后基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点，实现了在差值大于第二预设差值时根据间距在透明图层中添加像素点，通过添加增益值递增的像素点，进一步提高了非HDR图像的画质以及图像颜色细节的清晰度，提高了用户观看非HDR视频节目的视觉效果。
本发明进一步提供一种视频播放控制装置。参照图5，图5为本发明视频播放控制装置第一实施例的功能模块示意图。
在本实施例中，该视频播放控制装置包括：
第一获取模块10，用于在电视显示界面播放的视频节目的图像为非高动态范围HDR图像时，获取所述当前视频节目的待处理图像；
其中，电视实时侦测其显示界面播放的视频节目的图像，并在侦测到的图像为非高动态范围HDR图像时，第一获取模块10获取所述当前视频节目的待处理图像。优选地，本实施例中，第一获取模块10可以定时获取所述当前视频节目的待处理图像，例如，定时获取所述当前视频节目的待处理图像的时间间隔可以为10ms、15ms等，以保证对每一帧图像均进行后续的处理，另外，第一获取模块10可以直接在其接收到的视频节目对应的视频码流中获取即将播放的图片信息，或者直接获取显示界面显示的图像，本实施例中，第一获取模块10直接获取显示界面显示的图像。
确定模块20，用于确定所述待处理图像像素点的增益值是否满足预设条件；
本实施例中，待处理图像的每一个像素点通过R/G/B（Red/Green/Blue，红/绿/蓝）三个基本色通道表示，确定模块20获取待处理图像像素点的RGB增益值，其中，每个像素点的增益值均为N（例如N=8）比特量化，即每一个像素点的R/G/B增益值的数值范围均为0~28-1，然后选取RGB增益值中的某一增益值作为待调整增益值，例如，选取R增益值作为待调整增益值，然后判断待处理图像像素点的R增益值是否满足预设条件，当然，也可以选取G增益值或者B增益值。其中，在RGB增益值中待调整增益值的选择可以根据待处理图像像素点的RGB增益值进行选择，譬如，偏红色的待处理图像，可以选取R增益值作为待调整增益值，偏绿色的待处理图像，可以选取G增益值作为待调整增益值，偏蓝色的待处理图像，可以选取B增益值作为待调整增益值。
其中，预设条件包括待处理图片中像素点的增益值在预设范围内（预设范围包括第一预设范围和第二预设范围）的像素点个数大于预设阈值，即在所述增益值在预设范围内的像素点个数大于预设阈值时，所述待处理图像像素点的增益值满足预设条件。以R增益值为例，预设阈值根据待处理图像中像素点的总个数确定，一般情况下，预设阈值可以设置为待处理图像中像素点的总个数的1/3，R增益值的数值范围为0~255，第一预设范围内的像素点为暗像素点，由于在像素点增益值位于增益值范围的1/3以下即像素点增益值小于85时，增益值较小的颜色非常暗，无法实现分阶显示，进而体现不了太强的分明感，因此，第一预设范围可以为0~85、0~100或者85~128等增益最大值小于128的任一范围。优选的，第一预设范围为增益值范围的1/3~1/2，具体可以是85~128。类似的，第二预设范围可以为170~255、128~255或170~240等增益最小值大于128的任一范围，属于第二预设范围内的像素点为亮像素点。优选的，第二预设范围为增益值范围的2/3~1，比如170~255。
增加模块30，用于在所述待处理图像像素点的增益值满足预设条件时，在所述待处理图像的显示图层上方增加透明图层；
其中，该透明图层与待处理图像的像素点坐标相同的位置均为透明的像素点，以避免新增的透明图层影响待处理图像的显示。
第二获取模块40，基于待处理图像中各个像素点的坐标依次获取增益值满足预设条件的像素点中相邻两个像素点的增益值；
其中，获取到的增益值为增益值满足预设条件中同一预设范围的像素点中坐标相邻的两个像素点的增益值；
添加模块50，用于在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的增益值、差值及坐标在所述透明图层中添加像素点。
本实施例中，添加模块50在透明图层与待处理图像的相邻两个像素点坐标之间对应的位置添加像素点，其中，像素点的增益值为所述增益均值，一般情况下，像素点的个数不大于该差值。
进一步地，在其他实施例中，确定模块20还用于确定所述增益值在预设范围内的像素点个数是否大于预设阈值，其中，在所述增益值在预设范围内的像素点个数大于预设阈值时，所述待处理图像像素点的增益值满足预设条件。
本实施例通过在新增加的透明图层添加像素点增加了显示的像素点的数量，并能够避免透明图层影响待处理图像的显示，提高了非HDR图像的画质以及图像颜色细节的清晰度，进而提高了用户观看非HDR视频节目的视觉效果，提高了用户体验。
基于第一实施例提出本发明视频播放控制装置的第二实施例，参照图6，在本实施例中，所述相邻两个像素点的坐标包括第一坐标及第二坐标，添加模块50包括：
第一获取单元51，用于在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，获取相邻两个像素点的增益细粒度；
第一计算单元52，用于基于所述第一坐标对应像素点的增益值及所述增益细粒度计算得到待添加像素点的增益值；
第一添加单元53，用于基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点。
本实施例实现了根据相邻两个像素点坐标、差值及增益均值在透明图层中准确的添加像素点，进一步提高了非HDR图像的画质、图像颜色细节的清晰度以及用户观看非HDR视频节目的视觉效果。
基于第一实施例提出本发明视频播放控制装置的第三实施例，参照图7，在本实施例中，第一获取单元51包括：
计算子单元511，用于在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的坐标计算得到相邻两个像素点的间距；
获取子单元512，用于在所述间距小于预设间距时，获取相邻两个像素点的增益细粒度。
进一步地，在其他实施例中，电视可以获取待处理图像每一行或列的像素点的总个数，在差值的一半大于预设个数时，则不添加像素点，预设个数可以为总个数的1/10、1/8等值。
本实施例实现了在间距小于预设间距时在所述透明图层中均匀添加像素点，避免了在间距大于或等于预设间距时在所述透明图层中添加不必要的像素点而影响视频播放效率的问题，提高了在透明图层中添加像素点的效率，进一步提高了用户观看非HDR视频节目的视觉效果。
基于第一实施例提出本发明视频播放控制装置的第四实施例，参照图8，在本实施例中，所述相邻两个像素点的坐标包括第一坐标及第二坐标，所述添加模块50包括：
确定单元54，用于在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，确定所述差值是否大于第二预设差值；
第二获取单元55，用于在所述差值大于第二预设差值时，获取所述差值对应的增益细粒度；
第二计算单元56，用于基于所述第一坐标对应像素点的增益值及所述增益细粒度计算得到待添加像素点的增益值；
第二添加单元57，用于基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点。
本实施例中实现了在差值大于第二预设差值时根据间距在透明图层中添加像素点，通过添加增益值递增的像素点，进一步提高了非HDR图像的画质以及图像颜色细节的清晰度，提高了用户观看非HDR视频节目的视觉效果。
上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (12)

  1. 一种视频播放控制方法，其特征在于，所述视频播放控制方法包括以下步骤：
    在电视显示界面播放的视频节目的图像为非高动态范围HDR图像时，获取所述当前视频节目的待处理图像；
    确定所述待处理图像像素点的增益值在预设范围内的像素点个数是否大于预设阈值；
    在所述增益值在预设范围内的像素点个数大于预设阈值时，在所述待处理图像的显示图层上方增加透明图层；
    基于待处理图像中各个像素点的坐标依次获取增益值满足预设条件的像素点中相邻两个像素点的增益值；
    在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，获取相邻两个像素点的增益细粒度，其中所述相邻两个像素点的坐标包括第一坐标及第二坐标；
    基于所述第一坐标对应像素点的增益值及所述增益细粒度计算得到待添加像素点的增益值；
    基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点。
  2. 如权利要求1所述的视频播放控制方法，其特征在于，所述在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，获取相邻两个像素点的增益细粒度的步骤包括：
    在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的坐标计算得到相邻两个像素点的间距；
    在所述间距小于预设间距时，获取相邻两个像素点的增益细粒度。
  3. 一种视频播放控制方法，其特征在于，所述视频播放控制方法包括以下步骤：
    在电视显示界面播放的视频节目的图像为非高动态范围HDR图像时，获取所述当前视频节目的待处理图像；
    确定所述待处理图像像素点的增益值是否满足预设条件；
    在所述待处理图像像素点的增益值满足预设条件时，在所述待处理图像的显示图层上方增加透明图层；
    基于待处理图像中各个像素点的坐标依次获取增益值满足预设条件的像素点中相邻两个像素点的增益值；
    在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的增益值、差值及坐标在所述透明图层中添加像素点。
  4. 如权利要求3所述的视频播放控制方法，其特征在于，所述确定所述待处理图像像素点的增益值是否满足预设条件的步骤包括：
    确定所述增益值在预设范围内的像素点个数是否大于预设阈值，其中，在所述增益值在预设范围内的像素点个数大于预设阈值时，所述待处理图像像素点的增益值满足预设条件。
  5. 如权利要求3所述的视频播放控制方法，其特征在于，所述相邻两个像素点的坐标包括第一坐标及第二坐标，所述在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的增益值、差值及坐标在所述透明图层中添加像素点的步骤包括：
    在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，获取相邻两个像素点的增益细粒度；
    基于所述第一坐标对应像素点的增益值及所述增益细粒度计算得到待添加像素点的增益值；
    基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点。
  6. 如权利要求5所述的视频播放控制方法，其特征在于，所述在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，获取相邻两个像素点的增益细粒度的步骤包括：
    在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的坐标计算得到相邻两个像素点的间距；
    在所述间距小于预设间距时，获取相邻两个像素点的增益细粒度。
  7. 如权利要求3所述的视频播放控制方法，其特征在于，所述相邻两个像素点的坐标包括第一坐标及第二坐标，所述在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的增益值、差值及坐标在所述透明图层中添加像素点的步骤包括：
    在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，确定所述差值是否大于第二预设差值；
    在所述差值大于第二预设差值时，获取所述差值对应的增益细粒度；
    基于所述第一坐标对应像素点的增益值、所述差值及所述增益细粒度计算得到待添加像素点的增益值；
    基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点。
  8. 一种视频播放控制装置，其特征在于，所述视频播放控制装置包括：
    第一获取模块，用于在电视显示界面播放的视频节目的图像为非高动态范围HDR图像时，获取所述当前视频节目的待处理图像；
    确定模块，用于确定所述待处理图像像素点的增益值是否满足预设条件；
    增加模块，用于在所述待处理图像像素点的增益值满足预设条件时，在所述待处理图像的显示图层上方增加透明图层；
    第二获取模块，用于基于待处理图像中各个像素点的坐标依次获取增益值满足预设条件的像素点中相邻两个像素点的增益值；
    添加模块，用于在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的增益值、差值及坐标在所述透明图层中添加像素点。
  9. 如权利要求8所述的视频播放控制装置，其特征在于，所述确定模块还用于确定所述增益值在预设范围内的像素点个数是否大于预设阈值，其中，在所述增益值在预设范围内的像素点个数大于预设阈值时，所述待处理图像像素点的增益值满足预设条件。
  10. 如权利要求8所述的视频播放控制装置，其特征在于，所述相邻两个像素点的坐标包括第一坐标及第二坐标，所述添加模块包括：
    第一获取单元，用于在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，获取相邻两个像素点的增益均值；
    第一计算单元，用于基于所述第一坐标对应像素点的增益值及所述增益细粒度计算得到待添加像素点的增益值；
    第一添加单元，用于基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点。
  11. 如权利要求10所述的视频播放控制装置，其特征在于，所述第一获取单元包括：
    计算子单元，用于在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，基于相邻两个像素点的坐标计算得到相邻两个像素点的间距；
    获取子单元，用于在所述间距小于预设间距时，获取相邻两个像素点的增益细粒度。
  12. 如权利要求8所述的视频播放控制装置，其特征在于，所述相邻两个像素点的坐标包括第一坐标及第二坐标，所述添加模块包括：
    确定单元，用于在每次获取到的相邻两个像素点增益值的差值大于第一预设差值时，确定所述差值是否大于第二预设差值；
    第二获取单元，用于在所述差值大于第二预设差值时，获取所述差值对应的增益细粒度；
    第二计算单元，用于基于所述第一坐标对应像素点的增益值及所述增益细粒度计算得到待添加像素点的增益值；
    第二添加单元，用于基于所述待添加像素点的增益值及所述差值在所述透明图层的第一坐标及第二坐标之间均匀添加像素点。
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