CN111901550A - Signal restoration system using content analysis - Google Patents
Signal restoration system using content analysis Download PDFInfo
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- CN111901550A CN111901550A CN202010702698.7A CN202010702698A CN111901550A CN 111901550 A CN111901550 A CN 111901550A CN 202010702698 A CN202010702698 A CN 202010702698A CN 111901550 A CN111901550 A CN 111901550A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N5/9201—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal
- H04N5/9202—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a sound signal
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/20—Analysis of motion
- G06T7/246—Analysis of motion using feature-based methods, e.g. the tracking of corners or segments
- G06T7/248—Analysis of motion using feature-based methods, e.g. the tracking of corners or segments involving reference images or patches
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10481—Improvement or modification of read or write signals optimisation methods
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/95—Computational photography systems, e.g. light-field imaging systems
- H04N23/951—Computational photography systems, e.g. light-field imaging systems by using two or more images to influence resolution, frame rate or aspect ratio
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10016—Video; Image sequence
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/10537—Audio or video recording
- G11B2020/10546—Audio or video recording specifically adapted for audio data
- G11B2020/10555—Audio or video recording specifically adapted for audio data wherein the frequency, the amplitude, or other characteristics of the audio signal is taken into account
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/10537—Audio or video recording
- G11B2020/10546—Audio or video recording specifically adapted for audio data
- G11B2020/10555—Audio or video recording specifically adapted for audio data wherein the frequency, the amplitude, or other characteristics of the audio signal is taken into account
- G11B2020/10574—Audio or video recording specifically adapted for audio data wherein the frequency, the amplitude, or other characteristics of the audio signal is taken into account volume or amplitude
Abstract
The present invention relates to a signal restoration system using content analysis, the system comprising: the wind sound eliminating mechanism is used for executing audio signal phase reversal counteracting operation on the wind sound detected in the audio recording mechanism when the received violent change level is greater than a preset level threshold value; the audio recording mechanism is used for executing audio recording operation on the field living environment where the field recording mechanism is located while the wind sound eliminating mechanism executes the wind sound audio signal anti-phase counteracting operation; and the field recording mechanism is used for executing continuous image shooting action on the field living environment where the field recording mechanism is located. The signal restoration system utilizing content analysis has simple principle and compact design. The wind sound counteracting action in the audio signal recorded along with the wind sound counteracting action can be started in time when the intensity of the change of the field shooting field video content is detected to be too high, so that the definition of the field recording audio signal is improved.
Description
Technical Field
The present invention relates to the field of signal analysis, and more particularly, to a signal restoration system using content analysis.
Background
Digital signal processing is developed in the 60 th century, and the design of a circuit and a filter is simulated by an electronic computer in Bell laboratories and the institute of technology, Massachusetts, and the development foundation of the digital filter is laid. In the middle of the 60 s, the fast fourier transform was invented, so that the calculation speed of fourier analysis of spectrum analysis was increased by more than one hundred times, thereby achieving the purpose of spectrum analysis by using an electronic computer, laying a practical foundation for signal and system analysis, and forming a basic method and concept of digital signal processing with digital filtering and fast fourier transform as central contents. The term digital signal processing was introduced in the scientific field since the 70 s.
With the rapid development of digital computers, the theory and method of signal processing has also been developed. In the front of our, a purely mathematical process, namely an algorithm, which is not limited by physics appears, and the field of signal processing is established. Now, for Signal processing, one usually converts an analog Signal into a Digital Signal and then performs Digital Signal processing on the Digital Signal by using an efficient Digital Signal Processor (DSP) or a computer.
Disclosure of Invention
In order to solve the related technical problems in the prior art, the invention provides a signal restoration system utilizing content analysis, which can start wind sound counteracting action in audio signals recorded along with the wind sound counteracting action in time when the intensity of the change of field shooting field video content is detected to be too high, thereby truly restoring field sound information except the wind sound signals in the field and ensuring the definition of the field recorded audio signals.
Therefore, the invention needs to have the following two important points:
(1) a wind sound eliminating mechanism is arranged in the audio recording mechanism to realize wind sound counteracting operation on the recording sound of the current scene, so that the definition of the audio information recorded by the scene accompanying video is ensured;
(2) when the fact that the picture content in the multi-frame images shot in a connecting line changes violently is detected, the fact that a moving target exists in the current shooting scene is judged, at the moment, a wind sound eliminating mechanism in the audio recording mechanism is started to achieve wind sound counteracting operation on sound recording of the current scene, and therefore energy consumption of field electronic equipment is reduced.
According to an aspect of the present invention, there is provided a signal restoring system using content analysis, the system including:
the wind sound eliminating mechanism is positioned in the audio recording mechanism and used for executing audio signal anti-phase counteracting operation on the wind sound detected in the audio recording mechanism when the received violent change level is greater than a preset level threshold value;
the audio recording mechanism is arranged on the field recording mechanism and is used for executing audio recording operation on the field living environment where the field recording mechanism is located while the wind sound eliminating mechanism executes the wind sound audio signal anti-phase counteracting operation;
the outdoor recording mechanism is used for executing continuous image shooting actions on the outdoor living environment where the outdoor living environment is located so as to obtain and output a plurality of image frames;
the signal capturing device is connected with the field recording mechanism and is used for capturing a current image frame corresponding to the current moment and a plurality of adjacent image frames in a preset number before the current moment and outputting the current image frame and the adjacent image frames as images to be processed;
the sharpening processing equipment is arranged on the right side of the signal capturing equipment, is connected with the signal capturing equipment, and is used for receiving each image to be processed, and executing image signal enhancement processing d based on exponential transformation on each image to be processed to obtain a corresponding reference image so as to output each reference image corresponding to each image to be processed;
the parameter identification mechanism is connected with the sharpening processing equipment and used for calculating the intensity degree of the image content change among the reference images so as to obtain a change intensity grade corresponding to the intensity degree;
the wind sound eliminating mechanism comprises signal detection equipment, signal analysis equipment and anti-phase counteracting equipment, wherein the signal analysis equipment is respectively connected with the signal detection equipment and the anti-phase counteracting equipment;
wherein the signal detection device is used for detecting a sound signal inside the audio recording mechanism, and the signal analysis device is used for detecting the amplitude and the phase of a wind sound signal component in the sound signal;
wherein the anti-phase cancelling apparatus is configured to perform an anti-phase cancelling operation on the wind sound signal component in the sound signal to remove the wind sound signal component in the sound signal based on the detected amplitude and phase of the wind sound signal component.
The signal restoration system utilizing content analysis has simple principle and compact design. The wind sound counteracting action in the audio signal recorded along with the wind sound counteracting action can be started in time when the intensity of the change of the field shooting field video content is detected to be too high, so that the definition of the field recording audio signal is improved.
Drawings
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram illustrating a signal restoration system using content analysis according to an embodiment of the present invention.
Detailed Description
Embodiments of a signal restoring system using content analysis according to the present invention will be described in detail with reference to the accompanying drawings.
Multimedia (Multimedia) is a composite of multiple media, generally including multiple media forms such as text, sound, and images.
In a computer system, multimedia refers to a man-machine interactive information exchange and dissemination medium that combines two or more media. The media used include text, pictures, photos, sounds, animations and movies, and the interactive functions provided by the programs.
The multimedia technology is a technology for storing and managing various information such as language characters, data, audio, video and the like through a computer and enabling a user to communicate information with the computer in real time through various senses. The contents displayed and carried by the multimedia technology are actually products of the computer technology.
By medium is meant a carrier that carries or transports information or material of some kind. Can be divided into five categories: sensory media, presentation media, storage media, and transmission media. In the computer field, media are mainly carriers for transmitting and storing information, and transmitted information includes language characters, data, video, audio and the like; carriers for storage include hard disks, floppy disks, magnetic tape, magnetic disks, optical disks, and the like. The multimedia is to scientifically integrate the functions of various media, and provide various forms of information display for users by combining hands, so that the obtained information is more visual and vivid.
Currently, recording of multimedia including audio signals and video signals in a field environment is performed due to the harsh field environment, so that the recorded multimedia signals cannot meet the recording requirements of recording films, and particularly, the recording requirements of high-definition multimedia signals become more urgent in the case of important scenes in which moving objects such as moving animals appear.
In order to overcome the defects, the invention builds a signal restoration system by utilizing content analysis, and can effectively solve the corresponding technical problem.
Fig. 1 is a schematic structural diagram illustrating a signal restoration system using content analysis according to an embodiment of the present invention, the system including:
the wind sound eliminating mechanism is positioned in the audio recording mechanism and used for executing audio signal anti-phase counteracting operation on the wind sound detected in the audio recording mechanism when the received violent change level is greater than a preset level threshold value;
the audio recording mechanism is arranged on the field recording mechanism and is used for executing audio recording operation on the field living environment where the field recording mechanism is located while the wind sound eliminating mechanism executes the wind sound audio signal anti-phase counteracting operation;
the outdoor recording mechanism is used for executing continuous image shooting actions on the outdoor living environment where the outdoor living environment is located so as to obtain and output a plurality of image frames;
the signal capturing device is connected with the field recording mechanism and is used for capturing a current image frame corresponding to the current moment and a plurality of adjacent image frames in a preset number before the current moment and outputting the current image frame and the adjacent image frames as images to be processed;
the sharpening processing equipment is arranged on the right side of the signal capturing equipment, is connected with the signal capturing equipment, and is used for receiving each image to be processed, and executing image signal enhancement processing d based on exponential transformation on each image to be processed to obtain a corresponding reference image so as to output each reference image corresponding to each image to be processed;
the parameter identification mechanism is connected with the sharpening processing equipment and used for calculating the intensity degree of the image content change among the reference images so as to obtain a change intensity grade corresponding to the intensity degree;
the wind sound eliminating mechanism comprises signal detection equipment, signal analysis equipment and anti-phase counteracting equipment, wherein the signal analysis equipment is respectively connected with the signal detection equipment and the anti-phase counteracting equipment;
wherein the signal detection device is used for detecting a sound signal inside the audio recording mechanism, and the signal analysis device is used for detecting the amplitude and the phase of a wind sound signal component in the sound signal;
wherein the anti-phase cancelling apparatus is configured to perform an anti-phase cancelling operation on the wind sound signal component in the sound signal to remove the wind sound signal component in the sound signal based on the detected amplitude and phase of the wind sound signal component.
Next, a specific configuration of the signal restoration system using content analysis according to the present invention will be further described.
In the signal restoration system using content analysis:
calculating the severity of the image content variation between the reference images comprises: and taking the position with the same pixel value of the pixel point at the same position among the reference images as a content invariant position, and taking other positions as content variation positions, wherein the less the content invariant position is, the higher the intensity of the image content variation among the reference images is.
In the signal restoration system using content analysis:
obtaining a severity level of change corresponding to the severity level includes: the higher the intensity, the higher the intensity level of the change obtained.
The signal restoration system using content analysis may further include:
and the protective shell is used for accommodating the audio recording mechanism and the field recording mechanism so as to realize the protective operation of the audio recording mechanism and the field recording mechanism.
In the signal restoration system using content analysis:
the protective shell is provided with a first opening and a second opening which are used for aligning the audio recording mechanism and the radio port and the video recording port of the field recording mechanism respectively.
The signal restoration system using content analysis may further include:
and the load detection equipment is used for receiving the utilization rate of the current core of the clarification processing equipment, and the utilization rate is a percentage.
The signal restoration system using content analysis may further include:
the data identification equipment is connected with the load detection equipment and is used for sending a load overfill signal when the utilization rate exceeds the limit;
wherein the data discrimination apparatus is further configured to signal a sufficient load when the received utilization is not exceeded.
The signal restoration system using content analysis may further include:
the MCU controller is connected with the data identification equipment and is used for entering a working mode from a sleep mode when receiving a load overfill signal;
the MCU controller is also used for bearing partial tasks of the sharpening processing equipment when entering the working mode;
and the MCU controller is also used for refusing to undertake part of tasks of the sharpening processing equipment when entering the sleep mode.
The signal restoration system using content analysis may further include:
and the WIFI communication equipment is connected with the parameter identification mechanism and used for receiving the output data of the parameter identification mechanism and wirelessly transmitting the output data.
An integrated circuit (integrated circuit) is a type of microelectronic device or component. The elements such as transistor, resistor, capacitor and inductor and wiring required in a circuit are interconnected together by adopting a certain process, manufactured on one or a plurality of small semiconductor wafers or medium substrates, and then packaged in a tube shell to form a micro structure with the required circuit function; all the elements are structurally integrated, so that the electronic elements are greatly miniaturized, low in power consumption, intelligent and high in reliability.
The larger the scale of the integrated circuit, the more difficult it is to build a system to change to address these issues for specific requirements. Therefore, an Application Specific Integrated Circuit (ASIC) featuring user-added design has emerged, which can achieve an optimized design of the entire system, with superior performance and high security. The application specific integrated circuit can integrate the functions of a plurality of, dozens of or even hundreds of universal medium and small integrated circuits which respectively bear some functions on one chip, and further integrate the whole system on one chip to realize the needs of the system. The circuit of the whole machine is optimized, the number of elements is reduced, wiring is shortened, the volume and the weight are reduced, and the reliability of the system is improved.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A signal restoration system using content analysis, comprising:
the wind sound eliminating mechanism is positioned in the audio recording mechanism and used for executing audio signal anti-phase counteracting operation on the wind sound detected in the audio recording mechanism when the received violent change level is greater than a preset level threshold value;
the audio recording mechanism is arranged on the field recording mechanism and is used for executing audio recording operation on the field living environment where the field recording mechanism is located while the wind sound eliminating mechanism executes the wind sound audio signal anti-phase counteracting operation;
the outdoor recording mechanism is used for executing continuous image shooting actions on the outdoor living environment where the outdoor living environment is located so as to obtain and output a plurality of image frames;
the signal capturing device is connected with the field recording mechanism and is used for capturing a current image frame corresponding to the current moment and a plurality of adjacent image frames in a preset number before the current moment and outputting the current image frame and the adjacent image frames as images to be processed;
the sharpening processing equipment is arranged on the right side of the signal capturing equipment, is connected with the signal capturing equipment, and is used for receiving each image to be processed, and executing image signal enhancement processing d based on exponential transformation on each image to be processed to obtain a corresponding reference image so as to output each reference image corresponding to each image to be processed;
the parameter identification mechanism is connected with the sharpening processing equipment and used for calculating the intensity degree of the image content change among the reference images so as to obtain a change intensity grade corresponding to the intensity degree;
the wind sound eliminating mechanism comprises signal detection equipment, signal analysis equipment and anti-phase counteracting equipment, wherein the signal analysis equipment is respectively connected with the signal detection equipment and the anti-phase counteracting equipment;
wherein the signal detection device is used for detecting a sound signal inside the audio recording mechanism, and the signal analysis device is used for detecting the amplitude and the phase of a wind sound signal component in the sound signal;
wherein the anti-phase cancelling apparatus is configured to perform an anti-phase cancelling operation on the wind sound signal component in the sound signal to remove the wind sound signal component in the sound signal based on the detected amplitude and phase of the wind sound signal component.
2. The signal restoring system using contents analysis according to claim 1, wherein:
calculating the severity of the image content variation between the reference images comprises: and taking the position with the same pixel value of the pixel point at the same position among the reference images as a content invariant position, and taking other positions as content variation positions, wherein the less the content invariant position is, the higher the intensity of the image content variation among the reference images is.
3. The signal restoring system using contents analysis according to claim 2, wherein:
obtaining a severity level of change corresponding to the severity level includes: the higher the intensity, the higher the intensity level of the change obtained.
4. The signal restoration system using content analysis according to claim 3, wherein the system further comprises:
and the protective shell is used for accommodating the audio recording mechanism and the field recording mechanism so as to realize the protective operation of the audio recording mechanism and the field recording mechanism.
5. The signal restoring system using content analysis according to claim 4, wherein:
the protective shell is provided with a first opening and a second opening which are used for aligning the audio recording mechanism and the radio port and the video recording port of the field recording mechanism respectively.
6. The signal restoration system using content analysis according to claim 5, wherein the system further comprises:
and the load detection equipment is used for receiving the utilization rate of the current core of the clarification processing equipment, and the utilization rate is a percentage.
7. The signal restoration system using content analysis according to claim 6, wherein the system further comprises:
the data identification equipment is connected with the load detection equipment and is used for sending a load overfill signal when the utilization rate exceeds the limit;
wherein the data discrimination apparatus is further configured to signal a sufficient load when the received utilization is not exceeded.
8. The signal restoration system using content analysis according to claim 7, wherein the system further comprises:
the MCU controller is connected with the data identification equipment and is used for entering a working mode from a sleep mode when receiving a load overfill signal;
the MCU controller is also used for bearing partial tasks of the sharpening processing equipment when entering the working mode;
and the MCU controller is also used for refusing to undertake part of tasks of the sharpening processing equipment when entering the sleep mode.
9. The signal restoration system using content analysis according to claim 8, wherein the system further comprises:
and the WIFI communication equipment is connected with the parameter identification mechanism and used for receiving the output data of the parameter identification mechanism and wirelessly transmitting the output data.
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| CN202010702698.7A CN111901550A (en) | 2020-07-21 | 2020-07-21 | Signal restoration system using content analysis |
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| CN109671430A (en) * | 2018-12-03 | 2019-04-23 | 珠海格力电器股份有限公司 | A kind of method of speech processing and device |
| CN110210774A (en) * | 2019-06-10 | 2019-09-06 | 中国地质调查局西安地质调查中心 | Landslide risk evaluation method and system |
| CN110383373A (en) * | 2017-02-06 | 2019-10-25 | 消音器设备有限公司 | It is eliminated using the noise that segment frequence dependent phase is offset |
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2020
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| CN1530929A (en) * | 2003-02-21 | 2004-09-22 | 哈曼贝克自动系统-威美科公司 | System for inhibitting wind noise |
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| CN104616662A (en) * | 2015-01-27 | 2015-05-13 | 中国科学院理化技术研究所 | Active noise reduction method and device |
| CN110383373A (en) * | 2017-02-06 | 2019-10-25 | 消音器设备有限公司 | It is eliminated using the noise that segment frequence dependent phase is offset |
| CN109671430A (en) * | 2018-12-03 | 2019-04-23 | 珠海格力电器股份有限公司 | A kind of method of speech processing and device |
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