CN114625333A - Liquid crystal splicing LCD system and method capable of recording gesture instructions for control - Google Patents
Liquid crystal splicing LCD system and method capable of recording gesture instructions for control Download PDFInfo
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Abstract
A liquid crystal splicing LCD system and method capable of recording gesture instructions for control comprises the following steps: acquiring gesture video image information in front of a liquid crystal splicing LCD; preprocessing gesture video image information, and forming a one-dimensional characteristic vector by adopting discrete Fourier transform and continuous phase modulation of a zero-order elliptic spherical wave signal; inputting the preprocessed gesture video image information feature vectors into a trained deep neural network; and recognizing the gesture and the gesture key point by the neural network, and further determining the operation type to finish the operation. According to the invention, through the combination of the discrete Fourier transform and the continuous phase modulation of the zero-order elliptic spherical wave signal and the fault-tolerant setting, the accuracy and the speed of the gesture command operation are improved, so that the user experience is improved.
Description
Technical Field
The invention relates to the technical field of computer vision, in particular to a liquid crystal splicing LCD method and system capable of recording gesture instructions for control.
Background
At present, with the rapid development of electronic technology, LCD liquid crystal tiled screens are widely used more and more, the position and angle of an LCD picture are adjusted in real time through gestures, and the display effect according to an actual scene is more and more concerned, which is a hot spot of much attention in the field of computer vision and human-computer interaction in recent years.
In the prior art, although the LCD gesture records are used for controlling, the effect of the LCD gesture records on the aspect of gesture control positioning precision and speed is not obvious; the realization of the high fusion matching of the gesture and the image display of the LCD splicing screen is the key for realizing the flow operation. However, in the prior art, a technology for appropriately matching gesture recognition and an LCD spliced screen picture is provided, and how to enable the spliced screen gesture operation to be more intelligent and humanized, improve the operation efficiency and enhance the comfort of a user becomes a new research subject, but the information matching accuracy and efficiency of the existing gesture operation technology are lower; and the acquisition of the feature vector is not ideal, and acquisition of information of gesture key points and fault-tolerant mechanism setting are not available, so that an enhanced display matching technology capable of increasing the intelligent degree of a gesture operation LCD splicing screen is an urgent need for improving the LCD effect, and the user experience is improved.
Disclosure of Invention
In order to solve the technical problems, the invention provides the liquid crystal splicing LCD method and the liquid crystal splicing LCD system capable of recording the gesture instruction for control.
The technical scheme is realized as follows:
a liquid crystal splicing LCD method capable of recording gesture instructions for control comprises the following steps: acquiring gesture video image information in front of a liquid crystal splicing LCD; preprocessing gesture video image information, extracting time-frequency domain and space domain characteristics by adopting discrete Fourier transform and continuous phase modulation of a zero-order elliptic spherical wave signal, and connecting the characteristics of each domain end to form a one-dimensional characteristic vector; inputting the preprocessed gesture video image information feature vectors into the trained deep neural network; recognizing a gesture and a gesture key point by the deep neural network;
when the gesture key point is single click ((x1+ s, y1+ s), T1+ T1)
When the gesture key point is double-click: ((x1+ s, y1+ s), T1+ T1) & ((x1+ s, y1+ s), T2+ T1)
The key points of the gesture are long press times: ((x1+ s, y1+ s), T1-T2+ T1)
The key points of the gesture are that when dragging: ((x1+ s, y1+ s), T1-T2+ T1) - ((x2+ s, y2+ s), T3+ T1)
When the gesture key points are sliding: (x1+ s, T1+ T1) - (x2+ s, T2+ T2);
wherein x1 represents the abscissa of the gesture keypoint in the LCD video image pixel axis and y1 represents the ordinate of the gesture keypoint in the LCD video image pixel axis; s represents an operation accuracy fault tolerance threshold; t1 represents a response time fault-tolerant threshold, an operation accuracy fault-tolerant threshold and a response time fault-tolerant threshold which are different for different people, T1 represents a time point of a first touch of a gesture key point in an LCD video image pixel axis, and T2 represents a time point of a second touch of the gesture key point in the LCD video image pixel axis; x2 represents the abscissa of the gesture keypoint after exceeding a threshold time T in the LCD video image pixel axis; y2 represents the ordinate of the gesture keypoint after exceeding the threshold time T in the LCD video image pixel axis; t2 represents a response time tolerance threshold beyond threshold time T.
Preferably, the preprocessing the gesture video image information further includes filtering, denoising and feature extraction on the gesture video frame image information.
Preferably, before the features of each domain are connected end to form a one-dimensional feature vector, the method further comprises a normalization processing module of LCD video frame data, which is used for performing normalization processing on the posture and gesture video frame data of the person before the LCD screen is acquired.
Preferably, before the step of acquiring the image information in front of the display surface, the method further comprises an LCD model number judging module for determining the information of the LCD splicing number, size and resolution.
Preferably, the operation accuracy fault-tolerant threshold and the response time fault-tolerant threshold of different people are different and are determined according to the ages, the sexes and historical gesture operation records of people.
The invention also comprises a liquid crystal splicing LCD system capable of recording the gesture instruction for control, which comprises a liquid crystal splicing LCD video image acquisition module used for acquiring gesture video image information in front of the liquid crystal splicing LCD; the LCD preprocessing module is used for preprocessing gesture video image information, extracting time-frequency domain and space domain characteristics by adopting discrete Fourier transform and continuous phase modulation of a zero-order elliptic spherical wave signal, and connecting the characteristics of each domain end to form a one-dimensional characteristic vector; the deep neural network recognition module is used for inputting the preprocessed gesture video image information feature vectors into the trained deep neural network; the gesture key point output module is used for recognizing a gesture and a gesture key point by the deep neural network; gesture key point judgment module includes:
when the gesture key point is single click ((x1+ s, y1+ s), T1+ T1)
When the gesture key point is double-click: ((x1+ s, y1+ s), T1+ T1) & ((x1+ s, y1+ s), T2+ T1)
The key points of the gesture are long press: ((x1+ s, y1+ s), T1-T2+ T1)
The key points of the gesture are that when dragging: ((x1+ s, y1+ s), T1-T2+ T1) - ((x2+ s, y2+ s), T3+ T1)
When the gesture key points are sliding: (x1+ s, T1+ T1) - (x2+ s, T2+ T2);
wherein x1 represents the abscissa of the gesture keypoint in the LCD video image pixel axis and y1 represents the ordinate of the gesture keypoint in the LCD video image pixel axis; s represents an operation accuracy fault tolerance threshold; t1 represents a response time fault-tolerant threshold, an operation accuracy fault-tolerant threshold and a response time fault-tolerant threshold which are different for different people, T1 represents a time point of a first touch of a gesture key point in an LCD video image pixel axis, and T2 represents a time point of a second touch of the gesture key point in the LCD video image pixel axis; x2 represents the abscissa of the gesture keypoint after exceeding a threshold time T in the LCD video image pixel axis; y2 represents the ordinate of the gesture keypoint after exceeding the threshold time T in the LCD video image pixel axis; t2 represents a response time tolerance threshold beyond threshold time T.
Preferably, the preprocessing the gesture video image information further includes filtering, denoising and feature extraction on the gesture video frame image information.
Preferably, before the features of each domain are connected end to form a one-dimensional feature vector, the method further comprises a normalization processing module of LCD video frame data, which is used for performing normalization processing on the posture and gesture video frame data of the person before the LCD screen is acquired.
Preferably, before the step of acquiring the image information in front of the display surface, the method further comprises an LCD model number judging module for determining the information of the LCD splicing number, size and resolution.
Preferably, the operation accuracy fault-tolerant threshold and the response time fault-tolerant threshold of different people are different and are determined according to the ages, the sexes and historical gesture operation records of people.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the invention solves the problems that the acquisition of the feature vector is not ideal, and the acquisition of the information of the gesture key points and the fault-tolerant mechanism setting are not available in the traditional technology; the method adopts discrete Fourier transform and continuous phase modulation of zero-order elliptic spherical wave signals to extract one-dimensional characteristic vectors, thereby greatly improving the processing efficiency of gesture control LCD splicing screen; inputting the preprocessed gesture video image information feature vectors into a trained deep neural network, and recognizing gestures and gesture key points by the deep neural network, so that the problem that only single feature is emphasized in the traditional technology is solved; the operation accuracy is improved by setting the operation accuracy fault-tolerant threshold and the response time fault-tolerant threshold, so that the operation efficiency and accuracy are greatly improved by controlling the LCD splicing screen through the gesture, and the user experience is improved.
Drawings
FIG. 1 is a diagram of a liquid crystal tiled LCD system capable of recording gesture commands for control according to the present invention.
Detailed Description
Those skilled in the art understand that, as mentioned in the background, the conventional existing gesture operation technology has low information matching accuracy and efficiency; and the acquisition of the feature vector is not ideal, and acquisition of information of gesture key points and fault-tolerant mechanism setting are not available, so that an enhanced display matching technology capable of increasing the intelligent degree of a gesture operation LCD splicing screen is an urgent need for improving the LCD effect, and the user experience is improved. In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Example 1:
a liquid crystal splicing LCD method capable of recording gesture instructions for control comprises the following steps: acquiring gesture video image information in front of a liquid crystal splicing LCD; preprocessing gesture video image information, extracting time-frequency domain and space domain characteristics by adopting discrete Fourier transform and continuous phase modulation of a zero-order elliptic spherical wave signal, and connecting the characteristics of each domain end to form a one-dimensional characteristic vector; inputting the preprocessed gesture video image information feature vectors into a trained deep neural network; recognizing a gesture and a gesture key point by a neural network;
when the gesture key point is single click ((x1+ s, y1+ s), T1+ T1)
When the gesture key point is double-click: ((x1+ s, y1+ s), T1+ T1) & ((x1+ s, y1+ s), T2+ T1)
The key points of the gesture are long press times: ((x1+ s, y1+ s), T1-T2+ T1)
The key points of the gesture are that when dragging: ((x1+ s, y1+ s), T1-T2+ T1) - ((x2+ s, y2+ s), T3+ T1)
When the gesture key points are sliding: (x1+ s, T1+ T1) - (x2+ s, T2+ T2);
wherein x1 represents the abscissa of the gesture keypoint in the LCD video image pixel axis and y1 represents the ordinate of the gesture keypoint in the LCD video image pixel axis; s represents an operation accuracy fault tolerance threshold; t1 represents a response time fault-tolerant threshold value, an operation accuracy fault-tolerant threshold value and a response time fault-tolerant threshold value of different people are different, T1 represents a time point of a first touch screen of a gesture key point in an LCD video image pixel axis, and T2 represents a time point of a second touch screen of the gesture key point in the LCD video image pixel axis; x2 represents the abscissa of the gesture keypoint after exceeding a threshold time T in the LCD video image pixel axis; y2 represents the ordinate of the gesture keypoint after exceeding the threshold time T in the LCD video image pixel axis; t2 represents the response time tolerance threshold after exceeding the threshold time T.
Preferably, the preprocessing the gesture video image information further includes filtering, denoising and feature extraction on the gesture video frame image information.
In some embodiments, before the connecting the features of each domain end to form a one-dimensional feature vector, the method further includes a normalization processing module for normalizing the pose and gesture video frame data of the person before the LCD screen is acquired.
In some embodiments, before the step of acquiring the image information in front of the display surface, the method further includes an LCD model number determining module that determines the LCD splicing number, size, and resolution information.
In some embodiments, the operation accuracy tolerance threshold and the response time tolerance threshold of different people are different and are determined according to the ages, the sexes and historical gesture operation records of people.
Example 2:
the invention also comprises a liquid crystal splicing LCD system capable of recording the gesture instruction for control, which comprises a liquid crystal splicing LCD video image acquisition module used for acquiring gesture video image information in front of the liquid crystal splicing LCD; the LCD preprocessing module is used for preprocessing gesture video image information, extracting time-frequency domain and space domain characteristics by adopting discrete Fourier transform and continuous phase modulation of a zero-order elliptic spherical wave signal, and connecting the characteristics of each domain end to form a one-dimensional characteristic vector; the deep neural network recognition module is used for inputting the preprocessed gesture video image information feature vectors into the trained deep neural network; the gesture key point output module is used for recognizing the gesture and the gesture key points by the neural network; gesture key point judgment module includes:
when the gesture key point is single click ((x1+ s, y1+ s), T1+ T1)
When the gesture key point is double-click: ((x1+ s, y1+ s), T1+ T1) & ((x1+ s, y1+ s), T2+ T1)
The key points of the gesture are long press times: ((x1+ s, y1+ s), T1-T2+ T1)
The key points of the gesture are that when dragging: ((x1+ s, y1+ s), T1-T2+ T1) - ((x2+ s, y2+ s), T3+ T1)
When the gesture key points are sliding: (x1+ s, T1+ T1) - (x2+ s, T2+ T2);
wherein x1 represents the abscissa of the gesture keypoint in the LCD video image pixel axis and y1 represents the ordinate of the gesture keypoint in the LCD video image pixel axis; s represents an operation accuracy fault tolerance threshold; t1 represents a response time fault-tolerant threshold value, an operation accuracy fault-tolerant threshold value and a response time fault-tolerant threshold value of different people are different, T1 represents a time point of a first touch screen of a gesture key point in an LCD video image pixel axis, and T2 represents a time point of a second touch screen of the gesture key point in the LCD video image pixel axis; x2 represents the abscissa of the gesture keypoint after exceeding a threshold time T in the LCD video image pixel axis; y2 represents the ordinate of the gesture keypoint after exceeding the threshold time T in the LCD video image pixel axis; t2 represents a response time tolerance threshold beyond threshold time T.
In some embodiments, the preprocessing the gesture video image information further includes filtering and denoising the gesture video frame image information, and extracting features.
In some embodiments, before the features of each domain are connected end to form a one-dimensional feature vector, the method further includes a normalization processing module for normalizing the pose and gesture video frame data of the person before the LCD screen is acquired.
In some embodiments, before the step of acquiring the image information in front of the display surface, the method further includes an LCD model number determining module that determines the LCD splicing number, size, and resolution information.
In some embodiments, the operation accuracy tolerance threshold and the response time tolerance threshold of different people are different and are determined according to the ages, the sexes and historical gesture operation records of people.
The invention solves the problems that the acquisition of the feature vector is not ideal, and the acquisition of the information of the gesture key points and the fault-tolerant mechanism setting are not available in the traditional technology; the method adopts discrete Fourier transform and continuous phase modulation of zero-order elliptic spherical wave signals to extract one-dimensional characteristic vectors, thereby greatly improving the processing efficiency of gesture control LCD splicing screen; inputting the preprocessed gesture video image information feature vectors into a trained deep neural network, and recognizing gestures and gesture key points by the deep neural network, so that the problem that only single feature is emphasized in the traditional technology is solved; the operation accuracy is improved by setting the operation accuracy fault-tolerant threshold and the response time fault-tolerant threshold, so that the operation efficiency and accuracy are greatly improved by controlling the LCD splicing screen through the gesture, and the user experience is improved.
As will be appreciated by one of skill in the art, the embodiments of the present application may be provided as a method, system, or computer program product and as such, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A liquid crystal splicing LCD method capable of recording gesture instructions for control is characterized by comprising the following steps: acquiring gesture video image information in front of a liquid crystal splicing LCD; preprocessing gesture video image information, extracting time-frequency domain and space domain characteristics by adopting discrete Fourier transform and continuous phase modulation of a zero-order elliptic spherical wave signal, and connecting the characteristics of each domain end to form a one-dimensional characteristic vector; inputting the preprocessed gesture video image information feature vectors into a trained deep neural network; recognizing a gesture and a gesture key point by the deep neural network;
when the gesture key point is single click ((x1+ s, y1+ s), T1+ T1)
When the gesture key point is double-click: ((x1+ s, y1+ s), T1+ T1) & ((x1+ s, y1+ s), T2+ T1)
The key points of the gesture are long press times: ((x1+ s, y1+ s), T1-T2+ T1)
When the gesture key points are dragged: ((x1+ s, y1+ s), T1-T2+ T1) - ((x2+ s, y2+ s), T3+ T1)
When the gesture key points are sliding: (x1+ s, T1+ T1) - (x2+ s, T2+ T2);
wherein x1 represents the abscissa of the gesture keypoint in the LCD video image pixel axis, y1 represents the ordinate of the gesture keypoint in the LCD video image pixel axis, t1 represents the time point of the first touch screen of the gesture keypoint in the LCD video image pixel axis, and t2 represents the time point of the second touch screen of the gesture keypoint in the LCD video image pixel axis; s represents an operation accuracy fault tolerance threshold; t1 represents a response time tolerance threshold, which is different from one person to another in terms of operation accuracy and response time tolerance; x2 represents the abscissa of the gesture keypoint after exceeding a threshold time T in the LCD video image pixel axis; y2 represents the ordinate of the gesture keypoint after exceeding the threshold time T in the LCD video image pixel axis; t2 represents a response time tolerance threshold beyond threshold time T.
2. The LCD method capable of recording gesture commands for control according to claim 1, wherein the preprocessing the gesture video image information further comprises filtering, denoising and feature extraction of the gesture video frame image information.
3. The LCD method for liquid crystal splicing according to claim 2, further comprising a normalization processing module for normalizing the gesture and gesture video frame data of the person before the acquisition of the LCD screen before the end-to-end connection of the features of the respective domains to form a one-dimensional feature vector.
4. The LCD splicing method capable of being controlled by the recorded gesture command as claimed in claim 1, further comprising an LCD model number judging module for determining LCD splicing number, size and resolution information before the step of obtaining the image information in front of the display surface.
5. The LCD method for recording gesture instructions to control according to claim 1, wherein the operation accuracy tolerance threshold and the response time tolerance threshold of different people are different and determined according to the age, gender and historical gesture operation records of people.
6. A liquid crystal splicing LCD system capable of recording gesture instructions for control is characterized by comprising a liquid crystal splicing LCD video image acquisition module, a gesture video image processing module and a gesture processing module, wherein the liquid crystal splicing LCD video image acquisition module is used for acquiring gesture video image information in front of a liquid crystal splicing LCD; the LCD preprocessing module is used for preprocessing gesture video image information, extracting time-frequency domain and space domain characteristics by adopting discrete Fourier transform and continuous phase modulation of a zero-order elliptic spherical wave signal, and connecting the characteristics of each domain end to form a one-dimensional characteristic vector; the deep neural network recognition module is used for inputting the preprocessed gesture video image information feature vectors into the trained deep neural network; the gesture key point output module is used for recognizing a gesture and a gesture key point by the deep neural network; gesture key point judgment module includes:
when the gesture key point is single click ((x1+ s, y1+ s), T1+ T1)
When the gesture key point is double-click: ((x1+ s, y1+ s), T1+ T1) & ((x1+ s, y1+ s), T2+ T1)
The key points of the gesture are long press times: ((x1+ s, y1+ s), T1-T2+ T1)
The key points of the gesture are that when dragging: ((x1+ s, y1+ s), T1-T2+ T1) - ((x2+ s, y2+ s), T3+ T1)
When the gesture key points are sliding: (x1+ s, T1+ T1) - (x2+ s, T2+ T2);
wherein x1 represents the abscissa of the gesture keypoint in the LCD video image pixel axis and y1 represents the ordinate of the gesture keypoint in the LCD video image pixel axis; s represents an operation accuracy fault tolerance threshold; t1 represents a response time fault-tolerant threshold value, an operation accuracy fault-tolerant threshold value and a response time fault-tolerant threshold value of different people are different, T1 represents a time point of a first touch screen of a gesture key point in an LCD video image pixel axis, and T2 represents a time point of a second touch screen of the gesture key point in the LCD video image pixel axis; x2 represents the abscissa of the gesture keypoint after exceeding a threshold time T in the LCD video image pixel axis; y2 represents the ordinate of the gesture keypoint after exceeding the threshold time T in the LCD video image pixel axis; t2 represents a response time tolerance threshold beyond threshold time T.
7. The LCD method capable of recording gesture commands for control according to claim 1, wherein the preprocessing the gesture video image information further comprises filtering, denoising and feature extraction of the gesture video frame image information.
8. The LCD method for liquid crystal splicing controlled by a recordable gesture command as claimed in claim 2, further comprising a LCD video frame data normalization processing module for performing normalization processing on the gesture of the person and the gesture video frame data before the LCD screen is obtained before the features of each domain are connected end to form a one-dimensional feature vector.
9. The LCD splicing method capable of being controlled by the recorded gesture command as claimed in claim 1, further comprising an LCD model number judging module for determining LCD splicing number, size and resolution information before the step of obtaining the image information in front of the display surface.
10. The LCD method for recording gesture instructions to control according to claim 1, wherein the operation accuracy tolerance threshold and the response time tolerance threshold of different people are different and determined according to the age, gender and historical gesture operation records of people.
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