CN103310401A - Image coarsening circuit and method for coarsening image - Google Patents
Image coarsening circuit and method for coarsening image Download PDFInfo
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- CN103310401A CN103310401A CN 201210067629 CN201210067629A CN103310401A CN 103310401 A CN103310401 A CN 103310401A CN 201210067629 CN201210067629 CN 201210067629 CN 201210067629 A CN201210067629 A CN 201210067629A CN 103310401 A CN103310401 A CN 103310401A
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Abstract
The invention discloses an image coarsening circuit and a method for coarsening an image. The image coarsening circuit consists of five parts, such as a read-only memory, a read-write memory, a power supply circuit, an image processing circuit and a communication control circuit, wherein the image processing circuit is respectively connected with the read-only memory, the read-write memory, the communication control circuit and a video input port; a static picture grabbed from a video stream or any picture input by a USB (Universal Serial Bus) port can be realized to be divided into X<2> sub-blocks in an X*X way through the circuit; then the pixel average values of the sub-blocks can be obtained by totaling and summing the pixel values of the sub-blocks; finally the coarsened image of an original image is rearranged by those obtained pixel average values according to the arrangement sequence of the original image, so that the problem that hardware configuration requirements are higher in the existing image coarsening technology can be solved.
Description
Technical field:
The present invention relates to the electronic image process field, relate in particular to the method for a kind of image alligatoring circuit and roughening picture picture thereof.
Background technology:
Image alligatoring circuit is a kind of for electronic image is simplified processing, its pixel value is lowered, the electronic equipment that only keeps original image shape facility and basic color, in actual life, the occasion that need to carry out the electronic image roughening treatment relates to various fields, for example: car plate identification, fingerprint recognition etc.
Image processing circuit in the conventional art is to adopt different feature extraction algorithms according to concrete application requirements basically, in order to extract reliably, exactly Characteristic of Image, for follow-up various occasions provide good sample; But, because its image feature extraction algorithm is according to different application cases and specific, use is single, versatility is poor so exist, be difficult to adapt to the deficiency that the image under the different occasions is processed, moreover, because the algorithm complex of image processing circuit of the prior art is higher, thus during operation except usually taking the very high resource of computer, also the arithmetic speed of CPU in the computer also had high requirement.
Summary of the invention:
For prior art have that versatility is poor, when operation resource occupation large, the demanding deficiency of arithmetic speed, a kind of new image alligatoring circuit and the method for roughening picture picture thereof of providing is provided, compared with prior art, described circuit is made of read-only memory, read-write reservoir, power circuit, image processing circuit and communication control circuit five parts, have and to realize the static images that will from video flowing, intercept or from any image of USB interface input, with the form of X * X image segmentation is become X
2Individual sub-block by drawing the pixel average of each sub-block after the pixel value totalling summation to each sub-block, rearranges out the alligatoring Characteristic of Image of original image more at last according to putting in order of original image with these pixel average that draw.
Its technical scheme is as follows:
A kind of image alligatoring circuit, be made of read-only memory, read-write reservoir, power circuit, image processing circuit and communication control circuit five parts, described image processing circuit is connected with read-only memory, read-write reservoir, communication control circuit and video input port respectively; Described communication control circuit also is connected with USB interface and read-only memory in addition; Described power circuit provides direct-current working volts for other four part in consisting of.
Described read-only memory, read-write reservoir, image processing circuit adopt three kinds of integrated chips to serve as.
Described power circuit is connected into by a kind of integrated chip and two electric capacity of four resistance, and this power circuit provides rated operational voltage for described image processing circuit, read-only memory, read-write reservoir, communication control circuit.
A kind of integrated chip of described communication control circuit and a crystal oscillator pipe connect into.
Above-mentioned integrated chip be used to serving as image processing circuit is connected with the integrated chip of serving as read-only memory, read-write reservoir, communication control circuit, and image processing circuit independently separates at reading system clock on the communication control circuit and the transmission path that reads the data institute warp except system clock.
The corresponding connection of pin Writing/Reading on Writing/Reading pin on the above-mentioned integrated chip be used to serving as communication control circuit and other one integrated chip of serving as read-only memory.
The USB interface that is connected with on the above-mentioned integrated chip be used to serving as communication control circuit connects, and this USB interface is used for being connected with computer; So that by computer and corresponding application software, the actual needs during depending on use is revised the numerical value of described X.
The method of foregoing circuit roughening picture picture is: under the effect of system software, the static images that will intercept from video flowing in the described image processing circuit or from any image of USB interface input becomes X with the form of X * X with image segmentation
2Individual sub-block by drawing the pixel average of each sub-block after the pixel value totalling summation to each sub-block, rearranges out the roughening picture picture of original image more at last according to putting in order of original image with these pixel average that draw; Described variable X is greater than 8 less than 26 natural number, and concrete numerical value can be revised according to actual requirement by system software.
The invention has the beneficial effects as follows: the technical program is owing to having adopted asking gray average to substitute the algorithm of original image behind the image segmentation, so it is fast to possess the algorithm travelling speed, PC is low in resources consumption, the advantage that alligatoring is effective has solved the problem of in the conventional images coarsening technique hardware configuration being had relatively high expectations.
Description of drawings:
1, Fig. 1 is the circuit block diagram of image alligatoring circuit of the present invention;
2, Fig. 2 is the circuit structure diagram of image alligatoring circuit of the present invention;
Embodiment:
Be further elaborated below with reference to the method for accompanying drawing to image alligatoring circuit of the present invention and roughening picture picture thereof.
With reference to figure 1, as shown in FIG., described image alligatoring circuit, be made of read-only memory, read-write reservoir, power circuit, image processing circuit and communication control circuit five parts, described image processing circuit is connected with read-only memory, read-write reservoir, communication control circuit and video input port respectively; Described communication control circuit also is connected with USB interface and read-only memory in addition; Described power circuit provides direct-current working volts for other four part in consisting of.
With reference to figure 2, as shown in FIG., described read-only memory, read-write reservoir, image processing circuit, communication control circuit adopt integrated chip MT48LC, SDRAM, A3P1000, CY48014 to serve as successively.
Described power circuit is connected into by integrated chip LT8023 and two electric capacity of four resistance, and wherein the pin AUX of LT8023 chip is connected with BIAS, pin RT contact resistance R
2Rear and pin ADJ contact resistance R
1Rear and pin SYNC, GND common ground; Be divided into two-way after pin VIN, the RUN/SS parallel connection, the one tunnel through capacitor C
2Rear ground connection, the one tunnel through resistance R
3After be divided into again two-way, wherein one the tunnel connects the power input mouth, another road is through capacitor C
1Rear ground connection; Pin VOUT one tunnel output+5 voltages are given described image processing circuit, and another road is through dropping resistor R
4Rear output+3.3v voltage provides rated operational voltage to read-only memory, read-write reservoir, power circuit.
The above-mentioned integrated chip A3P1000 that serves as image processing circuit, its pin CD connects video interface, pin RA respectively with described integrated chip MT48LC, pin A on the SDRAM connects, pin RD respectively with described integrated chip MT48LC, pin D on the SDRAM connects, pin TL and UD are connected with pin PB on the integrated chip CY48014 that serves as communication control circuit, pin SLRD is connected with pin IFCLK on the integrated chip CY48014, its effect is to allow image processing circuit reading system clock on communication control circuit, pin SLWR is connected with pin CLKOUT on the integrated chip CY48014, and its effect is to allow image processing circuit read data except system clock at communication control circuit.
Pin VCC on described integrated chip MT48LC, the SDRAM connects rated operational voltage, pin GND ground connection.
Serve as the corresponding connection of pin D, A on pin SLRD, SLWR and the other one integrated chip MT48LC that serves as read-only memory on the integrated chip CY48014 of communication control circuit.
The pin SDL, the SDA that serve as on the integrated chip CY48014 of communication control circuit are connected with USB interface, and this USB interface is used for being connected with computer; Pin XTIN and XTOUT ask and be connected with the crystal oscillator pipe, and pin VCC, VACC connect rated operational voltage, pin GND, AGND ground connection.
Its function operation principle is as follows:
After image enters circuit, at first be cut into 256 * 256 sub-blocks, then the gray-scale value of each sub-block is averaged, and replace original sub-block with required gray-scale value, this 256 * 256 sub-blocks that are replaced are stitched together have again in order just formed a secondary new image, the original pixel of this image ratio is low, but kept the mass efficient information of original picture, this normalized image can be widely applied to every field, identify such as the car plate in the intelligent transportation system, the processing that needs picture is carried out early stage in the car plate identification, but the general image of coming in that gathers has all comprised information a large amount of and that identification is irrelevant, but process and to damage certain image information again, so farthest reduce irrelevant pixel, farthest keep again simultaneously the original important information of image, that this circuit is wished the purpose that reaches, on the reservation contradiction point that irrelevant information is rejected and key message keeps, see the disposal route that has adopted gentle compromise in my door, substitute original picture with gray average, on the other hand, the divided sub-block number of image is to change by programming, and makes circuit carry out different cutting apart according to concrete application case.
Claims (8)
1. image alligatoring circuit, it is characterized in that: be made of read-only memory, read-write reservoir, power circuit, image processing circuit and communication control circuit five parts, described image processing circuit is connected with read-only memory, read-write reservoir, communication control circuit and video input port respectively; Described communication control circuit also is connected with USB interface and read-only memory in addition; Described power circuit provides direct-current working volts for other four part in consisting of; Described circuit can be realized the static images that will intercept or from any image of USB interface input from video flowing, with the form of X * X image segmentation is become X
2Individual sub-block by drawing the pixel average of each sub-block after the pixel value totalling summation to each sub-block, rearranges out the roughening picture picture of original image more at last according to putting in order of original image with these pixel average that draw; Described variable X is natural number.
2. a kind of image alligatoring circuit according to claim 1 is characterized in that: described read-only memory, read-write reservoir, image processing circuit adopt an integrated chip to serve as separately.
3. a kind of image alligatoring circuit according to claim 1, it is characterized in that: described power circuit is by integrated chip (LT8023) and four resistance (R
1, R
2, R
3, R
4) two electric capacity (C
1, C
2) connect into, this power circuit provides rated operational voltage for described image processing circuit, read-only memory, read-write reservoir, communication control circuit.
4. a kind of image alligatoring circuit according to claim 1, it is characterized in that: described communication control circuit integrated chip (CY48014) and a crystal oscillator pipe connect into.
5. a kind of image alligatoring circuit according to claim 1 and 2, it is characterized in that: the integrated chip A3P1000 that serves as image processing circuit, its pin CD connects video interface, pin RA respectively with described integrated chip MT48LC, pin A on the SDRAM connects, pin RD respectively with described integrated chip MT48LC, pin D on the SDRAM connects, pin TL and UD are connected with pin PB on the integrated chip CY48014 that serves as communication control circuit, pin SLRD is connected with pin IFCLK on the integrated chip CY48014, its effect is to allow image processing circuit reading system clock on communication control circuit, pin SLWR is connected with pin CLKOUT on the integrated chip CY48014, and its effect is to allow image processing circuit read data except system clock at communication control circuit.
6. it is characterized in that according to claim 1 or 4 described a kind of image alligatoring circuit: serve as the corresponding connection of pin D, A on pin SLRD, SLWR and the other one integrated chip MT48LC that serves as read-only memory on the integrated chip CY48014 of communication control circuit.
7. according to claim 1 or 4 described a kind of image alligatoring circuit, it is characterized in that: the pin SDL, the SDA that serve as on the integrated chip CY48014 of communication control circuit are connected with USB interface, and this USB interface is used for being connected with computer; Be connected with the crystal oscillator pipe between pin XTIN and XTOUT, pin VCC, VACC connect rated operational voltage, pin GND, AGND ground connection.
8. the method for an image alligatoring is, it is characterized in that: under the effect of system software and the described circuit of claim 1, the static images that will intercept from video flowing in the described image processing circuit or from any image of USB interface input becomes X with the form of X * X with image segmentation
2Individual sub-block by drawing the pixel average of each sub-block after the pixel value totalling summation to each sub-block, rearranges out the roughening picture picture of original image more at last according to putting in order of original image with these pixel average that draw; Described variable X is greater than 8 less than 26 natural number, and concrete numerical value can be revised according to actual requirement by system software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210067629 CN103310401A (en) | 2012-03-15 | 2012-03-15 | Image coarsening circuit and method for coarsening image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210067629 CN103310401A (en) | 2012-03-15 | 2012-03-15 | Image coarsening circuit and method for coarsening image |
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|---|---|
| CN103310401A true CN103310401A (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210067629 Pending CN103310401A (en) | 2012-03-15 | 2012-03-15 | Image coarsening circuit and method for coarsening image |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106056090A (en) * | 2016-06-07 | 2016-10-26 | 广东欧珀移动通信有限公司 | Fingerprint image processing method and device |
| CN111386532A (en) * | 2018-09-12 | 2020-07-07 | 指纹卡有限公司 | Reconstruction of sub-images of fingerprints |
| US10949957B2 (en) | 2018-01-04 | 2021-03-16 | Gingy Technology Inc. | Biometric image processing method and electronic device thereof |
-
2012
- 2012-03-15 CN CN 201210067629 patent/CN103310401A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106056090A (en) * | 2016-06-07 | 2016-10-26 | 广东欧珀移动通信有限公司 | Fingerprint image processing method and device |
| US10949957B2 (en) | 2018-01-04 | 2021-03-16 | Gingy Technology Inc. | Biometric image processing method and electronic device thereof |
| CN111386532A (en) * | 2018-09-12 | 2020-07-07 | 指纹卡有限公司 | Reconstruction of sub-images of fingerprints |
| CN111386532B (en) * | 2018-09-12 | 2023-09-08 | 指纹卡安娜卡敦知识产权有限公司 | Reconstruction of fingerprint sub-images |
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Application publication date: 20130918 |