CN112887512A - Video stream high score visualization system - Google Patents
Video stream high score visualization system Download PDFInfo
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- CN112887512A CN112887512A CN202110106768.7A CN202110106768A CN112887512A CN 112887512 A CN112887512 A CN 112887512A CN 202110106768 A CN202110106768 A CN 202110106768A CN 112887512 A CN112887512 A CN 112887512A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
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Abstract
A video stream high-resolution visualization system comprises a video stream acquisition request, an original video stream cache, a video stream video image enhancement module and a high-definition video playing end device, wherein the video stream acquisition request can acquire required video stream resources rapidly and accurately, the video stream video image enhancement module processes video stream images through a space domain method and a frequency domain method through reasonable distribution and storage, the purpose of image enhancement is achieved, the contrast ratio, noise point filtration and the like are improved, high-resolution video images are provided, the processed video stream cache module stores the processed video data into a high-speed cache card, a user thread acquires corresponding cache data in the high-speed cache card through corresponding addresses and timestamps, the video reading and writing speed is improved, the cache space is reasonably distributed and utilized, the system overhead is reduced, the video fluency and the data integrity are ensured, and the high-definition video playing end device ensures the playing effect of high-resolution videos, so that the efficacy of the system can be embodied.
Description
Technical Field
The invention relates to the technical field of video image processing, in particular to a video stream high-resolution visualization system.
Background
With the development of internet technology, the transmission of multimedia information on the internet becomes more and more important, and the streaming technology is deeply favored by industries such as education, entertainment, advertisement and the like due to the characteristic that the streaming technology downloads and plays simultaneously; video streaming refers to the transmission of video data that can be handled as a steady and continuous stream through a network. Because of the streaming, the client browser or plug-in is able to display the multimedia data before the entire file is transferred.
At present, when a user requests required audio and video data, due to the performance limitation of a server of a high-resolution video server, the quality of the video, and the problem of a cache mechanism of a client, the received video stream is played in a stuck and not smooth enough or the picture is distorted
Disclosure of Invention
Objects of the invention
In order to solve the technical problems existing in the background technology, the invention provides a video stream high-resolution visualization system, which comprises a request acquisition video stream, an original video stream cache, a video stream video image enhancement, a processed video stream cache module and a high-definition video playing end device, can quickly and accurately acquire required video stream resources, can enhance the video stream video image by reasonably distributing and storing, processes the video stream image by a space domain method and a frequency domain method, improves the contrast, filters noise points and the like, achieves the aim of image enhancement, provides high-resolution video images, stores the processed video data into a high-speed cache card by the processed video stream cache module, acquires corresponding cache data in the high-speed cache card by a user thread through corresponding addresses and timestamps, improves the video reading and writing speed, reasonably distributes and utilizes the cache space, and reduces the system overhead, the video smoothness and data integrity are guaranteed, the high-definition video playing end equipment guarantees the playing effect of the high-resolution video, and the effect of the system is reflected.
(II) technical scheme
In order to solve the above problems, the present invention provides a video stream high score visualization system, which includes requesting to obtain a video stream, and obtaining required video stream resources through a uniform resource identifier of the video stream;
caching an original video stream, namely allocating memory equipment capable of containing received video data as a caching module, and storing the video data into the caching module;
enhancing video stream video images, processing the video stream images by a spatial domain method and a frequency domain method, improving contrast, filtering noise points and the like, and achieving the purpose of image enhancement;
the processed video stream caching module stores the processed video data into a cache card, marks a caching address and a timestamp, and obtains corresponding caching data in the cache card through a user thread according to the corresponding address and the timestamp; sending the acquired video stream data to a client corresponding to the user thread, and releasing the cache data after the sending is finished;
high definition audio-visual broadcast end equipment, the video stream image definition after making an uproar and image enhancement is higher, needs high definition audio-visual broadcast equipment to play and experiences.
Preferably, the parameters of the uniform resource identifier include a type of the video stream, a name of the video stream, and an identifier of the video stream, and the type of the video stream includes: channel video streams, program video streams, video on demand video streams, digital video recorder video streams, and device video streams; the identifier of the video stream includes: an identifier of a channel programme, an episode identifier, a time identifier and a media device identifier.
Preferably, the original video stream cache is matched with the minimum preset memory capacity capable of storing the video data in each preset memory capacity according to the capacity of the video data, and the cache block is released in time after the acquired video data in the cache module is sent to the client corresponding to the client thread, so that the cache module is managed by the memory reasonably and orderly.
Preferably, the method for enhancing the video image in the video stream comprises the following steps: basic gray scale transformation, which maps pixel values of an image from one range to another range, including linear transformation, logarithmic transformation, power transformation and the like; histogram processing, namely converting an original image to obtain a pair of gray level histograms, and based on probability theory, converting the histograms by using gray point operation so as to achieve the purpose of image enhancement, wherein the dynamic range of the image can be effectively improved by histogram homogenization, the contrast is improved, and the details can be better recognized by human eyes; smoothing spatial filtering, namely filtering image noise and smoothing an image through linear smoothing filtering including mean filtering and the like and nonlinear smoothing filtering such as median filtering; sharpening spatial filtering, which is the opposite of smoothing spatial filtering, is mainly implemented by first-order and second-order sharpening filters, and is to highlight details in an image or enhance blurred details, and sharpening spatial filtering, which uses a gradient method or lapra operator filtering and other sharpenable spatial filtering to improve image details.
Preferably, the frequency domain image enhancement of video stream video image enhancement is to convert the image into a frequency domain as a two-dimensional signal to perform filtering enhancement operation, the conversion method comprises fourier transform, walsh-bohadamard transform, cosine transform, K-L transform, wavelet transform and the like, low-pass filtering is performed through a butterworth low-pass filter and a gaussian low-pass filter to achieve the purpose of denoising, and the high-pass filtering achieves the purpose of improving the details of the image but also brings amplification of noise.
Preferably, the high-definition video and audio playing device may be one of a notebook, a tablet, a television, and a mobile phone, and the screen resolution of the high-definition video and audio playing device is at least 1920x 1080.
The technical scheme of the invention has the following beneficial technical effects: the request for obtaining the video stream can rapidly and accurately obtain the required video stream resource, the original video stream is cached, by allocating memory devices capable of holding received video data as a buffer module, video streaming video image enhancement, the video stream image is processed by a space domain method and a frequency domain method, the contrast is improved, noise points are filtered, and the like, so that the aim of image enhancement is fulfilled, to provide high resolution video images, the processed video stream cache module stores the processed video data into the cache card, the user thread obtains the corresponding cache data in the cache card through the corresponding address and the timestamp, the video reading and writing speed is improved, and the buffer space is reasonably distributed and utilized, the system overhead is reduced, the video smoothness and the data integrity are ensured, and the high-definition audio-video playing end equipment ensures the playing effect of the high-resolution video, so that the system effect is embodied.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Example 1
The invention provides a video stream high-score visualization system, which comprises a request acquisition module, a request display module and a video stream display module, wherein the request acquisition module is used for requesting to acquire a video stream and acquiring required video stream resources through a uniform resource identifier of the video stream;
caching an original video stream, namely allocating memory equipment capable of containing received video data as a caching module, and storing the video data into the caching module;
enhancing video stream video images, processing the video stream images by a spatial domain method and a frequency domain method, improving contrast, filtering noise points and the like, and achieving the purpose of image enhancement;
the processed video stream caching module stores the processed video data into a cache card, marks a caching address and a timestamp, and obtains corresponding caching data in the cache card through a user thread according to the corresponding address and the timestamp; sending the acquired video stream data to a client corresponding to the user thread, and releasing the cache data after the sending is finished;
high definition audio-visual broadcast end equipment, the video stream image definition after making an uproar and image enhancement is higher, needs high definition audio-visual broadcast equipment to broadcast and experiences
Preferably, the parameters of the uniform resource identifier include a type of the video stream, a name of the video stream, and an identifier of the video stream, and the type of the video stream includes: channel video streams, program video streams, video on demand video streams, digital video recorder video streams, and device video streams; the identifier of the video stream includes: an identifier of a channel programme, an episode identifier, a time identifier and a media device identifier.
Preferably, the original video stream cache is matched with the minimum preset memory capacity capable of storing the video data in each preset memory capacity according to the capacity of the video data, and the cache block is released in time after the acquired video data in the cache module is sent to the client corresponding to the client thread, so that the cache module is managed by the memory reasonably and orderly.
Preferably, the method for enhancing the video image in the video stream comprises the following steps: basic gray scale transformation, which maps pixel values of an image from one range to another range, including linear transformation, logarithmic transformation, power transformation and the like; histogram processing, namely converting an original image to obtain a pair of gray level histograms, and based on probability theory, converting the histograms by using gray point operation so as to achieve the purpose of image enhancement, wherein the dynamic range of the image can be effectively improved by histogram homogenization, the contrast is improved, and the details can be better recognized by human eyes; smoothing spatial filtering, namely filtering image noise and smoothing an image through linear smoothing filtering including mean filtering and the like and nonlinear smoothing filtering such as median filtering; sharpening spatial filtering, which is the opposite of smoothing spatial filtering, is mainly implemented by first-order and second-order sharpening filters, and is to highlight details in an image or enhance blurred details, and sharpening spatial filtering, which uses a gradient method or lapra operator filtering and other sharpenable spatial filtering to improve image details.
Preferably, the frequency domain image enhancement of video stream video image enhancement is to convert the image into a frequency domain as a two-dimensional signal to perform filtering enhancement operation, the conversion method comprises fourier transform, walsh-bohadamard transform, cosine transform, K-L transform, wavelet transform and the like, low-pass filtering is performed through a butterworth low-pass filter and a gaussian low-pass filter to achieve the purpose of denoising, and the high-pass filtering achieves the purpose of improving the details of the image but also brings amplification of noise.
Preferably, the high-definition video and audio playing device may be one of a notebook, a tablet, a television, and a mobile phone, and the screen resolution of the high-definition video and audio playing device is at least 1920x 1080.
When in work, the required video stream resource can be rapidly and accurately acquired by requesting to acquire the video stream, the original video stream is cached, by allocating memory devices capable of holding received video data as a buffer module, video streaming video image enhancement, the video stream image is processed by a space domain method and a frequency domain method, the contrast is improved, noise points are filtered, and the like, so that the aim of image enhancement is fulfilled, to provide high resolution video images, the processed video stream cache module stores the processed video data into the cache card, the user thread obtains the corresponding cache data in the cache card through the corresponding address and the timestamp, the video reading and writing speed is improved, and the buffer space is reasonably distributed and utilized, the system overhead is reduced, the video smoothness and the data integrity are ensured, and the high-definition audio-video playing end equipment ensures the playing effect of the high-resolution video, so that the system effect is embodied.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (6)
1. A video stream high score visualization system is characterized by comprising a request for obtaining a video stream, and obtaining required video stream resources through a uniform resource identifier of the video stream;
caching an original video stream, namely allocating memory equipment capable of containing received video data as a caching module, and storing the video data into the caching module;
enhancing video stream video images, processing the video stream images by a spatial domain method and a frequency domain method, improving contrast, filtering noise points and the like, and achieving the purpose of image enhancement;
the processed video stream caching module stores the processed video data into a cache card, marks a caching address and a timestamp, and obtains corresponding caching data in the cache card through a user thread according to the corresponding address and the timestamp; sending the acquired video stream data to a client corresponding to the user thread, and releasing the cache data after the sending is finished;
high definition audio-visual broadcast end equipment, the video stream image definition after making an uproar and image enhancement is higher, needs high definition audio-visual broadcast equipment to play and experiences.
2. The video stream high score visualization system according to claim 1, wherein the parameters of the uniform resource identifier include a type of the video stream, a name of the video stream, and an identifier of the video stream, and the type of the video stream includes: channel video streams, program video streams, video on demand video streams, digital video recorder video streams, and device video streams; the identifier of the video stream includes: an identifier of a channel programme, an episode identifier, a time identifier and a media device identifier.
3. The video stream high score visualization system according to claim 1, wherein a minimum preset memory capacity capable of storing the video data in each preset memory capacity is matched in an original video stream cache according to the capacity of the video data, and after the obtained video data in the cache module is sent to a client corresponding to a client thread, the cache block is released in time, and the cache module is managed by memory reasonably and orderly.
4. The video stream high score visualization system according to claim 1, wherein the spatial domain enhancement method for video stream video image enhancement comprises: basic gray scale transformation, which maps pixel values of an image from one range to another range, including linear transformation, logarithmic transformation, power transformation and the like; histogram processing, namely converting an original image to obtain a pair of gray level histograms, and based on probability theory, converting the histograms by using gray point operation so as to achieve the purpose of image enhancement, wherein the dynamic range of the image can be effectively improved by histogram homogenization, the contrast is improved, and the details can be better recognized by human eyes; smoothing spatial filtering, namely filtering image noise and smoothing an image through linear smoothing filtering including mean filtering and the like and nonlinear smoothing filtering such as median filtering; sharpening spatial filtering, which is the opposite of smoothing spatial filtering, is mainly implemented by first-order and second-order sharpening filters, and is to highlight details in an image or enhance blurred details, and sharpening spatial filtering, which uses a gradient method or lapra operator filtering and other sharpenable spatial filtering to improve image details.
5. The video stream high-resolution visualization system according to claim 1, wherein the frequency domain image enhancement of the video stream video image enhancement is to transform the image into the frequency domain as a two-dimensional signal to perform a filtering enhancement operation, the transform method includes fourier transform, walsh-bohadamard transform, cosine transform, K-L transform, wavelet transform, etc., and the low-pass filtering is performed through a butterworth low-pass filter and a gaussian low-pass filter to achieve the purpose of denoising, and the high-pass filtering achieves the purpose of enhancing the details of the image, but also brings amplification of noise.
6. The system for high-resolution visualization of video streams of claim 1, wherein the high-definition video playback device is selected from a notebook, a tablet, a tv, and a mobile phone, and the screen resolution of the high-definition video playback device is at least 1920x 1080.
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| CN202110106768.7A CN112887512A (en) | 2021-01-26 | 2021-01-26 | Video stream high score visualization system |
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Cited By (1)
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| CN115086706A (en) * | 2022-08-19 | 2022-09-20 | 摩尔线程智能科技(北京)有限责任公司 | Data caching method and chip |
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