CN101790064A - Hard disk video equipment with video structural description function and method thereof - Google Patents
Hard disk video equipment with video structural description function and method thereof Download PDFInfo
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Abstract
The invention relates to hard disk video equipment with video structural description function, which comprises a pickup unit, an image acquisition unit and an image analysis and judgment module, wherein the pickup unit is connected with the image analysis and judgment module through the image acquisition unit. The invention also relates to a hard disk video method for realizing the video structural description function by using the equipment. By adopting the hard disk video equipment with the video structural description function and the method thereof, specific coding and storage on the monitored video can be performed, and structural description of monitored video image information is realized, so that description information about the attribute and content of the monitored video image information is generated; the structure is simple and practical, and meanwhile the processing process is quick and convenient; the description information can be used for browsing and quick search; and a small data quantity facilitates storage and network transmission, the utilization efficiency of video information is greatly improved, the labor cost is reduced, the working performance is stable and reliable, and the application range is broad.
Description
Technical field
The present invention relates to image record field, particularly video image record analysis technical field specifically is meant a kind of hard disc recording Apparatus for () and method therefor with video structural description function.
Background technology
DVR is a video recording memory device commonly used in the present video monitoring system, and its function is the monitor video image is carried out compressed encoding and to be stored on the hard disk.There are following shortcomings in traditional DVR:
(1) monitoring video is non-structured data, can't carry out query and search, wants to obtain useful information and can only rely on the mode of manually watching piecemeal, and operating efficiency is low;
(2) data volume of monitoring video is big, and its storage and Network Transmission are brought a lot of inconvenience, can't realize effective information sharing.
If can carry out intellectual analysis to monitor video, and generation just can obtain corresponding video image by its data of description is retrieved and inquired about about the description of its attribute and content.Simultaneously, because data of description is the high level overview to video content, its data volume is little, and the resource that storage and transmission take is few, can realize real information sharing.
Chinese invention patent (application number: 200810161985.0) disclose a kind of video summary description scheme by the metadata description video summary.A kind of hierachical summary describing plan (DS) has been adopted in this invention, and hierachical summary describing plan comprises a highlight grade DS at least, and optionally comprises summary topic list DS.Video summary provides navigation feature and function of browse, and makes that retrieving needed video content effectively has possibility.Chinese invention patent (application number: 200710062778.5) disclose a kind of search method and system,, can satisfy the demand of multimedia characteristic similarity distance metric, realized the compound query of multimedia feature by this invention at the MPEG-7 file.Chinese invention patent CN 1266635C discloses a kind of Streaming Media searching system of the remote teaching field based on MPEG-7, has very strong portability, supports the Streaming Media retrieval in long-distance education field.Chinese invention patent (application number: 200910050916.7) provide a kind of DVR and facial image grasping means that facial image grasps function that have, directly finish portrait photo's collecting work, reduced the workload of artificial playback, screening and extracting.
Though have the technology of some video presentation aspects to have the DVR of specific function at present in the prior art, also do not have to carry out structured analysis, differentiate and further describe monitor video the DVR of function with some.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, provide a kind of and can carry out that structured analysis is differentiated, simple and practical, processing procedure is efficient and convenient, stable and reliable working performance, the scope of application have video structural description function comparatively widely hard disc recording Apparatus for () and method therefor monitor video.
In order to realize above-mentioned purpose, the hard disc recording Apparatus for () and method therefor with video structural description function of the present invention is as follows:
This has the hard disc recording equipment of video structural description function, and its main feature is that described hard disc recording equipment comprises:
Image unit obtains the monitor video image information from the external world, for this hard disc recording equipment provides the image source;
Image acquisition units is connected with described image unit, gathers the monitor video image information that described image unit obtains in real time;
The graphical analysis discrimination module is connected with described image acquisition units, and the monitor video image information of real-time collection is carried out feature extraction and discriminant classification.
This graphical analysis discrimination module that has in the hard disc recording equipment of video structural description function comprises:
The image segmentation unit is connected with described image acquisition units, and the monitor video image information of real-time collection is cut apart, and obtains the experimental process image;
Feature extraction unit is connected with described image segmentation unit, extracts the feature of described subimage;
The discriminant classification unit is connected with described feature extraction unit, and the feature of subimage is carried out discriminant classification.
This has the visual signature that is characterized as this subimage of the subimage that the feature extraction unit in the hard disc recording equipment of video structural description function extracts.
This has color, texture, shape, motion, location and contour feature that visual signature in the hard disc recording equipment of video structural description function comprises image.
This classification judging unit that has in the hard disc recording equipment of video structural description function carries out discriminant classification to the feature of subimage, is specially:
Described discriminant classification unit mates according to the feature of described subimage and the feature in the feature knowledge storehouse, to the attribute of this subimage with content is judged and reasoning.
This image segmentation unit and feature extraction unit that has in the hard disc recording equipment of video structural description function is digital signal processing module.
This has in the hard disc recording equipment of video structural description function and also comprises:
Description unit is connected with described graphical analysis discrimination module, and the result that this graphical analysis discrimination module is produced is described, and produces the data of description information about image attributes and content.
This data of description information that has in the hard disc recording equipment of video structural description function can be XML language or binary XML language.
This image unit that has in the hard disc recording equipment of video structural description function is a monitoring camera.
This utilizes above-mentioned equipment to realize having the hard disc video recording method of video structural description function, and its main feature is that described method may further comprise the steps:
(1) described image acquisition units is from the corresponding monitor video image information of described image unit collection;
(2) the graphical analysis discrimination module carries out feature extraction and discriminant classification processing to the monitor video image information of real-time collection.
This realization has that the monitor video image information to real-time collection in the hard disc video recording method of video structural description function is carried out feature extraction and discriminant classification is handled, and may further comprise the steps:
(11) described image segmentation unit is divided into the plurality of sub image to this monitor video image information according to the edge of things in the described monitor video image information;
(12) described feature extraction unit is carried out feature extraction to described subimage, obtains the feature of this subimage;
(13) described discriminant classification unit mates according to the feature of this subimage and the feature in the feature knowledge storehouse, to the attribute of the feature of this subimage with content is judged and reasoning.
This realization has in the hard disc video recording method of video structural description function further comprising the steps of:
(3) described description unit is described characteristic information and the discriminant classification result who is extracted, and produces the data of description information about image attributes and content.
Adopted the hard disc recording Apparatus for () and method therefor with video structural description function of this invention, because wherein by the monitor video image information is carried out the video structural analysis and distinguishing, and further carry out the structural description record according to this structured analysis discrimination result, thereby can carry out specific code storage to monitor video, but also realized structural description to the monitor video image information, thereby produced descriptor about its attribute and content, not only itself is simple and practical, processing procedure is efficient and convenient simultaneously, this descriptor can be used for browsing and retrieval fast, and data volume is little, conveniently store and Network Transmission, improved the utilization ratio of video information greatly, reduced cost of labor, stable and reliable working performance, the scope of application are comparatively extensive.
Description of drawings
Fig. 1 is the composition schematic diagram of a kind of execution mode of the hard disc recording equipment with video structural description function of the present invention.
Fig. 2 has the operation principle schematic diagram of the hard disc video recording method of video structural description function for realization of the present invention.
Embodiment
In order more to be expressly understood technology contents of the present invention, describe in detail especially exemplified by following examples.
See also shown in Figure 1ly, this has the hard disc recording equipment of video structural description function, comprising:
(1) image unit obtains the monitor video image information from the external world, for this hard disc recording equipment provides the image source; This image unit is a monitoring camera;
(2) image acquisition units is connected with described image unit, gathers the monitor video image information that described image unit obtains in real time;
(3) graphical analysis discrimination module is connected with described image acquisition units, and the monitor video image information of real-time collection is carried out feature extraction and discriminant classification, comprising:
(a) image segmentation unit is connected with described image acquisition units, and the monitor video image information of real-time collection is cut apart, and obtains the experimental process image;
(b) feature extraction unit is connected with description unit with described image segmentation unit respectively, extracts the feature of described subimage; The visual signature that is characterized as this subimage of the subimage that this feature extraction unit is extracted, this visual signature comprise color, texture, shape, motion, location and the contour feature of image;
(c) discriminant classification unit is connected with description unit with described feature extraction unit respectively, and the feature of subimage is carried out discriminant classification, is specially:
Described discriminant classification unit mates according to the feature of described subimage and the feature in the feature knowledge storehouse, to the attribute of this subimage with content is judged and reasoning.
(4) wherein this equipment can also comprise description unit, be connected with described graphical analysis discrimination module, the result that this graphical analysis discrimination module is produced is described, and producing data of description information about image attributes and content, this data of description information can be XML language or binary XML language.
See also shown in Figure 2ly again, this utilizes above-mentioned equipment to realize having the hard disc video recording method of video structural description function, comprising following steps:
(1) described image acquisition units is from the corresponding monitor video image information of described image unit collection;
(2) the graphical analysis discrimination module carries out feature extraction and discriminant classification processing to the monitor video image information of real-time collection, may further comprise the steps:
(a) described image segmentation unit is divided into the plurality of sub image to this monitor video image information according to the edge of things in the described monitor video image information;
(b) described feature extraction unit is carried out feature extraction to described subimage, obtains the feature of this subimage;
(c) described discriminant classification unit mates according to the feature of this subimage and the feature in the feature knowledge storehouse, to the attribute of the feature of this subimage with content is judged and reasoning;
Wherein can also may further comprise the steps:
(3) described description unit is described characteristic information and the discriminant classification result who is extracted, and produces the data of description information about image attributes and content.
In the middle of reality was used, technical problem solved by the invention can realize by the following technical solutions:
This has the DVR of video structural description function, the video information of obtaining from image unit in order to storage, and video information carried out structured analysis, differentiation and description.Wherein, it comprises video structure fractional analysis, differentiation and descriptive system, and in order to video information is carried out structured analysis, differentiation and description, this video structure fractional analysis, differentiation and descriptive system comprise:
Image acquisition units is connected with described image unit, the image information of obtaining in order to the described image unit of real-time collection.
Described video structural description system also comprises:
The image segmentation unit is cut apart in order to the image that image acquisition units is gathered in real time, is divided into the experimental process image;
Feature extraction unit is in order to extract the feature of subimage;
The discriminant classification unit is used for the feature of subimage is carried out discriminant classification;
Description unit, the result who produces in order to feature and discriminant classification unit to subimage is described, and produces the data of description about image attributes and content.
As a preferred embodiment of the present invention, the characteristics of image that described feature extraction unit is extracted is a visual feature of image, the color that mainly comprises image, texture, shape, motion, location and contour feature, described discriminant classification unit according to characteristics of image to its attribute with content is judged and reasoning, described description unit is described the feature of subimage and the result of discriminant classification unit generation, generation is about the data of description of image attributes and content, in the discriminant classification process, when in detecting video, anomalous event occurring, DVR is carried out Realtime Alerts and is handled data of description employing XML language, binary XML language is write.
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with specific embodiment, further set forth the present invention.
Embodiment 1
See also shown in Figure 1ly, wherein for a kind of DVR with video structural description function, it comprises video structure fractional analysis, differentiation and descriptive system.This video structure fractional analysis, differentiation and descriptive system comprise: image unit 11, image acquisition units 12, image segmentation unit 13, feature extraction unit 14, discriminant classification unit 15, description unit 16.Below set forth the function and the course of work of each unit respectively.
[image unit]
[image acquisition units]
[image segmentation unit]
The video image that image segmentation unit 13 is gathered image acquisition units 12 according to the edge of things in the image is divided into the plurality of sub image.The image segmentation unit is a Digital Signal Processing (DSP) module in the present embodiment.
[feature extraction unit]
The subimage that obtains after 14 pairs of described image segmentation of process of feature extraction unit unit 13 is handled carries out feature extraction, the feature of extracting in the present embodiment comprises: main color (Dominant Color), scalable color (Scalable Color), region shape (Region Shape), even grain features such as (Homogenous Texture), its function realize also being finished by a Digital Signal Processing (DSP) module.
[discriminant classification unit]
The characteristics of image that discriminant classification unit 15 extracts according to feature extraction unit 14 carries out discriminant classification and reasoning, and antithetical phrase image attributes and content are judged and reasoning.
[description unit]
The characteristics of image that the result of 16 pairs of discriminant classification unit 15 of description unit and feature extraction unit 14 are extracted is described, and produces the data of description about image attributes and content, and this data of description adopts the XML language to encode.
See also shown in Figure 2ly again, video structural description system work process of the present invention is as follows:
At first, image acquisition units collects piece image; Secondly, the image segmentation unit is cut apart this image, is divided into the experimental process image; Once more, feature extraction unit is carried out feature extraction to the subimage that comprises a dry goods, obtains the region shape feature (Region Shape) of this subimage; Next, the discriminant classification unit mates according to the feature in this feature and the knowledge base, and the content of judging this subimage is a horse; At last, description unit is described the result of region shape feature (Region Shape) data and discriminant classification, produces data of description as shown in the figure.
The DVR with video structural description function that adopts present embodiment to provide not only can be finished IMAQ, coding, memory function, and can carry out intelligent analysis and description to monitor video.The benefit of doing like this is:
At first, can search fast and retrieve according to video description data, such as: retrieval " horse " this keyword just can find camera lens or the scene that comprises horse in the video fast;
Secondly, can realize intelligent monitoring and warning function, such as: in a single day can preestablish, occur horse in the monitoring scene, DVR is just reported to the police automatically.
Embodiment 2
The most basic core part as technical scheme of the present invention, present embodiment 2 only is with the difference of embodiment 1, in the present embodiment 2, described video structural analysis and distinguishing system can only comprise image unit 11, image acquisition units 12, image segmentation unit 13, feature extraction unit 14, discriminant classification unit 15, and omitted description unit; The function of this each unit of scheme is identical with embodiment 1 with the course of work; Simultaneously, utilize the device of present embodiment 2 to realize having in the hard disc video recording method of video structural description function, in its step (3) " description unit is described characteristic information and the discriminant classification result who is extracted; and generation is about the data of description information of image attributes and content " can correspondingly omit, thereby can realize separately video information is carried out the function that structured analysis is differentiated.
The main application of present embodiment 2 is to carry out structured analysis, understanding, reasoning and judgement to the content of monitor video, thereby solved monitor video is carried out the technical problem that structured analysis is differentiated, and has obtained the corresponding techniques effect.Wherein video image information is not carried out final structural description, but it can independently realize video structural intellectual analysis, differentiation and the warning function of image information, and can combine, thereby obtain more extended use with other graphical analysis application and recording equipment.
Adopted above-mentioned hard disc recording Apparatus for () and method therefor with video structural description function, because wherein by the monitor video image information is carried out the video structural analysis and distinguishing, and further carry out the structural description record according to this structured analysis discrimination result, thereby can carry out specific code storage to monitor video, but also realized structural description to the monitor video image information, thereby produced descriptor about its attribute and content, not only itself is simple and practical, processing procedure is efficient and convenient simultaneously, this descriptor can be used for browsing and retrieval fast, and data volume is little, conveniently store and Network Transmission, improved the utilization ratio of video information greatly, reduced cost of labor, stable and reliable working performance, the scope of application are comparatively extensive.
In this specification, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (11)
1. the hard disc recording equipment with video structural description function is characterized in that, described hard disc recording equipment comprises:
Image unit obtains the monitor video image information from the external world, for this hard disc recording equipment provides the image source;
Image acquisition units is connected with described image unit, gathers the monitor video image information that described image unit obtains in real time;
The graphical analysis discrimination module is connected with described image acquisition units, and the monitor video image information of real-time collection is carried out feature extraction and discriminant classification.
2. the hard disc recording equipment with video structural description function according to claim 1 is characterized in that, described graphical analysis discrimination module comprises:
The image segmentation unit is connected with described image acquisition units, and the monitor video image information of real-time collection is cut apart, and obtains the experimental process image;
Feature extraction unit is connected with described image segmentation unit, extracts the feature of described subimage;
The discriminant classification unit is connected with described feature extraction unit, and the feature of subimage is carried out discriminant classification.
3. the hard disc recording equipment with video structural description function according to claim 2 is characterized in that, the visual signature that is characterized as this subimage of the subimage that described feature extraction unit is extracted.
4. the hard disc recording equipment with video structural description function according to claim 3 is characterized in that described visual signature comprises color, texture, shape, motion, location and the contour feature of image.
5. the hard disc recording equipment with video structural description function according to claim 2 is characterized in that, described classification judging unit carries out discriminant classification to the feature of subimage, is specially:
Described discriminant classification unit mates according to the feature of described subimage and the feature in the feature knowledge storehouse, to the attribute of the feature of this subimage with content is judged and reasoning.
6. the hard disc recording equipment with video structural description function according to claim 1 is characterized in that, also comprises in the described hard disc recording equipment:
Description unit is connected with described graphical analysis discrimination module, and the result that this graphical analysis discrimination module is produced is described, and produces the data of description information about image attributes and content.
7. the hard disc recording equipment with video structural description function according to claim 6 is characterized in that, described data of description information is XML language or binary XML language.
8. according to each described hard disc recording equipment in the claim 1 to 7, it is characterized in that described image unit is a monitoring camera with video structural description function.
9. hard disc video recording method that utilizes the described equipment of claim 1 to realize having video structural description function is characterized in that described method may further comprise the steps:
(1) described image acquisition units is from the corresponding monitor video image information of described image unit collection;
(2) the graphical analysis discrimination module carries out feature extraction and discriminant classification processing to the monitor video image information of real-time collection.
10. realization according to claim 9 has the hard disc video recording method of video structural description function, it is characterized in that, described graphical analysis discrimination module comprises image segmentation unit, feature extraction unit, discriminant classification unit, described monitor video image information to real-time collection carries out feature extraction and discriminant classification is handled, and may further comprise the steps:
(11) described image segmentation unit is divided into the plurality of sub image to this monitor video image information according to the edge of things in the described monitor video image information;
(12) described feature extraction unit is carried out feature extraction to described subimage, obtains the feature of this subimage;
(13) described discriminant classification unit mates according to the feature of this subimage and the feature in the feature knowledge storehouse, to the attribute of this subimage with content is judged and reasoning.
11. have the hard disc video recording method of video structural description function according to claim 9 or 10 described realizations, it is characterized in that also comprise description unit in the described hard disc recording equipment, described method is further comprising the steps of:
(3) described description unit is described characteristic information and the discriminant classification result who is extracted, and produces the data of description information about image attributes and content.
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