KR20060088588A - Partial image saving system and method - Google Patents

Abstract

The present invention relates to a system and method for partial image storage. The system comprises at least one image-acquisition device and at least one digital data storage and processing device connected to the image-acquisition device and receiving and processing the largest image data. The digital data storage and processing device comprises at least one data storage device and at least one temporary data processing device. The data storage device includes at least one temporary data file and at least one long time data file. First, the largest complete image acquired by the image-acquisition device is stored in a temporary data file. The image data processing device then identifies the target target in the complete image area based on the user defined criteria. The image around the target target is finally stored in the data file for a long time. The temporary data file is then empty to prepare the next image data. In this way, the repeated and non-essential background image is removed and only the image data of the area surrounding the target target is stored and / or transmitted. The burden of storing and transmitting image data can be significantly reduced. Therefore, the monitoring objective of covering a large area while keeping only the image data of the target target can be satisfied.

Description

Partial Image Saving System And Method

 1 is a block diagram showing a partial image storage system of the present invention;

2 is a flow chart showing the processing steps of the present invention;

3 is a schematic showing a complete image stored in a temporary data file;

4 is a schematic showing a screening process based on user definition (in this case motion detection was used);

5 is a schematic diagram showing that only image data of a selected target is stored in a data file for a long time.

The present invention relates to a partial image storage system and method thereof, and more particularly, to eliminate the recurring background while preserving the image of a specific target in order to improve storage efficiency and reduce the data transfer burden, It relates to achieving the purpose of covering a large surveillance area but only retaining image data of the target target.

Surveillance systems equipped with video cameras are commonly installed in building entrances, parking areas, convenience stores, banks or shared residences. Video cameras equipped with wide-angle lenses monitor and record people and vehicles passing through the intended surveillance area, enabling playback of video tapes (or digital recording media) that record incidents, crimes, or the occurrence of specific situations. To be able to follow.

In conventional surveillance systems, hard disk drives (HDDs) of videotape or digital data storage and processing devices are commonly used as means for storing image data. In the past, the resolution of conventional video cameras (with a CCD sensor of about 300,000 pixels) was usually low. The use of recently developed high resolution color video cameras (with tens of millions of CCD sensors) can result in vast image data, inefficient storage capacity, and reduced storage time, so most surveillance systems are still imaged. A low resolution camera is adopted as a means of acquiring. However, in conventional surveillance systems, since the camera employs a wide-angle lens as a means for recording a wide-angle image within the desired surveillance area, when the police wants to identify a specific dynamic target within the picture frame, the image is Because of the small number of pixels, it is usually impossible to see clearly. In particular, when the target of interest is far from the camera, it is very difficult to recognize the detailed features, and thus the purpose of recording past events for surveillance purposes has not been achieved.

Conventional video surveillance systems require mechanically driven rotating lenses, such as the use of a Pan Tilt Zoom (PTZ) camera for a target in a particular area, if the intention is to capture detailed information and simultaneously monitor a large area. However, since the life expectancy is limited by the mechanical life of the drive mechanism, the durability of such a camera is a problem. Moreover, the lens requires zoom in, zoom out, and re-focusing after each operation, thereby increasing the response time in the process of acquiring an image. In addition, manual operation is required to enlarge a particular target.

Although image processing software currently used may enhance image data, image enhancement techniques do not solve all problems; Only limited improvement can be achieved. In addition, due to the low resolution cameras employed by conventional surveillance systems, the image to the target target is blurry and difficult to recognize even after magnification.

Therefore, there is a need to develop a surveillance system capable of acquiring and storing a clear image of a target without increasing the burden on storage loads or data transfer.

In this respect, the present invention discloses a partial image storage system and method thereof, specifically, by deleting a repeating background while preserving image data of a specific target to improve storage efficiency and reduce the burden on data transfer. A partial image storage system and method thereof are disclosed that cover a wide surveillance area, but achieve the purpose of maintaining only image data of a target target.

To achieve the above object, the present invention provides an image-taking device for continuously acquiring image data in an intended surveillance region; And a digital data storage and processing device coupled to the image-acquisition device and receiving the largest image data, the digital data storage and processing device having a plurality of temporary and long-term data files. A partial image storage system, and method thereof, comprising at least one image storage device and at least one image data processing device. First, complete image data obtained by the image-acquisition device is stored in a temporary data file. The image data processing device then identifies the target target in the complete image data based on user-defined criteria and stores the data image near the target target in the data file for a long time. The original image data of the temporary file is then empty after the screening process. As a result, it is possible to delete repetitive background image data while preserving only image data of a specific target, thereby improving storage efficiency and reducing the burden on data transmission, thus achieving the purpose of covering a large surveillance area, but the target target. Can maintain image data.

The features and advantages of the present invention will become more apparent from the following description and drawings of preferred embodiments of the present invention.

1 is a block diagram illustrating a partial image storage system of the present invention. As shown in the figure, a partial image storage system for capturing image data of a specific target is:

An image-acquisition device 1 which is a high resolution digital video camera for continuously obtaining image data in the intended surveillance region; And

A digital data storage and processing device connected to the image-acquisition device 1 and receiving the largest image data and consisting of at least one data storage device 21 and at least one image data processing device 22. (2); consisting of,

The data storage device 21, which is a large capacity HDD (hard disk drive) or any digital memory device, contains a large number of temporary and long time data files,

The image data obtained by the image-acquisition device 1 is temporarily stored in a temporary data file of the data storage device 21. The image data processing device 22 then utilizes a variety of image-processing techniques to identify the target target and transmits image data near the target target to the data file for a long time. Then, the complete image data on the temporary data file after processing is deleted to provide storage space for the next complete image data.

2 is a flowchart illustrating a method of storing a partial image of the present invention. As shown in the figure, such a method is:

(1) acquiring an image within the surveillance area intended by the means of the image-acquisition device;

(2) storing complete image data as obtained in a temporary data file; And

(3) Use various image-processing techniques to identify the target target in a perfect picture, store image data near the selected target in a data file for a long time, and delete temporary data files to create storage space for the next perfect image data. It comprises a; providing.

In accordance with the systems and methods of the present invention, the manner in which the target is selected may be determined by user defined criteria and / or installation location. 3, 4 and 5 are reference views showing a preferred image data processing process according to the present invention.

As shown in Figure 3, a high resolution camera is used to obtain a complete image of a particular surveillance area. As shown in FIG. 4, after individually confirming the passing person and the vehicle as the target target, the image data processing device individually omits the selected place near the person and the vehicle into the data file for a long time while omitting the image data for the repetitive background. Save it. Then, the processed temporary data file is deleted to recover a large amount of storage space. The target target set to be captured can be determined by the following techniques, although not limited to the following: depending on the actual installation location, movement, outline shape, color, size, temperature detected by infrared rays, and speed Etc.

In addition, since the image data of the person and the vehicle captured and individually stored in the data file for a long time is a high resolution image composed of fine pixels, the picture will not be blurred even after magnification (as shown in FIG. 5).

Thus, deleting repeated backgrounds while preserving only the data image of a particular target improves storage efficiency and reduces the burden on data transfer, thereby achieving the purpose of maintaining only the image data of the target target while covering a large surveillance area. Can be.

As described above, partial image storage systems and methods provide improvements over the prior art and meet the patentability requirements described in the law. Accordingly, this patent application has been submitted.

The present invention is a novel creation in the art and is making innovative developments. The foregoing descriptions relate to the description of preferred embodiments according to the present invention. Since the present invention is not limited to the specific details described in connection with the preferred embodiments, modifications and implementations to certain features of the preferred embodiments without changing the overall basic function of the invention are claimed in the following claims It can be done within a range.

Claims (6)

An image-taking device for continuously acquiring image data within the intended surveillance area; And At least one image storage device coupled to the image-acquisition device, receiving the largest image data, the plurality of temporary and long-term data files, and at least one image data processing device; The digital data storage and processing device; Consists of including The complete image data obtained by the image-acquisition device is temporarily stored in the temporary data file, and then the image data processing device uses various image processing techniques to identify a target target within the perfect image and Storing only the image data near the selected target in the long time data file, and recovering the storage space to delete the complete image data of the temporary data file after processing to prepare the next perfect image data System and method. The partial image storage system of claim 1, wherein the image-acquiring device is a high resolution video camera. The partial image storage system of claim 1, wherein the digital data storage and processing device is a computer or digital electronic device capable of performing such a task. The partial image storage system of claim 1, wherein the data storage device is a large capacity HDD (hard disk device) or other digital memory device. (1) acquiring an image within the surveillance area intended by the means of the image-acquisition device; (2) storing complete image data as obtained in a temporary data file; And (3) storage space for the next perfect image data by identifying the target target on the temporary data file by the image data processing means, storing the image data near the selected target in the data file for a long time, and deleting the temporary data file Providing a; Capturing partial image data comprising: a. 6. The method of claim 5, wherein the target target captures partial image data selected by one of the following criteria according to actual installation location or user defined requirements: by motion, outline shape, color, size, infrared light. Detected temperature, and speed.

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