JPH05274440A - Deciding method by area and shape comparison of fingerprint recognizing and deciding device - Google Patents

Abstract

PURPOSE:To enable high-speed processing by roughly checking whether or not an image of one body is the same as a previously registered image by comparing its area or shape in image processing and checking it in detail only when it is decided that the image is the same. CONSTITUTION:The image pickup video signal of a CCD camera 1 is converted by an A/D converter 12, into a digital signal, which is stored in a video RAM 3. After the signal is stored by one screen, a microprocessor reads video data out of a ROM or RAM 5 previously stored with many video data in order and compares the area or shape fast by a comparing circuit 4. The data when identical are further compared so as to check whether the data are the same in detail or not. Thus, the image of the body is processed fast to shorten the processing time.

Description

Detailed Description of the Invention

[0001]

[Industrial application] This is effective for high-speed processing of whether or not an object is the same.

[0002]

2. Description of the Related Art When checking whether an object is the same,
It took a lot of time because I had been examining it in detail from the beginning.

[0003]

SUMMARY OF THE INVENTION It is possible to compare a video of a certain object with a pre-registered video of many objects, and perform high-speed processing to determine whether they are the same.

[0004]

A video signal from a CCD camera is converted into a digital signal by A / D and stored in a memory section. This is compared with a large number of prestored image data in terms of area or shape, a match is searched for, and the match is compared in detail there.

[0005]

[Example] Imaging diagram A video signal captured by a CCD camera is converted into a digital signal by an A / D converter and stored in a video RAM.

When one screen is stored and the processing is completed, the microprocessor compares the areas or shapes at a high speed sequentially from a large number of pre-registered ROMs or RAMs by a comparison circuit, and determines whether or not they match in detail. Compare.

[0007]

As described above, according to the determination method for comparing the area and shape of the fingerprint recognition / discrimination apparatus of the present invention, the time of a certain object is processed at a high speed, and a great reduction in time can be obtained.

[Brief description of drawings]

FIG. 1 is a video circuit diagram.

[Explanation of symbols]

 1. CCD camera 2. A / D converter 3. Video RAM 4. 4. Comparison circuit or microprocessor Many pre-registered ROMs or RAMs

Claims (1)

[Claims] 1. In the image processing, when the image of a certain object is the same as the one registered in advance, the area or the shape is compared, it is checked whether they are roughly the same, and it is determined that they are the same. Only proceed to the detailed investigation process.