CN117848230A - LED display screen deformation degree detection system - Google Patents
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Abstract
The invention relates to a deformation degree detection system of an LED display screen, which comprises the following components: the time-sharing acquisition device is used for completing one-time image data acquisition operation on the LED display screen every set time length so as to obtain and output a corresponding real-time acquisition frame, and the value of the set time length is inversely proportional to the number of LED units of the LED display screen; and the curve processing device is used for determining the corresponding deformation degree of the LED display screen. According to the invention, the occupied area of the LED display screen in the field optimized image can be identified, the area edge curve of the occupied area and the edge curve of the standard geometric figure corresponding to the LED display screen are obtained, and the curve similarity degree of the area edge curve of the occupied area and the edge curve of the standard geometric figure corresponding to the LED display screen is compared to determine the deformation degree corresponding to the LED display screen, so that the accuracy of detecting the deformation degree of the LED display screen is improved.
Description
Technical Field
The invention relates to the field of LED display screens, in particular to a deformation degree detection system of an LED display screen.
Background
The LED display screen, namely the LED electronic display screen, is a display mode by controlling the semiconductor light emitting diodes, and is formed by uniformly arranging tens of thousands to hundreds of thousands of semiconductor light emitting diode pixel points. The LED pixel points with different colors can be manufactured by using different materials so as to display various information display screens such as characters, graphics, images, animation, quotation, videos, video signals and the like. The most widely used is red, green and yellow. While the development of blue and pure green LEDs has reached a practical stage.
For various types of LED display screens, deformation phenomenon on appearance is unavoidable after long-term use, and then the picture effect and the service life of the whole LED display screen are affected. However, the deformation of the appearance of the LED display screen is generally a subtle and invisible change, and the degree of deformation of the appearance of the LED display screen also lacks an effective and high-precision targeted detection mechanism.
Disclosure of Invention
In order to solve the technical problems in the related art, the invention provides an LED display screen deformation degree detection system, which can identify an occupied area of an LED display screen in an image after field optimization, acquire an area edge curve of the occupied area corresponding to the LED display screen and an edge curve of a standard geometric figure corresponding to the LED display screen, compare the similarity degree of the area edge curve of the occupied area corresponding to the LED display screen and the edge curve of the standard geometric figure corresponding to the LED display screen to determine the deformation degree corresponding to the LED display screen, and positively correlate the determined deformation degree corresponding to the LED display screen and the similarity degree of the area edge curve of the occupied area corresponding to the LED display screen and the edge curve of the standard geometric figure corresponding to the LED display screen, thereby solving the technical problems.
According to the present invention, there is provided a system for detecting a degree of deformation of an LED display screen, the system comprising:
the time-sharing acquisition device is arranged opposite to the LED display screen and is used for completing one-time image data acquisition operation on the LED display screen every set time length so as to obtain and output a corresponding real-time acquisition frame, and the value of the set time length is inversely proportional to the number of LED units of the LED display screen;
the spiced salt removing device is connected with the time-sharing acquisition device and is used for executing spiced salt noise removing processing on the received real-time acquisition frame image so as to obtain and output a corresponding instant denoising image;
a content enhancement device connected with the spiced salt removing device and used for performing image content enhancement processing based on logarithmic transformation on the received instant denoising image so as to obtain and output a corresponding content enhancement image;
a cubic interpolation device connected with the content enhancement device and used for executing cubic polynomial interpolation processing on the received content enhancement image so as to obtain and output a corresponding cubic interpolation image;
the curve processing device is connected with the cubic interpolation device and is used for identifying the occupation area of the LED display screen in the cubic interpolation image, acquiring the area edge curve of the occupation area corresponding to the LED display screen and the edge curve of the standard geometric figure corresponding to the LED display screen, comparing the curve similarity degree of the area edge curve of the occupation area corresponding to the LED display screen and the edge curve of the standard geometric figure corresponding to the LED display screen to determine the deformation degree corresponding to the LED display screen, and comparing the curve similarity degree of the area edge curve of the occupation area corresponding to the LED display screen and the edge curve of the standard geometric figure corresponding to the LED display screen to determine the deformation degree corresponding to the LED display screen comprises: the determined deformation degree corresponding to the LED display screen and the area edge curve of the occupied area corresponding to the LED display screen are positively correlated with the curve similarity degree of the edge curve of the standard geometric figure corresponding to the LED display screen;
and the wireless transmission interface is connected with the curve processing device and is used for receiving and wirelessly transmitting the deformation degree corresponding to the LED display screen to a remote equipment management server.
The invention has at least the following three important invention points:
important invention point A: identifying an occupied area of the LED display screen in the cubic interpolation image, acquiring an area edge curve of the occupied area corresponding to the LED display screen and an edge curve of a standard geometric figure corresponding to the LED display screen, and comparing the area edge curve of the occupied area corresponding to the LED display screen with the curve similarity degree of the edge curve of the standard geometric figure corresponding to the LED display screen to determine the deformation degree corresponding to the LED display screen, wherein the determined deformation degree corresponding to the LED display screen and the area edge curve of the occupied area corresponding to the LED display screen are positively correlated with the curve similarity degree of the edge curve of the standard geometric figure corresponding to the LED display screen;
important invention point B: sequentially performing salt and pepper noise removal processing, image content enhancement processing based on logarithmic transformation and cubic polynomial interpolation processing on the field imaging image of the LED display screen to obtain a processed image with better quality so as to improve the detection precision of the deformation degree corresponding to the subsequent LED display screen;
important invention point C: and identifying the occupation area of the LED display screen in the cubic interpolation image based on the brightness value distribution interval corresponding to the screen frame of the LED display screen, wherein the brightness value distribution interval corresponding to the screen frame of the LED display screen is defined by setting a brightness upper limit threshold value and a brightness lower limit threshold value.
Drawings
Embodiments of the present invention will be described below with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram showing an internal structure of an LED display screen deformation degree detection system according to an embodiment of the present invention.
Fig. 2 is a schematic diagram showing an internal structure of an LED display screen deformation degree detection system according to embodiment B of the present invention.
Fig. 3 is a schematic diagram showing an internal structure of an LED display screen deformation degree detection system according to embodiment C of the present invention.
Detailed Description
An embodiment of the LED display screen deformation degree detection system of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic view showing an internal structure of an LED display screen deformation degree detection system according to an embodiment of the present invention, the system including:
the time-sharing acquisition device is arranged opposite to the LED display screen and is used for completing one-time image data acquisition operation on the LED display screen every set time length so as to obtain and output a corresponding real-time acquisition frame, and the value of the set time length is inversely proportional to the number of LED units of the LED display screen;
the time-sharing acquisition device is arranged opposite to the LED display screen and is used for completing one image data acquisition operation on the LED display screen every set time length so as to obtain and output a corresponding real-time acquisition frame, and the value of the set time length is inversely proportional to the number of LED units of the LED display screen and comprises the following components: the time-sharing acquisition device comprises a time length analysis unit and an acquisition execution unit, and is used for cooperating to complete one-time image data acquisition operation on the LED display screen every set time length so as to obtain and output a corresponding real-time acquisition frame;
the spiced salt removing device is connected with the time-sharing acquisition device and is used for executing spiced salt noise removing processing on the received real-time acquisition frame image so as to obtain and output a corresponding instant denoising image;
a content enhancement device connected with the spiced salt removing device and used for performing image content enhancement processing based on logarithmic transformation on the received instant denoising image so as to obtain and output a corresponding content enhancement image;
a cubic interpolation device connected with the content enhancement device and used for executing cubic polynomial interpolation processing on the received content enhancement image so as to obtain and output a corresponding cubic interpolation image;
the curve processing device is connected with the cubic interpolation device and is used for identifying the occupation area of the LED display screen in the cubic interpolation image, acquiring the area edge curve of the occupation area corresponding to the LED display screen and the edge curve of the standard geometric figure corresponding to the LED display screen, comparing the curve similarity degree of the area edge curve of the occupation area corresponding to the LED display screen and the edge curve of the standard geometric figure corresponding to the LED display screen to determine the deformation degree corresponding to the LED display screen, and comparing the curve similarity degree of the area edge curve of the occupation area corresponding to the LED display screen and the edge curve of the standard geometric figure corresponding to the LED display screen to determine the deformation degree corresponding to the LED display screen comprises: the determined deformation degree corresponding to the LED display screen and the area edge curve of the occupied area corresponding to the LED display screen are positively correlated with the curve similarity degree of the edge curve of the standard geometric figure corresponding to the LED display screen;
the wireless transmission interface is connected with the curve processing device and is used for receiving and wirelessly transmitting the deformation degree corresponding to the LED display screen to a remote equipment management server;
the method for identifying the occupied area of the LED display screen in the cubic interpolation image, acquiring an area edge curve of the occupied area corresponding to the LED display screen and an edge curve of a standard geometric figure corresponding to the LED display screen, and comparing the area edge curve of the occupied area corresponding to the LED display screen with the curve similarity degree of the edge curve of the standard geometric figure corresponding to the LED display screen to determine the deformation degree corresponding to the LED display screen comprises the following steps: and identifying the occupation area of the LED display screen in the cubic interpolation image based on the brightness value distribution interval corresponding to the screen frame body of the LED display screen.
Fig. 2 is a schematic diagram showing an internal structure of an LED display screen deformation degree detection system according to embodiment B of the present invention.
Compared to the LED display screen of the embodiment, the LED display screen deformation degree detection system shown in embodiment B may further include the following components:
a temperature detection device disposed in the vicinity of the salt-pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device and connected to the salt-pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device, respectively;
wherein a temperature detection device disposed in the vicinity of the salt and pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device and connected to the salt and pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device, respectively, comprises: the temperature detection device is used for respectively realizing the field measurement of the current temperatures of the spiced salt removing equipment, the content enhancing equipment, the cubic interpolation equipment and the curve processing device.
Fig. 3 is a schematic diagram showing an internal structure of an LED display screen deformation degree detection system according to embodiment C of the present invention.
Compared to the LED display screen of the embodiment, the LED display screen deformation degree detection system shown in embodiment C may further include the following components:
a voltage detection device disposed in the vicinity of the salt-pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device and connected to the salt-pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device, respectively;
wherein a voltage detection device disposed in the vicinity of the salt-pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device and connected to the salt-pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device, respectively, includes: the voltage detection device is used for respectively realizing field measurement of the current voltage of the spiced salt removing device, the content enhancing device, the cubic interpolation device and the curve processing device.
Next, a further explanation of the specific structure of the LED display screen deformation degree detection system of the present invention will be continued.
In the LED display screen deformation degree detection system according to any one of the embodiments of the present invention:
and performing image data processing on the output data of the spiced salt removing equipment, the content enhancing equipment, the cubic interpolation equipment and the curve processing device by adopting an SOC chip to obtain output processing data respectively corresponding to the spiced salt removing equipment, the content enhancing equipment, the cubic interpolation equipment and the curve processing device.
In the LED display screen deformation degree detection system according to any one of the embodiments of the present invention:
performing image data processing on output data of the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device by using an SOC chip to obtain output processing data respectively corresponding to the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device, wherein the processing data comprises: and performing nearest neighbor interpolation processing on the output data of the spiced salt removing device, the content enhancing device, the cubic interpolation device and the curve processing device to obtain output processing data respectively corresponding to the spiced salt removing device, the content enhancing device, the cubic interpolation device and the curve processing device.
In the LED display screen deformation degree detection system according to any one of the embodiments of the present invention:
performing image data processing on output data of the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device by using an SOC chip to obtain output processing data respectively corresponding to the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device, wherein the processing data comprises: and performing bilinear interpolation processing on the output data of the spiced salt removing device, the content enhancing device, the cubic interpolation device and the curve processing device to obtain output processing data respectively corresponding to the spiced salt removing device, the content enhancing device, the cubic interpolation device and the curve processing device.
In the LED display screen deformation degree detection system according to any one of the embodiments of the present invention:
performing image data processing on output data of the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device by using an SOC chip to obtain output processing data respectively corresponding to the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device, wherein the processing data comprises: and performing bicubic interpolation processing of a 16×16 pixel neighborhood on output data of the salt and pepper removal device, the content enhancement device, the cubic interpolation device and the curve processing device to obtain output processing data corresponding to the salt and pepper removal device, the content enhancement device, the cubic interpolation device and the curve processing device, respectively.
In the LED display screen deformation degree detection system according to any one of the embodiments of the present invention:
performing image data processing on output data of the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device by using an SOC chip to obtain output processing data respectively corresponding to the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device, wherein the processing data comprises: and performing Lanczos interpolation processing of a 4×4 pixel neighborhood on output data of the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device to obtain output processing data respectively corresponding to the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device.
In addition, in the system for detecting deformation degree of the LED display screen, identifying an occupied area of the LED display screen in the cubic interpolation image, obtaining an area edge curve of the occupied area corresponding to the LED display screen and an edge curve of the standard geometric figure corresponding to the LED display screen, and comparing the curve similarity degree of the area edge curve of the occupied area corresponding to the LED display screen and the edge curve of the standard geometric figure corresponding to the LED display screen to determine the deformation degree corresponding to the LED display screen further comprises: the brightness value distribution interval corresponding to the screen frame of the LED display screen is limited by a set brightness upper limit threshold value and a set brightness lower limit threshold value;
and identifying the occupation area of the LED display screen in the cubic interpolation image, acquiring an area edge curve of the occupation area corresponding to the LED display screen and an edge curve of the standard geometric figure corresponding to the LED display screen, and comparing the similarity degree of the area edge curve of the occupation area corresponding to the LED display screen and the curve of the edge curve of the standard geometric figure corresponding to the LED display screen to determine the deformation degree corresponding to the LED display screen further comprises: and (3) identifying the occupied area of the LED display screen in the cubic interpolation image by adopting a numerical simulation mode, acquiring an area edge curve of the occupied area corresponding to the LED display screen and an edge curve of a standard geometric figure corresponding to the LED display screen, and comparing the area edge curve of the occupied area corresponding to the LED display screen with the curve similarity degree of the edge curve of the standard geometric figure corresponding to the LED display screen to determine the simulation and test of the data processing process of the deformation degree corresponding to the LED display screen.
By adopting the LED display screen deformation degree detection system, aiming at the technical problem that the deformation of the LED display screen is tiny and difficult to identify with high precision in the prior art, the occupied area of the LED display screen in the field-optimized image can be identified, the area edge curve of the occupied area and the edge curve of the standard geometric figure corresponding to the LED display screen are obtained, and the similarity degree of the area edge curve of the occupied area and the curve of the edge curve of the standard geometric figure corresponding to the LED display screen is compared to determine the deformation degree corresponding to the LED display screen, so that the deformation degree detection precision of the LED display screen is improved.
Although only certain embodiments of this invention have been described in detail above, those skilled in the art will readily appreciate that many modifications are possible in the embodiments without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of present invention.
Claims (9)
1. A system for detecting a degree of deformation of an LED display screen, the system comprising:
the time-sharing acquisition device is arranged opposite to the LED display screen and is used for completing one-time image data acquisition operation on the LED display screen every set time length so as to obtain and output a corresponding real-time acquisition frame, and the value of the set time length is inversely proportional to the number of LED units of the LED display screen;
the spiced salt removing device is connected with the time-sharing acquisition device and is used for executing spiced salt noise removing processing on the received real-time acquisition frame image so as to obtain and output a corresponding instant denoising image;
a content enhancement device connected with the spiced salt removing device and used for performing image content enhancement processing based on logarithmic transformation on the received instant denoising image so as to obtain and output a corresponding content enhancement image;
a cubic interpolation device connected with the content enhancement device and used for executing cubic polynomial interpolation processing on the received content enhancement image so as to obtain and output a corresponding cubic interpolation image;
the curve processing device is connected with the cubic interpolation device and is used for identifying the occupation area of the LED display screen in the cubic interpolation image, acquiring the area edge curve of the occupation area corresponding to the LED display screen and the edge curve of the standard geometric figure corresponding to the LED display screen, comparing the curve similarity degree of the area edge curve of the occupation area corresponding to the LED display screen and the edge curve of the standard geometric figure corresponding to the LED display screen to determine the deformation degree corresponding to the LED display screen, and comparing the curve similarity degree of the area edge curve of the occupation area corresponding to the LED display screen and the edge curve of the standard geometric figure corresponding to the LED display screen to determine the deformation degree corresponding to the LED display screen comprises: the determined deformation degree corresponding to the LED display screen and the area edge curve of the occupied area corresponding to the LED display screen are positively correlated with the curve similarity degree of the edge curve of the standard geometric figure corresponding to the LED display screen;
and the wireless transmission interface is connected with the curve processing device and is used for receiving and wirelessly transmitting the deformation degree corresponding to the LED display screen to a remote equipment management server.
2. The LED display screen deformation degree detection system according to claim 1, wherein:
identifying the occupation area of the LED display screen in the cubic interpolation image, acquiring an area edge curve of the occupation area corresponding to the LED display screen and an edge curve of the standard geometric figure corresponding to the LED display screen, and comparing the similarity degree of the area edge curve of the occupation area corresponding to the LED display screen and the edge curve of the standard geometric figure corresponding to the LED display screen to determine the deformation degree corresponding to the LED display screen comprises the following steps: and identifying the occupation area of the LED display screen in the cubic interpolation image based on the brightness value distribution interval corresponding to the screen frame body of the LED display screen.
3. The LED display screen deformation degree detection system according to claim 2, further comprising:
a temperature detection device disposed in the vicinity of the salt-pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device and connected to the salt-pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device, respectively;
wherein a temperature detection device disposed in the vicinity of the salt and pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device and connected to the salt and pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device, respectively, comprises: the temperature detection device is used for respectively realizing the field measurement of the current temperatures of the spiced salt removing equipment, the content enhancing equipment, the cubic interpolation equipment and the curve processing device.
4. The LED display screen deformation degree detection system according to claim 2, further comprising:
a voltage detection device disposed in the vicinity of the salt-pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device and connected to the salt-pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device, respectively;
wherein a voltage detection device disposed in the vicinity of the salt-pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device and connected to the salt-pepper removal device, the content enhancement device, the cubic interpolation device, and the curve processing device, respectively, includes: the voltage detection device is used for respectively realizing field measurement of the current voltage of the spiced salt removing device, the content enhancing device, the cubic interpolation device and the curve processing device.
5. The LED display screen deformation degree detection system according to any one of claims 2 to 4, wherein:
and performing image data processing on the output data of the spiced salt removing equipment, the content enhancing equipment, the cubic interpolation equipment and the curve processing device by adopting an SOC chip to obtain output processing data respectively corresponding to the spiced salt removing equipment, the content enhancing equipment, the cubic interpolation equipment and the curve processing device.
6. The LED display screen deformation degree detection system according to claim 5, wherein:
performing image data processing on output data of the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device by using an SOC chip to obtain output processing data respectively corresponding to the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device, wherein the processing data comprises: and performing nearest neighbor interpolation processing on the output data of the spiced salt removing device, the content enhancing device, the cubic interpolation device and the curve processing device to obtain output processing data respectively corresponding to the spiced salt removing device, the content enhancing device, the cubic interpolation device and the curve processing device.
7. The LED display screen deformation degree detection system according to claim 5, wherein:
performing image data processing on output data of the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device by using an SOC chip to obtain output processing data respectively corresponding to the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device, wherein the processing data comprises: and performing bilinear interpolation processing on the output data of the spiced salt removing device, the content enhancing device, the cubic interpolation device and the curve processing device to obtain output processing data respectively corresponding to the spiced salt removing device, the content enhancing device, the cubic interpolation device and the curve processing device.
8. The LED display screen deformation degree detection system according to claim 5, wherein:
performing image data processing on output data of the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device by using an SOC chip to obtain output processing data respectively corresponding to the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device, wherein the processing data comprises: and performing bicubic interpolation processing of a 16×16 pixel neighborhood on output data of the salt and pepper removal device, the content enhancement device, the cubic interpolation device and the curve processing device to obtain output processing data corresponding to the salt and pepper removal device, the content enhancement device, the cubic interpolation device and the curve processing device, respectively.
9. The LED display screen deformation degree detection system according to claim 5, wherein:
performing image data processing on output data of the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device by using an SOC chip to obtain output processing data respectively corresponding to the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device, wherein the processing data comprises: and performing Lanczos interpolation processing of a 4×4 pixel neighborhood on output data of the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device to obtain output processing data respectively corresponding to the salt and pepper removing device, the content enhancing device, the cubic interpolation device and the curve processing device.
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