CN110602490B - Method and device for automatically testing reproduction rate and readable storage medium - Google Patents
Method and device for automatically testing reproduction rate and readable storage medium Download PDFInfo
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Abstract
The invention discloses a method, a device and a computer readable storage medium for automatically testing reproduction rate, wherein the method comprises the following steps: inputting an image signal to a television to enable the television to display an image; collecting RGB values and coordinate values of all pixel points of a display image; acquiring the resolution of the image signal, a standard RGB value range, the proportion of standard pixel areas in each direction and the total number of standard pixels, wherein each direction comprises an upper half longitudinal direction, a lower half longitudinal direction, a left half transverse direction and a right half transverse direction; and obtaining the reproduction rate in each direction, the longitudinal total reproduction rate and the transverse total reproduction rate according to the resolution, the standard RGB value range, the RGB value and the coordinate value of each pixel point of the displayed image, the proportion of the standard pixel area in each direction and the total number of the standard pixels. The invention solves the technical problems of low efficiency and poor precision of manual testing of the reproduction rate.
Description
Technical Field
The present invention relates to the field of image testing technologies, and in particular, to a method and an apparatus for automatically testing a reproduction ratio, and a computer-readable storage medium.
Background
The reproduction ratio is the ratio of the image reproduced on the screen of the television set to the image corresponding to the signal transmitted by the television station. When testing the television, because different television signals require different reproduction rates for display and the television also has different reproduction rate requirements, the test and debugging reproduction rate becomes a frequent work with high repetition rate. In the prior art, the reproduction rate is mainly determined by manually reading scales on a fixed screen picture, the method occupies a large amount of time and energy, the measurement efficiency is low, and the precision of the measured reproduction rate is poor.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a method and a device for automatically testing the reproduction ratio and a computer readable storage medium, aiming at solving the technical problems of low efficiency and poor precision of manually testing the reproduction ratio.
In order to achieve the above object, the present application provides a method for automatically testing a reproduction rate, which is applied to an intelligent device, and comprises the steps of:
inputting an image signal to a television to enable the television to display an image;
collecting RGB values and coordinate values of all pixel points of a display image;
acquiring the resolution of the image signal, a standard RGB value range, the proportion of standard pixel areas in each direction and the total number of standard pixels, wherein each direction comprises an upper half longitudinal direction, a lower half longitudinal direction, a left half transverse direction and a right half transverse direction;
and obtaining the reproduction rate in each direction, the longitudinal total reproduction rate and the transverse total reproduction rate according to the resolution, the standard RGB value range, the RGB value and the coordinate value of each pixel point of the displayed image, the proportion of the standard pixel area in each direction and the total number of the standard pixels.
Optionally, the step of obtaining the reproduction rate in each direction, the total longitudinal reproduction rate and the total transverse reproduction rate according to the resolution, the standard RGB value range, the RGB value and the coordinate value of each pixel point of the display image, the proportion of the standard pixel region in each direction, and the total number of the standard pixels includes:
obtaining total pixels in all directions according to the resolution of the image signal;
selecting any row of the display image with the ordinate values of the pixel points all within the preset ordinate range as a row to be tested, and selecting any column of the display image with the abscissa values of the pixel points all within the preset abscissa range as a column to be tested;
respectively taking the upper edge pixel point and the lower edge pixel point in the row to be detected as edge points corresponding to the upper half part longitudinally and the lower half part longitudinally, and respectively taking the left edge pixel point and the right edge pixel point in the row to be detected as edge points corresponding to the left half part transversely and the right half part transversely;
obtaining the total effective difference value and the effective shortest distance corresponding to each direction according to the standard RGB value range, the proportion of the standard pixel region in each direction and the corresponding edge point coordinate value, the RGB value and the longitudinal coordinate value of each pixel point of the row to be detected and the RGB value and the transverse coordinate value of each pixel point of the line to be detected;
and obtaining the reproduction rate, the longitudinal total reproduction rate and the transverse total reproduction rate of each direction according to the total pixels, the proportion of the standard pixel area, the total number of the standard pixels, the total number of the effective difference values and the effective shortest distance of each direction.
Optionally, the step of obtaining the total effective difference values and the effective shortest distance corresponding to each direction according to the standard RGB value range, the proportion of the standard pixel region in each direction, the corresponding edge point coordinate values, the RGB values and the ordinate values of the pixels in the row to be detected, and the RGB values and the abscissa values of the pixels in the row to be detected includes:
obtaining the coordinate value range to be measured in each direction according to the proportion of the standard pixel area in each direction and the corresponding edge point coordinate value;
respectively taking each pixel point of which the coordinate values in the row to be detected and the line to be detected are in the coordinate range to be detected in each direction and the RGB value is in the standard RGB value range as the pixel point to be detected corresponding to each direction;
selecting isolated pixel points in all directions and pixel points which are closest to edge points in the corresponding direction from at least two continuous pixel points to be detected at coordinate positions as effective pixel points in all directions according to coordinate values of the pixel points to be detected corresponding to all directions;
and obtaining the total effective difference value and the effective shortest distance corresponding to each direction according to the coordinate value of the effective pixel point and the coordinate value of the edge point in each direction.
Optionally, the step of obtaining the total effective difference and the effective shortest distance corresponding to each direction according to the coordinate value of the effective pixel point and the coordinate value of the edge point in each direction includes:
generating a numerical value list which is corresponding to all directions and is arranged from small to large according to the longitudinal coordinate values of effective pixel points which are respectively corresponding to the upper half part longitudinally and the lower half part longitudinally and the abscissa values of effective pixel points which are respectively corresponding to the left half part transversely and the right half part transversely;
respectively obtaining the number of difference values between two sequentially adjacent numerical values in the numerical value list corresponding to each direction within a threshold range, and taking the number as the total number of effective difference values corresponding to each direction;
and taking the shortest distance in the distances from all the effective pixel points in each direction to the edge points in the corresponding direction as the effective shortest distance corresponding to each direction.
Optionally, the step of obtaining the total reproduction ratio, the longitudinal total reproduction ratio, and the transverse total reproduction ratio in each direction according to the total pixels, the proportion of the standard pixel area, the total number of the standard pixels, the total number of the effective difference values, and the effective shortest distance in each direction includes:
obtaining the reproduction rate corresponding to each direction according to the total pixels, the proportion of the standard pixel area, the total number of the standard pixels, the total number of the effective difference values and the effective shortest distance in each direction;
and obtaining the longitudinal total reproduction ratio according to the reproduction ratio of the upper half longitudinal direction and the reproduction ratio of the lower half longitudinal direction, and obtaining the transverse total reproduction ratio according to the transverse reproduction ratio of the left half and the transverse reproduction ratio of the right half.
Optionally, the step of obtaining the reproduction ratio corresponding to each direction according to the total pixels, the proportion of the standard pixel area, the total number of the standard pixels, the total number of the effective difference values, and the effective shortest distance in each direction includes:
inputting the total pixels, the proportion of the standard pixel areas, the total number of the standard pixels, the total number of the effective difference values and the effective shortest distance in each direction into a preset reproduction rate calculation model Z which is 1-2p-2p/N +2np/N + d/V to respectively output the reproduction rate corresponding to each direction, wherein Z is the reproduction rate, p is the proportion of the standard pixel areas, N is the total number of the standard pixels, V is the total pixels, N is the total number of the effective difference values, and d is the effective shortest distance.
Optionally, the step of obtaining the total longitudinal reproduction ratio according to the reproduction ratio of the upper half longitudinal direction and the reproduction ratio of the lower half longitudinal direction, and obtaining the total lateral reproduction ratio according to the reproduction ratio of the left half lateral direction and the reproduction ratio of the right half lateral direction includes:
inputting the reproduction ratio of the upper half longitudinal direction and the reproduction ratio of the lower half longitudinal direction into a preset longitudinal total reproduction ratio calculation model Zv＝(ZOn the upper part+ZLower part) In/2, to output the total longitudinal reproduction, wherein ZvIn terms of total longitudinal weight ratio, ZOn the upper partThe upper half of the image is vertically corresponding to the reproduction ratio, ZLower partThe lower half part is the reproduction ratio corresponding to the longitudinal direction;
inputting the lateral reproduction ratio of the left half part and the lateral reproduction ratio of the right half part into a preset lateral total reproduction ratio calculation model Zh＝(ZLeft side of+ZRight side) In/2, withOutputting the total horizontal reproduction rate, wherein ZhIn terms of total lateral weight ratio, ZLeft side ofIs the left half lateral reproduction ratio, ZRight sideThe right half is the horizontally corresponding reproduction ratio.
Optionally, the step of inputting the image signal to a television, so that the television displays an image according to the image signal further includes:
sending an information source switching instruction comprising an information source type and a display mode to a television, so that the television is switched into a corresponding information source working mode and a corresponding display mode according to the information source type and the display mode in the information source switching instruction;
the step of inputting an image signal to a television to enable the television to display an image comprises:
and inputting an image signal to the television so that the television displays an image in the display mode under the information source working mode.
In addition, to achieve the above object, the present invention also provides an apparatus for automatically testing a reproduction ratio, the apparatus comprising: a communication module, a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method of automatically testing a reproduction rate as described above.
Further, to achieve the above object, the present invention also provides a computer readable storage medium having stored thereon a computer program which, when being executed by a processor, realizes the steps of the method of automatically testing a reproduction ratio as described above.
The embodiment of the invention provides a method, a device and a computer readable storage medium for automatically testing the reproduction rate, which enable a television to display images by inputting image signals to the television; collecting RGB values and coordinate values of all pixel points of a display image; acquiring the resolution of the image signal, a standard RGB value range, the proportion of standard pixel areas in each direction and the total number of standard pixels, wherein each direction comprises an upper half longitudinal direction, a lower half longitudinal direction, a left half transverse direction and a right half transverse direction; and obtaining the reproduction rate in each direction, the longitudinal total reproduction rate and the transverse total reproduction rate according to the resolution, the standard RGB value range, the RGB value and the coordinate value of each pixel point of the displayed image, the proportion of the standard pixel area in each direction and the total number of the standard pixels. Therefore, the method has the advantages of realizing automatic calculation of the reproduction rate, having the characteristic of high measurement speed, and solving the problems of low efficiency and low measurement result precision in manual reading of scales on a screen fixed picture to measure the reproduction rate because the reproduction rate is obtained according to the RGB value and the pixel coordinate value of the pixel of the display image, and the reproduction rate not only reflects the reproduction of the RGB value of each pixel of the television, but also reflects the reproduction of the position of the pixel.
Drawings
FIG. 1 is a schematic diagram of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a first embodiment of a method for automatically testing a reproduction ratio according to the present invention;
FIG. 3 is a test specific image for use in automatically testing the reproduction ratio according to the present invention;
FIG. 4 is a flowchart illustrating a step S40 of the method for automatically testing the reproduction ratio according to the second embodiment of the present invention;
FIG. 5 is a flowchart illustrating a third embodiment of the method for automatically testing the reproduction ratio according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a hardware structure of an apparatus for automatically testing a reproduction ratio according to various embodiments of the present invention, where the apparatus includes a communication module 10, a memory 20, a processor 30, and other components. Those skilled in the art will appreciate that the apparatus shown in fig. 1 may also include more or fewer components than those shown, or combine certain components, or a different arrangement of components. Wherein, the processor 30 is connected to the memory 20 and the communication module 10, respectively, and the memory 20 stores thereon a computer program, which is executed by the processor 30 at the same time.
The communication module 10 may be connected to an external device through a network. The communication module 10 may receive data sent by an external device, and may also send data, instructions, and information to the external device, where the external device may be an electronic device with a display screen, such as a television, a notebook computer, a desktop computer, and a tablet computer.
The memory 20 may be used to store software programs as well as various data. The memory 20 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (collecting RGB values and coordinate values of each pixel point of an image displayed by a television) required by at least one function, and the like; the storage data area may store data or information created according to the use of the device, or the like. Further, the memory 20 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 30, which is a control center of the apparatus, connects various parts of the entire apparatus using various interfaces and lines, performs various functions of the apparatus and processes data by operating or executing software programs and/or modules stored in the memory 20 and calling data stored in the memory 20, thereby monitoring the entire apparatus. Processor 30 may include one or more processing units; preferably, the processor 30 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 30.
Although not shown in fig. 1, the apparatus may further include a circuit control module, where the circuit control module is used for being connected to a mains supply to implement power control and ensure normal operation of other components.
Those skilled in the art will appreciate that the configuration of the device shown in fig. 1 is not intended to be limiting of the device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
Various embodiments of the method of the present invention are presented in terms of the above-described hardware architecture.
Referring to fig. 2, in a first embodiment of the method for automatically testing a rate of reproduction of the present invention, the method for automatically testing a rate of reproduction includes the steps of:
step S10, inputting an image signal to a television to cause the television to display an image;
in this embodiment, the image signal is an image signal converted by the reproduction ratio test dedicated image, and the image signal may be a 4K image signal, a 1080P image signal, a 720P image signal, or a 640 × 480 image signal. The apparatus for automatically testing the reproduction rate inputs an image signal to a television through a built-in video signal generator. And after the television receives the image signal input by the automatic reproduction rate testing device, displaying an image corresponding to the image signal on a display screen of the television.
Step S20, collecting RGB value and coordinate value of each pixel point of the display image;
the automatic reproduction rate testing device acquires an image displayed by a television through a built-in video acquisition card, acquires an RGB value of each pixel point of the displayed image, and adopts the same coordinate system as the reproduction rate testing special image for the displayed image, for example, the length direction of the image is taken as the horizontal axis direction, the width of the image is taken as the longitudinal axis direction, the coordinate points corresponding to the upper left corner, the lower right corner or the upper right corner of the image are taken as the origin of coordinates, and the coordinate point corresponding to the upper left corner is taken as an example, namely the coordinate point corresponding to the intersection of the left edge and the upper source of the image. And finally, obtaining corresponding coordinate values of all pixel points in the display image in the constructed coordinate system, wherein the coordinate values comprise two values of a horizontal coordinate value and a vertical coordinate value.
Step S30, acquiring a resolution of the image signal, a standard RGB value range, a proportion of standard pixel areas in each direction, and a total number of standard pixels, where each direction includes an upper half longitudinal direction, a lower half longitudinal direction, a left half transverse direction, and a right half transverse direction;
in the scheme, when a special image for the reproduction ratio test corresponding to the image signal is manufactured, the image middle point can be taken as a reference point and divided into four directions of an upper half longitudinal direction, a lower half longitudinal direction, a left half transverse direction and a right half transverse direction, corresponding standard pixel regions are correspondingly arranged in each direction, and pixel points of which the RGB values are in a standard RGB value range in the image are called standard pixel points which are all in the standard pixel regions.
If the longitudinal direction is taken as the width and the transverse direction is taken as the length, the lengths of the upper half longitudinal standard pixel region and the lower half longitudinal standard pixel region are the same, namely the range of the horizontal coordinate value of the standard pixel region is the same, the widths of the two standard pixel regions can be the same or different, if the vertical coordinate value of the upper edge point is greater than the vertical coordinate value of the lower edge point, the range of the vertical coordinate value of the upper half longitudinal standard pixel region is the sum of the vertical coordinate value of the upper edge point to the vertical coordinate value of the upper edge point and the width of the upper half longitudinal standard pixel region, the range of the vertical coordinate value of the lower half longitudinal standard pixel region is the difference between the vertical coordinate value of the lower edge point and the width of the lower half longitudinal standard pixel region to the vertical coordinate value of the lower edge point, if the vertical coordinate value of the upper edge point is less than the vertical coordinate value of the lower edge point, the range of the vertical coordinate value of the upper half longitudinal standard pixel region is the difference between the vertical coordinate value of the upper edge point and the width of the upper half longitudinal standard pixel region to the vertical coordinate value of the upper edge point And (5) calibrating, wherein the range of the vertical coordinate value of the lower half longitudinal standard pixel region is from the vertical coordinate value of the lower edge point to the sum of the vertical coordinate value of the lower edge point and the width of the lower half longitudinal standard pixel region.
For the left half horizontal and right half horizontal standard pixel regions, the widths of the two standard pixel regions are the same, i.e. the vertical coordinate value range of the standard pixel region is the same, and the lengths of the two standard pixel regions can be the same or different, if the left edge point horizontal coordinate value is larger than the right edge point horizontal coordinate value, the horizontal coordinate value range of the left half horizontal standard pixel region is from the left edge point horizontal coordinate value to the sum of the left edge point horizontal coordinate value and the left half horizontal standard pixel region length, the horizontal coordinate value range of the right half horizontal standard pixel region is from the right edge point horizontal coordinate value to the right edge point horizontal coordinate value from the difference between the right edge point horizontal coordinate value and the right half horizontal standard pixel region length, if the left edge point horizontal coordinate value is smaller than the right edge point horizontal coordinate value, the horizontal coordinate value range of the left half horizontal standard pixel region is from the difference between the left edge point horizontal coordinate value and the left half horizontal standard pixel region length to the left edge point horizontal coordinate value, the range of the abscissa value of the right half transverse standard pixel region is the sum of the ordinate value of the right edge point to the abscissa value of the right edge point and the length of the right half transverse standard pixel region.
The proportion of the standard pixel regions in the upper half longitudinal direction and the lower half longitudinal direction is the proportion of the standard pixel regions in the longitudinal total length of the image along the corresponding upper half longitudinal direction and the corresponding lower half longitudinal direction respectively, and the proportion of the standard pixel regions in the left half transverse direction and the right half transverse direction is the proportion of the standard pixel regions in the left half transverse direction and the right half transverse direction respectively in the transverse total length of the image. The total number of the standard pixels in the upper half longitudinal direction and the lower half longitudinal direction refers to the number of the standard pixels in any column in the standard pixel region corresponding to the upper half longitudinal direction and the lower half longitudinal direction, and the total number of the standard pixels in the left half transverse direction and the right half transverse direction refers to the number of the standard pixels in any row in the standard pixel region corresponding to the left half transverse direction and the right half transverse direction. For example, as shown in fig. 3, the proportion of the upper half longitudinal standard pixel region and the proportion of the lower half longitudinal standard pixel region are both 20%, the proportion of the distances from the positions of the standard pixel points in the upper half longitudinal standard pixel region and the lower half longitudinal standard pixel region to the corresponding edges to the longitudinal total length is 2%, 4%, 6%, 8%, 10%, 12%, 14%, 16%, 18% and 20%, the proportion of the distances from the positions of the standard pixel points in the left half transverse standard pixel region and the right half transverse standard pixel region to the corresponding edges to the transverse total length is 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9% and 10%, and the total number of the standard pixels in each direction is exactly 10.
The image signal is correspondingly provided with image parameters such as image signal resolution, standard RGB value range, proportion of standard pixel areas in each direction, total number of standard pixels and the like, wherein the directions comprise information such as upper half longitudinal direction, lower half longitudinal direction, left half transverse direction, right half transverse direction and the like, and the resolution, the standard RGB value range, the proportion of the standard pixel areas in each direction and the total number of the standard pixels corresponding to the input image signal are obtained according to the input image signal.
And step S40, obtaining the reproduction rate of each direction, the longitudinal total reproduction rate and the transverse total reproduction rate according to the resolution, the standard RGB value range, the RGB value and the coordinate value of each pixel point of the display image, the proportion of the standard pixel area of each direction and the total number of the standard pixels.
And obtaining the upper half longitudinal reproduction rate, the lower half longitudinal reproduction rate, the longitudinal total reproduction rate, the left half transverse reproduction rate, the right half transverse reproduction rate and the transverse total reproduction rate according to the resolution corresponding to the input image signal, the standard RGB value range, the proportion of the standard pixel region in each direction, the total number of the standard pixels, the RGB value and the coordinate value of each pixel point in the display image.
It should be noted that after six reproduction ratio measurement values of the longitudinal upper half reproduction ratio, the longitudinal lower half reproduction ratio, the longitudinal total reproduction ratio, the transverse upper half reproduction ratio, the transverse lower half reproduction ratio and the transverse total reproduction ratio are obtained, the six reproduction ratio measurement values are compared with preset reproduction ratio indexes one by one, and the display of the television can be determined to reach the standard only if the six measured reproduction ratios are all greater than or equal to the preset reproduction ratio indexes. And when any one of the six reproduction rate measured values is smaller than the corresponding preset reproduction rate index, determining that the display of the television does not reach the standard, adjusting the television in a targeted manner, and measuring the reproduction rate of the adjusted television until all the six reproduction rate measured values reach the standard.
The embodiment enables the television to display images by inputting image signals to the television; collecting RGB values and coordinate values of all pixel points of a display image; acquiring the resolution of the image signal, the range of standard RGB values, the proportion of standard pixel areas in each direction and the total number of standard pixels, wherein the directions comprise an upper half longitudinal direction, a lower half longitudinal direction, a left half transverse direction and a right half transverse direction; and obtaining the reproduction rate in each direction, the longitudinal total reproduction rate and the transverse total reproduction rate according to the resolution, the standard RGB value range, the RGB value and the coordinate value of each pixel point of the displayed image, the proportion of the standard pixel area in each direction and the total number of the standard pixels. Therefore, the method has the advantages of realizing automatic calculation of the reproduction rate, having the characteristic of high measurement speed, and solving the problems of low efficiency and low measurement result precision in manual reading of scales on a screen fixed picture to measure the reproduction rate because the reproduction rate is obtained according to the RGB value and the pixel coordinate value of the pixel of the display image, and the reproduction rate not only reflects the reproduction of the RGB value of each pixel of the television, but also reflects the reproduction of the position of the pixel.
Further, referring to fig. 4, a second embodiment of the method for automatically testing a reproduction ratio according to the present application is proposed according to the first embodiment of the method for automatically testing a reproduction ratio of the present application, in this embodiment, the step S40 includes:
step S41, obtaining total pixels of each direction according to the resolution of the image signal;
in this embodiment, the total pixels in each direction can be obtained according to the resolution of the image signal, and if the resolution of the image signal is 1920 × 1080, the total pixels in the upper half vertical direction, the lower half vertical direction, the left half horizontal direction and the right half horizontal direction are 540, 960 and 960, respectively. If the resolution of the image signal is 1280 × 720, the total pixels of the upper half vertical direction, the lower half vertical direction, the left half horizontal direction, and the right half horizontal direction are 360, 640, and 640, respectively.
Step S42, selecting any row in the display image with the vertical coordinate value of the pixel point within the preset vertical coordinate range as a row to be tested, and selecting any column in the display image with the horizontal coordinate value of the pixel point within the preset horizontal coordinate range as a column to be tested;
the preset ordinate range is a range of ordinate values of the standard pixel regions in the horizontal direction of the left half and the horizontal direction of the right half in the image for specially testing the reproduction rate in the longitudinal direction of the image, and a range of abscissa values of the standard pixel regions in the vertical direction of the upper half and the vertical direction of the upper half in the image for specially testing the reproduction rate in the preset abscissa range in the horizontal direction of the image. And selecting any row of the display image with the vertical coordinate values of the pixel points all within the preset vertical coordinate range as a row to be tested, and selecting any column of the display image with the horizontal coordinate values of the pixel points all within the preset horizontal coordinate range as a column to be tested, so that part of the pixel points of the row to be tested and the column to be tested are positioned in the standard pixel area. For example, the abscissa threshold range is [955,965], and a row with an abscissa value of 959 in the display image may be selected as the row to be measured; the range of the ordinate threshold is [535,545], and a line with an ordinate value of 535 in the display image can be selected as the line to be measured.
Step S43, taking the upper edge pixel point and the lower edge pixel point in the row to be tested as the edge points corresponding to the upper half part longitudinally and the lower half part longitudinally respectively, and taking the left edge pixel point and the right edge pixel point in the row to be tested as the edge points corresponding to the left half part transversely and the right half part transversely respectively;
and respectively taking the upper edge pixel point and the lower edge pixel point in the row to be detected as edge points corresponding to the upper half part longitudinally and the lower half part longitudinally, and respectively taking the left edge pixel point and the right edge pixel point in the row to be detected as edge points corresponding to the left half part transversely and the right half part transversely. For example, for a 1920 × 1080 image, the ordinate of the line to be measured is 535, the abscissa of the column to be measured is 959, and the edge point coordinates of the top half in the vertical direction, the bottom half in the vertical direction, the left half in the horizontal direction, and the right half in the horizontal direction are (959, 0), (959, 1080), (0, 535), (1920, 535), respectively.
Step S44, obtaining the total effective difference value and the effective shortest distance corresponding to each direction according to the standard RGB value range, the proportion of the standard pixel area in each direction and the corresponding edge point coordinate value, the RGB value and the longitudinal coordinate value of each pixel point of the row to be tested and the RGB value and the transverse coordinate value of each pixel point of the row to be tested;
obtaining a coordinate value range to be detected in each direction according to the proportion of the standard pixel area in each direction and the corresponding edge point coordinate value, and taking each pixel point of which the coordinate values in the row to be detected and the row to be detected are in the longitudinal coordinate range to be detected in each direction and the RGB value is in the standard RGB value range as a pixel point to be detected corresponding to each direction; for example, the coordinate values of the edge points of the upper half longitudinal direction, the lower half longitudinal direction, the left half transverse direction and the right half transverse direction are (959, 0), (959, 1080), (0, 535) and (1920, 535), respectively, the proportion of the standard pixel regions of the upper half longitudinal direction, the lower half longitudinal direction, the left half transverse direction and the right half transverse direction is 20%, 10% and 10%, respectively, and the ranges of the coordinate values to be measured of the upper half longitudinal direction, the lower half longitudinal direction, the left half transverse direction and the right half transverse direction are (959, 0-216), (959, 864-1080), (0-192, 535) and (1728-1920, 535), respectively, can be calculated.
It should be noted that a pixel point of the line to be detected and the column to be detected, which are coincident, may be in the range of the coordinate value to be detected in two directions, three directions, or four directions at the same time, and the RGB value of the pixel point is also in the range of the standard RGB value, then the pixel point belongs to the pixel point to be detected corresponding to the two directions, three directions, or four directions at the same time.
After acquiring the pixel points to be detected corresponding to each direction, selecting two types of pixel points from the pixel points to be detected corresponding to each direction as effective pixel points in each direction according to the coordinate values of the pixel points to be detected corresponding to each direction, wherein one type of pixel point is selected from a pixel point group consisting of two or more adjacent pixel points to be detected with continuous coordinate positions, and the other type of pixel point is selected from a pixel point group consisting of two or more adjacent pixel points to be detected with continuous coordinate positions and closest to the edge point in the corresponding direction, for example, a group of pixel point groups with continuous coordinate positions exists in the upper half of longitudinal pixel points to be detected, the coordinate values are respectively (959, 192), (959, 193) and (959, 194), the coordinate value of the upper half of longitudinal edge point is (959, 0), and it can be known that the pixel point of (959, 192) is closest to the edge point in the upper half of longitudinal direction, so that the pixel point group with continuous coordinate positions is selected as an effective pixel point; and another isolated pixel point is characterized in that the coordinate position of the pixel point is not adjacent to the position of any other pixel point to be measured.
The specific implementation process of obtaining the pixel point to be detected can be as follows: respectively generating a first numerical value list which is corresponding to the upper half part and the lower half part and is sequentially arranged from small to large according to numerical values according to the longitudinal coordinate values of the pixel points to be detected which are corresponding to the upper half part and the lower half part; and respectively generating a first numerical value list which is corresponding to the left half part and the right half part and is sequentially arranged from small to large according to the abscissa values of the pixel points to be detected corresponding to the left half part and the right half part.
If the upper edge longitudinal coordinate value is larger than the lower edge longitudinal coordinate value, subtracting one from each numerical value in the first numerical value list corresponding to the upper half part and adding one to each numerical value in the first numerical value list corresponding to the lower half part, or if the upper edge longitudinal coordinate value is smaller than the lower edge longitudinal coordinate value, adding one to each numerical value in the first numerical value list corresponding to the upper half part and subtracting one from each numerical value in the first numerical value list corresponding to the lower half part to respectively generate second numerical value lists corresponding to the upper half part and the lower half part; and if the left edge abscissa value is larger than the right edge abscissa value, subtracting one from each numerical value in the first numerical value list corresponding to the left half part and adding one to each numerical value in the first numerical value list corresponding to the right half part, or if the left edge abscissa value is smaller than the right edge abscissa value, adding one to each numerical value in the first numerical value list corresponding to the left half part and subtracting one from each numerical value in the first numerical value list corresponding to the right half part, and respectively generating the numerical value lists corresponding to the left half part and the right half part and the second numerical value lists corresponding to the right half part.
And comparing the first numerical value list corresponding to each direction with the corresponding second numerical value list, removing the same numerical values in the first numerical value list corresponding to each direction as those in the second numerical value list, and generating a third numerical value list corresponding to each direction, wherein the pixel points corresponding to the numerical values in the third numerical value list in each direction are effective pixel points in each direction. For example, when the values of the first value list in the upper half of the vertical direction are {5, 9, 10, 15, 33, 34, 35}, and the vertical coordinate value (0) of the upper edge is smaller than the vertical coordinate value (1080) of the lower edge in the established coordinate system, the second value list in the upper half of the vertical direction is {6, 10, 11, 16, 34, 35, 36}, the deduplication operation is performed according to the first value list and the second value list, the generated third value list is {5, 9, 15, 33}, the coordinate values corresponding to the values in the third value list are (959, 5), (959, 9), (959, 15), and (959, 33), respectively, and the pixel points corresponding to the coordinate values are used as the effective pixel points corresponding to the upper half of the vertical direction.
After obtaining effective pixel points in all directions, generating a numerical value list which is corresponding to all directions and is arranged in sequence from small to large according to the longitudinal coordinate values of the effective pixel points which are respectively corresponding to the upper half part longitudinally and the lower half part longitudinally and the abscissa values of the effective pixel points which are respectively corresponding to the left half part transversely and the right half part transversely; respectively obtaining the number of difference values between two sequentially adjacent numerical values in the numerical value list corresponding to each direction within a threshold range, and taking the number as the total number of effective difference values corresponding to each direction; for example, the lower vertical list of values is 1000, 1024, 1035, 1058, 1063. And calculating the difference value between every two adjacent numerical values in the lower half part longitudinal numerical value list as (24, 11, 23, 5), and according to the threshold range [15, 32], the total number of effective difference values corresponding to the lower half part longitudinally is 2.
Respectively taking the shortest distance in the distances from the effective pixel points in each direction to the corresponding edge points in each direction as the effective shortest distance corresponding to each direction; for example, the effective pixel point coordinate values in the upper half longitudinal direction are (959, 5), (959, 9), (959, 15), and (959, 33), respectively, and the edge point coordinate value corresponding to the upper half longitudinal direction is (959, 0), and it is known that the pixel point corresponding to (959, 5) is closest to the edge point, and the distance is 5, which is the effective shortest distance corresponding to the upper half longitudinal direction.
And step S45, obtaining the reproduction rate, the longitudinal total reproduction rate and the transverse total reproduction rate of each direction according to the total pixels, the proportion of the standard pixel area, the total number of the standard pixels, the total number of the effective difference values and the effective shortest distance of each direction.
Inputting the total pixels, the proportion of the standard pixel area, the total number of the standard pixels, the total number of the effective difference values and the effective shortest distance of each direction into a preset reproduction rate calculation model Z which is 1-2p-2p/N +2np/N + d/V, and respectively outputting the reproduction rate corresponding to each direction, wherein Z is the reproduction rate, p is the proportion of the standard pixel area, N is the total number of the standard pixels, V is the total pixels, N is the total number of the effective difference values, and d is the effective shortest distance.
Inputting the calculated reproduction ratio of the upper half longitudinal direction and the reproduction ratio of the lower half longitudinal direction into a preset longitudinal total reproduction ratio calculation model Zv＝(ZOn the upper part+ZLower part) In/2, the total longitudinal reproduction ratio is output, wherein ZvIn terms of total longitudinal weight ratio, ZOn the upper partThe upper half part is longitudinally corresponding to the reproduction ratio，ZLower partThe lower half part is the reproduction ratio corresponding to the longitudinal direction.
Inputting the calculated reproduction ratio of the left half transverse direction and the reproduction ratio of the right half transverse direction into a preset transverse total reproduction ratio calculation model Zh＝(ZLeft side of+ZRight side) In/2, the total lateral reproduction ratio is output, where ZhIn terms of total lateral weight ratio, ZLeft side ofIs the left half lateral reproduction ratio, ZRight sideThe right half is the horizontally corresponding reproduction ratio.
The embodiment provides a strategy for automatically calculating the reproduction rate of the device to be measured in each longitudinal direction, the total longitudinal reproduction rate and the total transverse reproduction rate according to the RGB values corresponding to the pixel points in a certain column and a certain row in the acquired image, the corresponding coordinate values and the preset reproduction rate calculation model. It can be known from the preset rate calculation model that the RGB values of the pixels in a certain column and a certain row of the actual display image of the television are compared with the RGB values of the pixels in the same corresponding column and the same corresponding row of the rate test dedicated image, and the positions of the pixels in a certain column and a certain row of the actual display image of the television are also compared with the positions of the pixels in the same corresponding column and the same corresponding row of the rate test dedicated image, that is, the rate of the television is reflected according to the RGB value deviation and the position deviation between the pixels of the actual display image of the television and the pixels of the rate test dedicated image, so that the accuracy of the longitudinal rate of the device to be tested is higher, and the rate of the television is more reflected.
Further, referring to fig. 5, a third embodiment of the method for automatically testing a reproduction ratio according to the first embodiment of the method for automatically testing a reproduction ratio of the present application is provided, and in this embodiment, before the step S10, the method further includes:
step S50, sending an information source switching instruction including an information source type and a display mode to a television, so that the equipment to be tested is switched into a corresponding information source working mode and a corresponding display mode according to the information source type and the display mode in the information source switching instruction;
the step S10 includes:
step S11, inputting an image signal to the television, so that the television displays an image in the display mode in the source operating mode.
In this embodiment, after receiving the source type and the display mode input by the user, the device for automatically testing the reproduction rate automatically sends a switching instruction including the source type and the display mode to the television through the script, and the television switches to the corresponding source operating mode and the display mode according to the received switching instruction. The signal source type can be AV, VGA, HDMI or Ypbpr, the corresponding television signal source working mode can be AV signal source working mode, VGA signal source working mode, HDMI signal source working mode or Ypbpr signal source working mode, and the display mode of the television can be panoramic mode or conventional mode.
And when the television is determined to be switched to the corresponding information source working mode and the display mode, the device for automatically testing the reproduction rate inputs an image to the television, and the television displays the image in the information source working mode by adopting the display mode after receiving an image signal. For example, when the signal source type in the switching command is HDMI and the display mode is the panoramic mode, after the television receives the image signal sent by the device for automatically testing the reproduction rate, the image corresponding to the image signal is displayed in the panoramic mode in the HDMI signal source working mode.
It should be noted that the preset reproduction rate index is related to the type of the source and the display mode, for example, when the panoramic mode is set, the reproduction rate index corresponding to the AV source is 98%, the standard definition and high definition reproduction rate index of the HDMI source is 100%, the 4K signal reproduction rate index of the HDMI source is 100%, the reproduction rate index of the Ypbpr source is 100%, and the reproduction rate index of the VGA source is 100%; when the standard definition and high definition reproduction rate index of the HDMI source is 96%, the 4K signal reproduction rate index of the HDMI source is 100%, the reproduction rate index of the Ypbpr source is 96% and the reproduction rate index of the VGA source is 100%.
The embodiment provides a strategy for switching the information source type and the display mode of the television by automatically sending the switching instruction of the information source type and the display mode, so that the information source type and the display mode of the television do not need to be manually adjusted, the test flow is shortened, and the test efficiency of the whole reproduction rate is improved.
The invention also proposes a computer-readable storage medium on which a computer program is stored. The computer readable storage medium may be the Memory 20 of the apparatus for automatically testing reproduction ratio of fig. 1, or may be at least one of a ROM (Read-Only Memory)/RAM (Random Access Memory), a magnetic disk, and an optical disk, and the computer readable storage medium includes several pieces of information for enabling the apparatus for automatically testing reproduction ratio to perform the method according to the embodiments of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A method for automatically testing reproduction rate is characterized by comprising the following steps:
inputting an image signal to a television to enable the television to display an image;
collecting RGB values and coordinate values of all pixel points of a display image;
acquiring the resolution of the image signal, a standard RGB value range, the proportion of standard pixel areas in each direction and the total number of standard pixels, wherein each direction comprises an upper half longitudinal direction, a lower half longitudinal direction, a left half transverse direction and a right half transverse direction;
obtaining the reproduction rate in each direction, the longitudinal total reproduction rate and the transverse total reproduction rate according to the resolution, the standard RGB value range, the RGB value and the coordinate value of each pixel point of the display image, the proportion of the standard pixel area in each direction and the total number of the standard pixels;
the step of obtaining the reproduction rate in each direction, the longitudinal total reproduction rate and the transverse total reproduction rate according to the resolution, the standard RGB value range, the RGB value and the coordinate value of each pixel point of the display image, the proportion of the standard pixel area in each direction and the total number of the standard pixels comprises the following steps:
obtaining total pixels in all directions according to the resolution of the image signal;
selecting any row of the display image with the ordinate values of the pixel points all within the preset ordinate range as a row to be tested, and selecting any column of the display image with the abscissa values of the pixel points all within the preset abscissa range as a column to be tested;
respectively taking the upper edge pixel point and the lower edge pixel point in the row to be detected as edge points corresponding to the upper half part longitudinally and the lower half part longitudinally, and respectively taking the left edge pixel point and the right edge pixel point in the row to be detected as edge points corresponding to the left half part transversely and the right half part transversely;
obtaining the coordinate value range to be measured in each direction according to the proportion of the standard pixel area in each direction and the corresponding edge point coordinate value;
respectively taking each pixel point of which the coordinate values in the row to be detected and the line to be detected are in the coordinate range to be detected in each direction and the RGB value is in the standard RGB value range as the pixel point to be detected corresponding to each direction;
selecting isolated pixel points in all directions and pixel points which are closest to edge points in the corresponding direction from at least two continuous pixel points to be detected at coordinate positions as effective pixel points in all directions according to coordinate values of the pixel points to be detected corresponding to all directions;
generating a numerical value list which is corresponding to all directions and is arranged from small to large according to the longitudinal coordinate values of effective pixel points which are respectively corresponding to the upper half part longitudinally and the lower half part longitudinally and the abscissa values of effective pixel points which are respectively corresponding to the left half part transversely and the right half part transversely;
respectively obtaining the number of difference values between two sequentially adjacent numerical values in the numerical value list corresponding to each direction within a threshold range, and taking the number as the total number of effective difference values corresponding to each direction;
taking the shortest distance in the distances from all effective pixel points in each direction to the edge points in the corresponding direction as the effective shortest distance corresponding to each direction;
obtaining the reproduction rate corresponding to each direction according to the total pixels, the proportion of the standard pixel area, the total number of the standard pixels, the total number of the effective difference values and the effective shortest distance in each direction;
obtaining a longitudinal total reproduction ratio according to the reproduction ratio of the upper half part in the longitudinal direction and the reproduction ratio of the lower half part in the longitudinal direction, and obtaining a transverse total reproduction ratio according to the reproduction ratio of the left half part in the transverse direction and the reproduction ratio of the right half part in the transverse direction;
the step of obtaining the reproduction rate corresponding to each direction according to the total pixels, the proportion of the standard pixel area, the total number of the standard pixels, the total number of the effective difference values and the effective shortest distance in each direction comprises the following steps:
inputting the total pixels, the proportion of the standard pixel areas, the total number of the standard pixels, the total number of the effective difference values and the effective shortest distance in each direction into a preset reproduction rate calculation model Z which is 1-2p-2p/N +2np/N + d/V to respectively output the reproduction rate corresponding to each direction, wherein Z is the reproduction rate, p is the proportion of the standard pixel areas, N is the total number of the standard pixels, V is the total pixels, N is the total number of the effective difference values, and d is the effective shortest distance.
2. The method for automatically testing reproduction ratio according to claim 1, wherein the step of obtaining a total reproduction ratio in a vertical direction from the reproduction ratio in the upper half vertical direction and the reproduction ratio in the lower half vertical direction, and obtaining a total reproduction ratio in a horizontal direction from the reproduction ratio in the left half horizontal direction and the reproduction ratio in the right half horizontal direction comprises:
inputting the reproduction ratio of the upper half longitudinal direction and the reproduction ratio of the lower half longitudinal direction into a preset longitudinal total reproduction ratio calculation model Zv＝(ZOn the upper part+ZLower part) In/2, to output the total longitudinal reproduction, wherein ZvIn terms of total longitudinal weight ratio, ZOn the upper partThe upper half of the image is vertically corresponding to the reproduction ratio, ZLower partThe lower half part is the reproduction ratio corresponding to the longitudinal direction;
inputting the lateral reproduction ratio of the left half part and the lateral reproduction ratio of the right half part into a preset lateral total reproduction ratio calculation model Zh＝(ZLeft side of+ZRight side) In/2, to output the total reproduction in the lateral direction, wherein ZhIn terms of total lateral weight ratio, ZLeft side ofIs the left half lateral reproduction ratio, ZRight sideThe right half is the horizontally corresponding reproduction ratio.
3. The method for automatically testing reproduction ratio of claim 2, wherein the step of inputting an image signal to a television to cause the television to display an image further comprises, before the step of inputting an image signal to the television:
sending an information source switching instruction comprising an information source type and a display mode to a television, so that the television is switched into a corresponding information source working mode and a corresponding display mode according to the information source type and the display mode in the information source switching instruction;
the step of inputting an image signal to a television to enable the television to display an image comprises:
and inputting an image signal to the television so that the television displays an image in the display mode under the information source working mode.
4. An apparatus for automatically testing a reproduction ratio, the apparatus comprising: a communication module, a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method of automatically testing a reproduction ratio as claimed in any one of claims 1 to 3.
5. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method of automatically testing a reproduction rate according to any one of claims 1 to 3.
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