Set Top Box

[0008] The embodiments of the present invention will be described in detail below.

[0009] The present invention provides a set-top box, which includes a base, a front panel and a rear panel connected to the bottom plate which are respectively arranged at the front and rear ends of the bottom plate, a button mechanism arranged on the front panel, and a button arranged behind the button mechanism PCB board, the base includes a bottom plate, characterized in that a rigid buckle device is provided on one side of the inner side of the front panel, and the other side of the inner side of the front panel opposite to the rigid buckle device is provided with elastic Snap device.

[0010] Preferably, the rigid buckle device is composed of a rigid buckle support frame, a rigid buckle support rib, and any structure of a rigid buckle to form an integrated structure; or the rigid buckle device is composed of a rigid buckle support frame, a rigid buckle support rib and The rigid buckles together form an integral structure; wherein the rigid buckle support frame is fixedly connected with the front panel, the other side of the rigid buckle support frame protrudes the rigid buckle support rib, and the rigid buckle is placed on the top of the rigid buckle support rib.

[0011] More preferably, at least one of the rigid buckle devices is composed of a rigid buckle support frame, a rigid buckle and a rigid buckle support rib.

[0012] The present invention also provides an intelligent robot based on image recognition. The robot includes a manual operation device and a time period setting device. The manual operation device is used to receive control signals input by referees. The time period setting device is connected to the manual operation device. Based on the control signal input by the referee, it is determined whether to provide the referee with an input interface for selecting the playback time period.

[0013] The intelligent robot based on image recognition transforms the specific structure of the instant playback robot in the prior art, and introduces high-adaptive distortion elimination equipment and high-precision image filtering equipment to improve the accuracy of pre-processed images and ensure subsequent ball target recognition and The accuracy of the motion trajectory judgment, the introduction of an automatic control mechanism for playback start, facilitates the operation of the athletes and referees.

[0014] In the first aspect, the manual operation equipment is located below the referee's position, including a challenge button and a challenge button.

[0015] In the second aspect, the manual operation device is used to activate the challenge permission button and the challenge rejection button when receiving the challenge start signal, and send the challenge permission signal when the referee presses the challenge permission button, and send rejection when the referee presses the challenge rejection button Challenge signal.

[0016] In the third aspect, the manual operation device is also used for disabling the challenge permission button and the challenge rejection button when the challenge signal is not activated.

[0017] In the fourth aspect, the time zone setting device includes a touch screen, located below the referee's position, connected to a manual operation device, and used to provide the referee with an input interface for selecting the playback time zone and output the referee when a challenge signal is received. The selected playback time period; the time period setting device is also used to close the input interface for the referee to select the playback time period when the challenge rejection signal is received.

[0018] In the fifth aspect, the robot includes:

[0019] The challenge detection device is located directly below the looking back display device. It is used to detect the posture of the athletes on the badminton court to determine whether the athletes make a challenge action. When it is determined that the athlete has made a challenge action, it outputs a start challenge signal and confirms that the athlete has not issued a challenge. During the action, the challenge signal is not activated;

[0020] Manually operated equipment, located below the referee’s position, connected to the challenge detection equipment, including the challenge permission button and the challenge rejection button, used to activate the challenge permission button and the challenge rejection button when the challenge signal is received, and the referee presses the challenge permission button When the button is pressed, it sends a challenge permission signal, and when the referee presses the challenge rejection button, it sends a challenge rejection signal; the manual operation device is also used to disable the challenge permission button and the challenge rejection button when the challenge signal is not activated;

[0021] Time zone setting equipment, including a touch screen, located below the referee's position, connected to the manual operation device, used to provide the referee with an input interface for selecting the playback time zone when a challenge signal is received, and output the playback time selected by the referee Period; the time period setting device is also used to close the input interface for the referee to select the playback time period when the challenge rejection signal is received;

[0022] Audio collection equipment, located in the badminton court ground, used to collect audio data of the auditorium on the badminton court ground to output the auditorium audio signal;

[0023] Audio denoising equipment, located in the badminton court ground, connected to the audio collection equipment, used to receive the auditorium audio signal and perform noise removal processing on the auditorium audio signal to obtain the denoising frequency signal;

[0024] Audio analysis equipment, located in the badminton court, connected to the audio denoising equipment, used to receive the denoising frequency signal, and perform data analysis on the denoising frequency signal to determine whether there is noisy signal in the denoising frequency signal;

[0025] Audio positioning equipment, located in the badminton court, connected with audio analysis equipment, used to receive the noise-removing signal and noise signal, determine the location of the noise signal in the noise-removing signal as the target position, and based on the distance of the audio collection device The on-site distance of the audience area determines the audience area matching the target orientation as the target audience area, and the auditorium is composed of various audience areas;

[0026] The camera group is composed of multiple high-definition cameras, which are respectively set at different positions of the badminton court. Each high-definition camera includes CCD sensing equipment, gamma correction processing equipment, Gaussian smoothing equipment, median filtering equipment, and image enhancement Processing, distortion type detection equipment, distortion processing equipment, reference point selection equipment, distortion coordinate mapping equipment, distortion grayscale mapping equipment, target recognition equipment and target coordinate extraction equipment;

[0027] Camera calibration equipment, connected with each HD camera, is used to obtain the internal parameters of each HD camera and the external parameters of each HD camera. The internal parameters of each HD camera include the focal length of the HD camera, the size of the CCD sensor device, The distortion degree of the camera lens, the external parameters of each HD camera include the relative position of the HD camera to the badminton court and the shooting direction of the HD camera;

[0028] Coordinate mapping equipment, connected with camera calibration equipment, used to receive the internal parameters of each HD camera and the external parameters of each HD camera, and determine each one based on the internal parameters of each HD camera and the external parameters of each HD camera The mapping relationship between pixel coordinates and three-dimensional world coordinates in the image space of the HD camera;

[0029] Three-dimensional coordinate fitting equipment, used to connect to the target coordinate extraction equipment of multiple high-definition cameras, to receive multiple plane coordinate parameters, and to connect to the camera calibration equipment, to receive pixels in the image space of multiple high-definition cameras The mapping relationship between the point coordinates and the three-dimensional world coordinates. The three-dimensional coordinate fitting device fits the three-dimensional coordinates of the badminton target in the three-dimensional world coordinate system based on the multiple plane coordinate parameters and the corresponding mapping relationships of the multiple high-definition cameras. Output as three-dimensional target coordinates;

[0030] Environment reconstruction equipment, connected to each high-definition camera, used to receive multiple geometric calibration images from multiple high-definition cameras, and reconstruct the environment of the badminton court based on the multiple geometric calibration images to obtain and output the virtual scene of the badminton court;

[0031] The scene fusion device is respectively connected with the environment reconstruction device and the 3D coordinate fitting device, and is used to merge the movement position of the badminton target into the virtual scene based on the 3D target coordinates to obtain and output the fused image frame;

[0032] Look back display device, connect with scene fusion device to receive and play back fused image frames, look back display device includes liquid crystal display, display driver and display buffer;

[0033] Among them, the audio positioning device determines the target azimuth matching audience area as the target audience area based on the on-site distance of the audio collection device from each audience area, including: matching each of the above-mentioned on-site distances with the above-mentioned target azimuth one by one, and corresponding the successfully-matched on-site distances The audience area of ​​as the target audience area;

[0034] Among them, the display driver is also connected to the audio positioning device and the audio analysis device respectively, and is used to push the text information corresponding to the target audience area and the text information corresponding to the presence of noisy to the display buffer for the convenience of the liquid crystal display when the noisy signal is received. Display

[0035] Among them, the display buffer is connected to the liquid crystal display, and the display driver is respectively connected to the display buffer and time period setting device. The display driver is used for receiving the playback time period selected by the referee, according to the playback time period selected by the referee. The fused image frames received at the fusion device are pushed into the display buffer for continuous playback on the LCD.

[0036] In the sixth aspect, in each high-definition camera, the gamma correction processing device is connected with the CCD sensor device to receive the HD image collected by the CCD sensor device, and perform gamma correction processing on the HD image to output the correction Image; CCD sensing equipment is used to collect high-definition data on the badminton court to output high-definition images; Gaussian smoothing equipment is connected with gamma correction processing equipment to receive corrected images and perform Gaussian smoothing on the corrected images to obtain smooth images; The median filtering device is connected to the Gaussian smoothing device, and is used to perform median filtering processing on the smooth image with a 5 pixel × 5 pixel module size to obtain a filtered image; the image enhancement processing is connected to the median filtering device to perform image processing on the filtered image Enhance processing to obtain enhanced images.

[0037] In the seventh aspect, in each high-definition camera, the distortion type detection device is connected to the image enhancement processing for receiving the enhanced image and determining the outline size of the enhanced image based on the outline size of the enhanced image and the outline size of the reference reference image Determine the distortion type of the enhanced image. The distortion types include Hermite transformation distortion, distortion distortion, radial distortion distortion, affine transformation distortion, affine transformation distortion and projection transformation distortion. The reference reference image is the area responsible for the HD camera The undistorted high-definition image output by the pre-high-definition data collection.

[0038] In the eighth aspect, in each high-definition camera, the distortion processing equipment is connected with the distortion type detection equipment, when the received distortion type is Hermite transformation distortion, distortion distortion, radial distortion distortion, affine transformation distortion Or similar affine transformation distortion, different predetermined geometric transformation processing is performed on the enhanced image based on different distortion types to output the geometric calibration image; the reference point selection device is connected with the distortion type detection device to be used when the received distortion type is When the projection transformation is distorted, 6 positions in the badminton court ground are selected as the calibration reference points. The 6 positions are the 4 vertices of the rectangle formed by the two doubles sidelines and the two bottom lines in the badminton court ground and the landing of the two posts of the net. point.

[0039] In the ninth aspect, in each high-definition camera, the distortion coordinate mapping device is respectively connected with the reference point selection device and the distortion type detection device, and is used to determine the coordinates of the 6 positions in the enhanced image and determine the 6 positions in the reference reference image The coordinates of the position, the geometric coordinate transformation matrix is ​​determined based on the coordinates of the 6 positions in the enhanced image and the coordinates of the 6 positions in the reference image, and the geometric coordinate transformation is performed on all pixels of the enhanced image based on the geometric coordinate transformation matrix to obtain the corresponding For multiple new pixels, the horizontal and vertical coordinates of all pixels of the enhanced image are integers, while the horizontal or vertical coordinates of the new pixels are not necessarily integers;

[0040] Among them, in each high-definition camera, the distortion gray scale mapping device is connected with the distortion coordinate mapping device to receive multiple new pixels. When the horizontal and vertical coordinates of the new pixel are both integers, the gray scale of the new pixel is The degree value is the gray value of the pixel at the same coordinate position in the enhanced image. When the horizontal or vertical coordinate of the new pixel is non-integer, it is calculated based on the gray value of multiple pixels around the same coordinate position in the enhanced image The gray value of the new pixel, based on the gray value of multiple new pixels, output a geometric calibration image;

[0041] Among them, in each high-definition camera, the target recognition device is respectively connected with the distortion processing device and the distortion grayscale mapping device to receive the geometric calibration image, and identify the badminton target in the geometric calibration image based on the preset reference badminton pattern; The coordinate extraction device is connected with the target recognition device, and is used for determining the plane coordinate parameters of the badminton target based on the relative position of the recognized badminton target in the entire geometric calibration image.

[0042] In the tenth aspect, the camera calibration equipment is located in the central control room of the badminton court.

[0043] In the eleventh aspect, the coordinate mapping device is located in the central control room of the badminton court.

[0044] In addition, a filter, as the name suggests, is a device that filters waves. "Wave" is a very broad physical concept. In the field of electronic technology, "wave" is narrowly limited to specifically describe the process of fluctuations in the value of various physical quantities over time. This process is converted into a time function of voltage or current through the action of various sensors, which is called the time waveform of various physical quantities or signals. Because the independent variable time is a continuous value, it is called a continuous time signal, and it is also habitually called an analog signal.

[0045] With the emergence and rapid development of digital electronic computer technology, in order to facilitate the computer to process the signal, a complete theory and method of transforming a continuous-time signal into a discrete-time signal under the guidance of the sampling theorem has been produced. In other words, it is possible to express the original signal only with the sample value of the original analog signal at a series of discrete time coordinate points without losing any information. Since the concepts of wave, waveform, and signal express the changes of various physical quantities in the objective world, Nature is the carrier of all kinds of information that modern society depends on. Information needs to be spread by the transmission of waveform signals. The signal may be distorted due to the existence of environment and interference in every link of its generation, conversion, and transmission. Even in quite a few cases, this kind of distortion is still very serious, causing the signal and the information it carries to be deepened. It was buried deep in the noise. In order to filter these noises and restore the original signal, it is necessary to use various filters for filtering processing.

[0046] Using the intelligent robot based on image recognition of the present invention, in view of the technical problems of low accuracy and insufficient functions of the instant playback robot in the prior art, the performance of image processing is improved by integrating various high-precision image preprocessing equipment, and accurate playback is integrated Start the control equipment to improve the automation level of the instant playback robot, and realize the judgment and position recognition of the abnormal situation of the auditorium through the on-site detection equipment, thereby solving the above technical problems.

[0047] It can be understood that although the present invention has been disclosed as above in preferred embodiments, the above-mentioned embodiments are not intended to limit the present invention. For anyone skilled in the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or modified into equivalent changes, etc. Efficacies. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments without departing from the technical solution of the present invention based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.