CN1330178C - Method and equipment for recording digital image processing - Google Patents

Abstract

The present invention discloses a digital image processing and recording method and a device, which aims to overcome the defect existing in the prior art that all the images can only be compressed and stored by a fixed compression mode (method) according to presetting. The method is realized in the way that the original image is input into an image collecting and compression processing unit; more than two modes (methods) are used for compression; and compressed data (stream) is input into a main processor unit to be processed and respectively recorded in a storage unit. The digital image processing and recording device comprises the image collecting and compression processing unit, the main processor unit and the storage unit, wherein more than two compression processing units are arranged in the collecting and compression processing unit. The method and the device are applied to large-capacity digital hard disk video recorders for the storage of digital images, digital magnetic tape video recorders, optical disk video recorders, etc.

Description

Digital image processing and recording method and device

technical field

The invention relates to an image processing and recording method and device, in particular to a method and device for digitally encoding, compressing and recording video signals.

Background technique

In the prior art, Japan's SONY HSR-IP digital surveillance video recorder is equipped with a hard disk and a digital tape recording dual storage device, and is connected as the front and rear stages. After storing full image data on the hard disk, the image data is transferred from the hard disk to the data tape in the digital tape recorder of the subsequent stage, and then new image data is stored on the hard disk. Due to the replaceable data tape, the storage capacity of the system can be expanded infinitely, which meets the requirements of large-capacity digital image recording to a certain extent. In addition, the existing method and device thereof can also record at a rate of 25 frames/second (PAL system) or less than 25 frames/second (PAL system) according to different image recording requirements; time span. At the same time, the existing device can adjust and set indicators such as compressed data streams to adapt to different applications. However, during image processing and recording, all images can only be compressed with a fixed compression method (method) according to preset settings. It is difficult to take into account the different aspects of the image through the image data (stream) that is compressed and saved in this way. key requirements. Wherein, manner (method) is an abbreviation of manner or method, the same below; data (flow) is an abbreviation of data or data flow, the same below.

Contents of the invention

The object of the present invention is to provide a method and device for digital image processing and recording in order to overcome the deficiency that the prior art cannot simultaneously take into account the different emphases of recording images.

The above-mentioned purpose of the present invention is realized by following technical scheme: the original image input image acquisition compression processing unit uses more than two modes (methods) to carry out compression processing, and the compressed data (stream) is input to the main processor unit for processing and then recorded respectively in the storage unit. The main processor unit can be programmed to run automatically or semi-automatically according to preset conditions. During semi-automatic operation, the operation of the main processor unit is controlled by auxiliary control signals or instructions input from the outside. . The image acquisition and compression processing unit can simultaneously acquire one or more original images. The collected original image can be compressed using more than two different compression methods (methods), and more than two different compression methods (methods) can adopt different compression standards, and can also adopt different image resolutions. Use different data streams or image frame rates.

The above object of the present invention can also be achieved through the following technical solutions: a digital image processing and recording device, including an image acquisition and compression processing unit for compressing the original image after acquisition; The compressed data (stream) is stored or transmitted; the storage unit is used to store the compressed image data, and there are more than two compression processing units in the acquisition compression processing unit. The digital image processing and recording device may also include an auxiliary control unit to control the digital image processing and recording method. The storage unit in the digital image processing and recording device can be transferred to an external recording device through the data interface. The storage unit in the digital image processing and recording device is a hard disk, magnetic tape, optical disk or flash memory.

Compared with the prior art, the present invention has the following beneficial effects: it can use two or more different kinds of compressed image data to reflect the different emphases of the original image information, thus satisfying the different purposes of users, and avoiding the loss of resources. waste.

Description of drawings

Fig. 1 is a schematic diagram of a digital image processing and recording method and device of the present invention;

Fig. 2 is a schematic diagram of Embodiment 1 of a digital image processing and recording method and device of the present invention;

Fig. 3 is a principle diagram of Embodiment 2 of a digital image processing and recording method and device of the present invention.

in:

100 is an image acquisition compression processing unit; 101 is an image acquisition processing unit; 102, 103 are image compression processing units; 105 is a data bus;

200 is a main processing unit; 201 is a data bus; 202 is a processor unit; 203 is a data interface unit;

300 is a storage unit;

400 is an auxiliary control unit; 401 is an auxiliary signal unit; 402 is an auxiliary information instruction unit;

500 is an image display output unit.

best practice

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Referring to Fig. 1 and Fig. 2, this embodiment includes five units: an image acquisition and compression processing unit, a main processing unit, a storage unit, an auxiliary control unit, and a display output unit. The image acquisition and compression unit of the present invention carries out digital coding (for example: adopting CCIR601, CCIR656 standard) to input n (n is a natural number) original image video signal of this unit, and to the n original image coding data (streaming) after digital encoding ) to carry out image compression processing (for example: according to the image compression standards such as the MPEG series of ISO/IEC and the H.263 of ITU-T, etc., WAVELET or other effective encoding and compression techniques can also be used), and at the same time select m (m≤n) The original image encoding data (stream) is compressed using two or more different image compression processing methods (methods), for example: different image compression standards (JEPG and MEPG), or different image resolution rate (720×576 and 352×288), or different compressed data streams (4 Mbps and 1.15 Mbps), or different digital frame rates (25 frames per second and 6 frames per second).

The main processing unit performs storage processing (for example: classifying, adding labels, etc.) to various compressed image data (streams) after compression processing, and selects a storage method and a storage device for storage.

Various image compression data (streams) are recorded on the record carrier of one or more devices of the same type or different types of storage units (such devices as: hard disks, data tape drives, CD recorders, flash memory devices, etc.); in addition It is also possible to record one kind of image compression data (stream) in the above-mentioned storage unit of the device, and another kind of image compression data (stream) to be transmitted to the outside through the data interface (for example: IDE, SCSI, IEEE1394, USB, SerialATA, LAN, etc.) Storage device, or stored in other systems.

The auxiliary control unit can provide the received signals, instructions, and data to the main processing unit to assist it in system control and data processing when necessary.

The display output unit reproduces and outputs the image signal decompressed by the main processing unit, or directly reproduces and outputs the original image signal after being properly processed.

Embodiment 1 of the digital image processing and recording method of the present invention adopts two different compression methods (methods) to compress an original image and store or transmit it respectively, and the operation control is automatically or semi-automatically controlled by a program. The image acquisition and compression processing unit 100 can simultaneously receive n (n is a natural number) real-time original image video signals, and perform double compression processing on any m (m≤n) original image video signals.

For example, the original image 1 is sent to two image compression processing units 102 and 103 after analog-to-digital conversion and digital encoding by the image acquisition processing unit 101 . Process according to different compression processing methods (methods) (for example: unit 102 adopts MPEG-1, and unit 103 adopts JPEG compression standard, or unit 102 uses 352*288, and unit 103 uses 720*576 image resolution, or unit 102 uses 25 frames/second, and unit 103 uses a compressed frame rate of 6 frames/second... etc.), after processing by image compression processing units 102 and 103, the same original image information forms two different compressed data (streams) , and then sent to the main processing unit through the data bus 105 for storage processing.

During the above-mentioned double compression processing, the acquisition processing unit example 101 can be digitally encoded through an analog-to-digital conversion and digital encoding circuit, and then divided into two identical data (streams) and sent to the image compression processing unit 102 respectively. and 103; can also receive the original image video signal 1 at the same time with two identical analog-to-digital conversion and digital coding circuits, and carry out digital coding respectively, and then send it to the corresponding image compression processing unit 102,103.

The rest of the original image is processed according to the above method and so on.

The main processing unit 200 of this embodiment performs classified management and processing on each image compression data (stream) of the data bus 105, and sends this type of data (stream) to the storage unit for recording and storage through the data bus 201, or transfers the data (stream) through the data bus 201 One of the two kinds of image compression data (streams) processed by different compression methods (methods) or part of the image compression data (streams) are transmitted to the Record storage in external storage device or other system.

The storage unit 300 of the present embodiment is made up of one or more storage devices of the same type or different types (for example: hard disk, data tape drive, CD recorder, flash memory device, etc.), and the storage unit 300 will be processed according to the main processing unit. It is required to record and store or read image compressed data (stream) respectively.

The auxiliary control unit 400 of this embodiment is composed of an auxiliary signal unit 401 and an auxiliary information instruction unit 402 . Auxiliary signal unit 401 can process external signals (for example: switch signal) and send them to the main processing unit; auxiliary information and instruction unit can receive externally input information (data) and instructions, and send them after processing For the main processing unit, to assist the main processing unit in system control and data processing (for example: selection and control of compression mode or auxiliary information insertion processing in compressed data (stream), etc.).

The display output unit 500 of this embodiment reproduces and outputs the decompressed image data (stream) or the properly processed original image (for example: in the form of AV or VGA).

Shown with reference to accompanying drawing 3, Fig. 3 is an embodiment with computer hardware structure or similar structure. In the figure, the image acquisition and compression processing unit 100, the main processing unit 200, the storage unit 300, the auxiliary control unit 400, and the image reproduction unit 500 have functions similar to those of the foregoing embodiments.

The image acquisition compression processing unit 100 of the previous embodiment is composed of an image processing compression card in the form of a computer bus (such as PCI bus) in this embodiment.

The main processing unit 200 of the previous embodiment is composed of a computer main body in this implementation, including a mainboard, CPU, internal memory, IDE interface, PCI bus, etc. In this embodiment, the decompression of image compression data (stream) can be performed by the CPU The unit 202 is completed and processed by software, and output through the display card unit 500 .

In this embodiment, the storage unit 300 may be a hard disk, an optical disc recorder, a flash memory device, a magnetic tape drive, and the like.

The auxiliary information control interface unit 400 in this embodiment is the same as the previous embodiment and will not be described again.

Industrial Applicability

The present invention can use two or more different kinds of compressed image data to embody different emphatic contents of the original image information, thereby satisfying different uses of users, and avoiding one thing at the expense of another or waste of resources.

Claims (17)

1, a kind of Digital Image Processing recording method is gathered the same original image of compression processing unit to input picture, uses two or more modes or method to compress processing simultaneously, and is recorded in memory cell respectively after the processing of input main processor unit.

2,, it is characterized in that main processor unit moved by program control automatically by prerequisite according to the described method of claim 1.

3, according to the described method of claim 1, it is characterized in that main processor unit by prerequisite by the semi-automatic operation of program control.

4,, it is characterized in that described semi-automatic operation is that the main processor unit operation is controlled by auxiliary control signal or the instruction by the outside input according to the described method of claim 3.

5,, it is characterized in that described IMAQ compression processing unit gathers simultaneously to one and above original image according to the described method of claim 1.

6,, it is characterized in that adopted more than two kinds different compress mode or methods to compress processing by the original image gathered according to the described method of claim 1.

7,, it is characterized in that described compress mode different more than two kinds or method adopt different compression standards according to the described method of claim 1.

8,, it is characterized in that described compress mode different more than two kinds or method adopt different image resolution ratios according to the described method of claim 1.

9,, it is characterized in that described compress mode different more than two kinds or method adopt different data code flows according to the described method of claim 1.

10,, it is characterized in that described compress mode different more than two kinds or method adopt different image frame per second according to the described method of claim 1.

11, a kind of Digital Image Processing tape deck comprises the IMAQ compression processing unit; Be used for compressing processing after the original image collection simultaneously; Main Processor Unit is used for processing is stored or transmitted to compressed data or data flow; Memory cell is used for image compression data is stored, and is characterised in that the compression processing unit that has in the described collection compression processing unit more than two.

12,, it is characterized in that device also comprises Auxiliary Control Element, controls the Digital Image Processing recording method according to the described device of claim 11.

13,, it is characterized in that described memory cell is to be sent to external record equipment by data-interface according to the described device of claim 11.

14,, it is characterized in that described memory cell is a hard disk according to the described device of claim 11.

15,, it is characterized in that described memory cell is a tape according to the described device of claim 11.

16,, it is characterized in that described memory cell is a CD according to the described device of claim 11.

17,, it is characterized in that described memory cell is a flash memory according to the described device of claim 11.