CN1026446C - Image processing apparatus and method - Google Patents

Abstract

An image processing apparatus comprises: an input device for supplying color image information; a discrimination unit to discriminate whether the color image information includes a predetermined image or not in accordance with a color distribution of the color image information supplied by the input device; and a processing circuit to process the color image information in accordance with the result of the discrimination of the discriminating means. The color image information is constructed by a plurality of color component signals. The color distribution is a distribution of the color image information in a color space.

Description

Image processing apparatus and method

The present invention relates to a kind of color image processing apparatus, particularly a kind of color image processing apparatus with the specific original paper function of discriminating.

In the last few years, along with the appearance of the very high coloured image copy device of image quality with popularize, people grew with each passing day to the fear of the criminal offence of counterfeit note, stocks and shares and so on.In order to prevent this class criminal offence, at U.S. Patent application the 478th, a kind of method has been proposed in No. 280, promptly from the output of a capable reader that is used for reading original paper, extract the pattern of a given shape, then it and the template data of being scheduled to are compared, and detect the ticket that has or not bank note and so on, detecting under the situation that has bank note and so on ticket, interrupt the duplicating process.

In U.S. Patent application the 351st, 165 and 426, No. 044, proposed to prevent the technology of the behavior of counterfeit note and so on ticket.

Yet in general, position, angle that is placed on the original paper on the copy device original paper substrate or the like is ignorant at all, and this original paper and other original paper are mixed in together, is very difficult so will extract the pattern of desired given shape from these original papers.

Even it is successfully extracted desired pattern, different as the pattern that extracts target also difference because of bank note kind (country of cash face amount, distribution).Consider each possibility, just need carry out the pattern control treatment.So the data volume that will handle is just very big, the time of processing is also just very long.

In addition, along with the increase of extracting pattern numbers, the data volume of carrying out the model of pattern contrast has also increased.Like this, required memory capacity also will be very large.

On the other hand, in such device, the chrominance component with colored original paper converts a predetermined value in general, is a kind of effective means for the tone of differentiating original paper.For example, check, look at whether to include the original paper of particular shade of color in original paper, if any, just stop to duplicate, its circuit structure as shown in figure 24.

Color separation R.G and B signal carry out mould/number conversion through A/D converter 1301, and then (Shading Correction circuit 1302 carries out shading correction through shading correction.The output signal of shading correction circuit 1302 is delivered to logarithm (log) translation circuit 1303 and tracing table (writing LUT later on) 1306 respectively.The output signal of log-transformation circuit 1303 is transmitted downwards by covering circuit and owing color separation circuit (writing the UCR circuit later on) 1305, and they are transformed into Y, M, C and duplicating of K signal and output as a result, form copy image by these signals.

On the other hand, data " 0 " or " 1 " expression R, G and B input signal are corresponding to the LUT1306 that never writes specific original paper color or former.When corresponding to the original paper color, just produce signal " 1 ".Label 1307 is represented counter, and the number of times that signal " 1 " occurs is counted; Label 1308 is represented comparer, is used for count value and predetermined threshold value are compared, and when count value during greater than threshold value, output signal " 1 ".When comparer produced signal " 1 ", selector switch 1309 stopped to produce picture signal and gets back to a fixing value, and for example 255, interrupt copy image thus.

In the foregoing circuit structure, comprise seven if suppose each R, G and B signal, LUT1306 needs the capacity of 2 megabits.But,, so just need tens nanoseconds response time if so jumbo tracing table is applied to the pixel unit of original paper image.Shortcoming is can not satisfy such response time with cheap EPROM or similar assembly.

An object of the present invention is to overcome the shortcoming of above-mentioned conventional art.

Another object of the present invention provides a kind of image processing apparatus, and it can differentiate specific original paper exactly.

For achieving the above object, according to the present invention, image processing apparatus comprises: the input media that is used for input color image information; Be used for differentiating according to the color distribution of the color image information of importing from input media whether color image information comprises the identification device of predetermined image; And the treating apparatus of color image information being handled according to the identification result of identification device.

The invention also discloses a kind of image process method, it may further comprise the steps: input color image information; And differentiate according to the color distribution of input color image information whether color image information comprises predetermined image.

A further object of the invention can be differentiated simultaneously to a plurality of specific original papers exactly.

For achieving the above object, according to the present invention, image processing apparatus comprises: the conversion equipment that is used for according to chromatic information color image information being converted to a plurality of code informations; Be used for collecting code information and forming histogrammic treating apparatus, differentiate according to histogram whether the image by the color image information representative is the identification device of predetermined image a presumptive area; And the control device of the processing procedure of image information being controlled according to the identification result of identification device.

A further object of the invention provides a kind of image processing apparatus, and it can make the capacity of LUT and response time coordinate mutually.

A further object of the invention provides a kind of image processing apparatus, and it can satisfy the needs of high speed processing.

For achieving the above object, according to the present invention, image processing apparatus comprises: the input media that is used to import a plurality of color component signals; The tracing table device, as the address, and output data is to differentiate by the image of a plurality of color component signal representatives and the similarity between the predetermined image with a plurality of color component signals for it; And the control device of the processing procedure of a plurality of color component signals being controlled according to the output of tracing table device.

A further object of the invention is the behavior that prevents counterfeit note and so on ticket effectively.

For achieving the above object, according to the present invention, image processing apparatus comprises: the readout device that is used for the original paper image is scanned and produces view data; First identification device, the view data that it produces according to readout device is differentiated the identical point between original paper image and the predetermined image; And the treating apparatus of image data processing, wherein readout device produces the view data of being differentiated by identification device by scanning for the first time, and produce by scanning the view data of handling by treating apparatus for the second time, this image processing apparatus also comprises second identification device, and it is differentiated the identical point between target that scans for the first time and the target that scans for the second time.

A further object of the invention provides a kind of circuit scale image processing apparatus little, simple in structure.

For achieving the above object, according to the present invention, image processing apparatus comprises: be used to import the input media of a plurality of color component signals, each color component signal has the n position; Convert this color component signal to each and have only the m position (conversion equipment of the color component signal of n＞m); And according to m position color component signal, the identification device that the image and the identical point between the predetermined image of the representative of the color component signal that provided by input media are differentiated.

Image processing apparatus also comprises: the input media of input image data; Make from the view data of input media input and spatially become the sparse desaturation device of row; Produce the table conversion equipment of data, these data are used for according to differentiating by the view data of desaturation device desaturation whether the original paper of input is specific original paper; And according to the output of table conversion equipment control device to controlling from the processing procedure of the view data of input media input.

With reference to accompanying drawing, and, can more clearly understand the present invention above-mentioned purpose and the feature that reach other by reading following detailed and additional claims.

Fig. 1 is the block diagram of an embodiment of circuit structure of the present invention;

Fig. 2 explains the sampling process of object color component;

Fig. 3 represents the example that object color component distributes;

Fig. 4 is the detail drawing that color is differentiated tracing table;

Fig. 5 explains and differentiates the zone;

Fig. 6-1A to 6-1D and Fig. 6-2A to 6-2D represent histogrammic example;

Fig. 7 A and 7B represent the example of result;

Fig. 8 is the block diagram of second embodiment of the invention;

Fig. 9 represents colored another embodiment that differentiates tracing table;

Figure 10 is the block diagram of the 3rd embodiment of copy device, and image reading apparatus wherein is housed according to the present invention;

Figure 11 is a process flow diagram of explaining CPU1021 control duplicating process according to embodiment;

Figure 12 is the block diagram of expression as main the 4th embodiment partly of copy device, and image reading apparatus wherein is housed according to the present invention;

Figure 13 is the inner structure block diagram according to the picture sweep unit of copy device of the present invention;

Figure 14 is the circuit diagram of desaturation circuit 2111 structures of the 6th embodiment of expression;

Figure 15 is the process flow diagram of the CPU working condition among the 6th embodiment of explanation;

Figure 16 A is the block diagram of specific original paper discriminating unit 2112 structures of the 6th embodiment of expression;

Figure 16 B be one of expression " or " block diagram of write circuit 2411 structures;

Figure 16 C is the sequential chart that the timing generator circuit of a generation clock signal is sent.

Figure 17 represents the block diagram of the typical structure of integrator 4011 to 4018;

Figure 18 A and 18B explain the effect of integration;

The original paper that Figure 19 A and 19B explanation are specific and the relation of color space;

Figure 20 illustrates the color space data of specific original paper and differentiates the relation of ROM2401;

Figure 21 represents the position relation between specific original paper and identified region;

Figure 22 is the sectional view of the copy device inner structure of expression the 6th embodiment of the present invention;

Figure 23 is the block diagram of the desaturation circuit structure of the 7th embodiment of expression;

Figure 24 is the block diagram of the picture sweep unit structure of conventional apparatus;

Figure 25 explanation utilizes the color space to differentiate the method for specific original paper.

First embodiment:

According to this embodiment of the present invention, notice the color that constitutes bank note and so on ticket.Extract a color and a COLOR COMPOSITION THROUGH DISTRIBUTION situation that has in the restriction window of original paper, detect the ticket whether bank note and so on is arranged thus and exist.Next step exists if conclude the ticket that bank note and so on is arranged, and the image in the window generates with the form different with normal condition so, thereby has prevented the forgery criminal offence.

Referring now to accompanying drawing, embodiments of the invention are elaborated.

Fig. 1 is the block diagram of first embodiment of the invention structure.The original paper 102 that is placed on the original paper base plate glass 101 is shone by Halogen lamp LED 103.By rod-shaped lens group 104, on a capable reader 105 of CCD, form the image of original paper.R, G and the pointwise of B color separation color filter are sequentially applied on the capable reader 105 of CCD.Reader 105 produces the color separation signal of original paper, and its PEL (picture element) density is approximately 400d.p.i(point/inch).For example, its structure is that the capable reader that three R, G and the capable reader of B are arranged in parallel also can be as row reader 105.Element 103 to 105 is read the original paper image in order line by line according to scanning direction shown in the arrow, produces the original paper image at last.The maintenance that the output signal of sampling and 106 pairs of capable reader 105 each pixels of CCD of holding circuit (S/H circuit) is all taken a sample.A/D converter 107 becomes digital signal with the analog signal conversion of S/H circuit 106 outputs.Shading correction circuit 108 is proofreaied and correct the output pulsation that is caused by the change of sensitivity between the capable reader pixel of CCD.R, the G and the B signal that produce from shading correction circuit 108 convert complementary color signal C(viridescent to by a logarithm (log) change-over circuit 109), the M(magenta) and the Y(Huang).The minimum value K(of C, M and Y is black) extract circuit 110 extractions by a black.Covering circuit 111 and UCR(and owe color separation) circuit 112 is used for finishing the colour correction that people are familiar with and handles.Next, view data is sent to selector switch 118, as the zone sequence signal of C, M, Y and K.

In addition, averaging circuit 113 is averaged according to output signal R, G and the B of N * N pixel (about 8 to 32 pixels of N=) to shading correction circuit 108.The output signal of averaging circuit 113 is through tracing table (LUT) 114 transmission, and tracing table will be illustrated afterwards that the data of the Zone Full of original paper temporarily exist in the frame buffer 115.When averaging, in each space of M pixel (about 8 to 32 pixels of M=) R, G and B output signal are carried out secondary sample, reduce data volume thus.Average and the process of secondary sample is finished under main scanning direction and time wherein at least a direction in direction of scanning.The data that temporarily are stored in the frame buffer 115 are handled by CPU116, and this is illustrated afterwards, differentiates the ticket that whether has bank note and so on thus.This discriminating is finished at a plurality of zones in the original paper.If determine to exist the ticket of bank note and so on, CPU116 sends an image address corresponding to domain of dependence to gate signal generation circuit 117 so.Circuit 117 takes place send a gate signal to selector switch 118.For the zone that does not have bank note and so on ticket, selector switch 118 provides picture signal C, M, Y and the K that obtains from UCR circuit 112; For the zone of depositing bank note and so on ticket in the bank, selector switch 118 provides a spacing wave (fixed value signal).For example, O or FF can be used as spacing wave.The output signal of selector switch 118 converts simulating signal to again by D/A 119.This simulating signal by comparer 121 with and the output signal of the synchronous triangle wave generating circuit 120 of image clock compare.The output signal of comparer 121 transmits through laser driver 122, width modulation semiconductor laser 123, the output of semiconductor laser is aimed at by a suitable optical system, and scans on photosensitive drum 125 by the polygon prism 124 of a high speed rotating, thereby writes sub-image.The sub-image that forms on the drum 125 is through developing process, duplicating transfer process and fixing (not shown), so form visual picture by zone sequence according to the order of C, M, Y and K on paper, the duplicating process has just been finished.

In the above course of work, when the process of the process of frame buffer storage data and discriminating can be at prescan, finish, also can produce when the main sweep as the gate signal of identification result.On the other hand, it also is possible doing like this, promptly take out data Y, M, C and K being carried out zone sequence first time when scanning (to Y scanning), second and when scanning for the third time (to M and C scanning) finish discrimination process, and only to final zone (the 4th time time) (to K scanning) generator gate signal.

The discrimination process that explanation is now finished by LOT114 and CPU116.Consideration by three kinds of bank note A, B and C as the situation of differentiating target.At first, according to bank note A, B and the sampling of C preparation standard, as shown in Figure 2, take a sample, thereby obtain R, G and B value at corresponding every at 32 some places.The value of the sampling spot of corresponding bank note A is R _A1To R _A32, G _A1To G _A32, and B _A1To B _A32The value of the sampling spot of corresponding bank note B is R _B1To R _B32, G _B1To G _B32, and B _B1To B _B32The value of the sampling spot of corresponding bank note C is R _C1To R _B32, G _C1To G _C32, and B _C1To B _C32Then obtain colour difference signal α (=R-G) and β (=G-B), the distribution of α and β as shown in Figure 3.Every kind of bank note A, B and C have one 32 group.LUT114 produces a code C _g, R, the G of indication original paper image and B value are near which group of bank note A, B and C.LUT114 also produces a code C _n, which in interior 1 to 32 o'clock indication R, G and B value approach to organize recently most.For example, in Fig. 3, produce C _g=2(B group), C _n=6.Detailed structure is shown in Fig. 4.

Under R, G and the situation of B value near A, code C _gBe 1; Under R, G and the situation of B value near B, code C _gBe 2; Under R, G and the situation of B value near C, code C _gBe 3.Label 401 and 402 is represented subtracter, be used for from R, G and B value calculate α (=R-G) and β (=G-B).Label 403 is represented LUT, and it produces code signal C _g(corresponding to A, B and C, its value is followed successively by 1,2 or 3), indication α and β value are near which group of A, B and C among Fig. 3; It also produces code C _a(its value is any in 1 to 32), indication α and β value are near in 32 points of A, B and C which.When above-mentioned bee-line be equal to or greater than a predetermined value (promptly A, B and C completely without situation under), then produce C _g=0, C _n=0.Owing to because of colour difference signal α and β are only arranged monochrome information is lost at minute time-like, so will consider to use LUT404 and window comparator 405.Label 404 is represented the 2nd LUT, and it is stored corresponding to C _gAnd C _nThe standard value of G.For example, work as C _g=2 and C _n=6, generation standard sampling G value is G _B6G _B6Whether the G value of value and original paper image offers window comparator 405, satisfy thereby differentiate following condition:

G _b6-d≤GF≤G _b6+d……（1）

Wherein d represents predetermined constant.

Discrimination result is delivered to selector switch 406.When condition (1) satisfies, directly produce C _gAnd C _nWhen condition (1) is not given when satisfying C _gAnd C _nBe reset to 0 and send.By said process, the original paper image transitions becomes code information C _gAnd C _n, and be stored in the frame buffer 115.

For the whole zone of original paper, C _gAnd C _nValue writes after the frame buffer 115, and CPU116 reads those data from impact damper 115, and differentiates whether there is bank note.Above-mentioned discrimination process is described now.

Earlier the content in the frame buffer 115 is divided into a plurality of zones, as shown in Figure 5.Secondary sample is carried out to every M pixel in whole zone to original paper image 102, and converts code C to _gAnd C _n, resulting data are stored in the frame buffer 115.Therefore, by original paper being divided into a plurality of windows, just can obtain each zone with pre-sizing.

Next, form C in each zone _gAnd C _nHistogram.C _gHistogram shown in Fig. 6-1A or 6-2A.Supposition Fig. 6-1A to 6-1D represents the histogram in zone 1 now.Fig. 6-2A to 6-2D represents the histogram in zone 2.Get rid of C _g=0 because it keep off A, B and C any one.Corresponding to C _g=1,2,3 C _nHistogram shown in Fig. 6-1B, 6-1C, 6-1D, 6-2B, 6-2C and 6-2D.In above these figure, 6-1A and 6-2A represent number of pixels, and the color of these pixels is near being present in A, B in the target area and any of C.Each width of cloth of Fig. 6-1B, 6-2B, 6-1C, 6-2C, 6-1D and 6-2D is all represented any skew in colored 1 to 32 kind of colour in A, B and each group of C.Therefore, be present under the situation of target area C at bank note _gHistogram concentrate on 1,2 and 3 any.On the contrary, also can consider histogram from 1 to 32 equal distribution (this is the colour because of each position of 1 to 32 correspondence bank note shown in Figure 2, so if there is bank note, these colours should be included equably) of Cn.(1) is in zone 1, though histogram concentrates on C in the example of Fig. 6-1A to 6-2D _g=2, but C worked as _g=2 o'clock, C _nHistogram converge, can think that some similar colours are only accidental to include.On the other hand, (2) the zone 2, histogram concentrates on C _g=3, corresponding to C _g=3 C _nHistogram also be distributed in 1 to 32 equably, to such an extent as to might judge and have bank note.

Therefore, from C _gAnd C _nHistogram just be enough to calculate other parameter, finish discrimination process.

Work as C _g=1,2,3, the number=N of pixel _g(1), N _g(2), N _g(3)

Work as C _g=1 and C _m=1,2 ..., 32,

Number=the N of pixel ^A _n(1), N ^A _n(2) ..., N ^A _n(32)

Work as C _g=2 and C _n=1,2 ..., 32,

Number=the N of pixel ^B _n(1), N ^B _n(2) ..., N ^B _n(32)

Work as C _g=3 and C _n=1,2 ..., 32,

Number=the N of pixel ^C _n(1), N ^C _n(2) ..., N ^C _n(32)

In addition, suppose that the order that basis begins from maximum count value rearranges N _n(1) to N _n(32). next can calculate following parameter:

σ（1）＝ $\underset{\mathrm{K\; =\; 1}}{\overset{\mathrm{32}}{\mathrm{\Σ}}}$ K ²×N ^A _n（K）

σ（2）＝ $\underset{\mathrm{K\; =\; 1}}{\overset{\mathrm{32}}{\mathrm{\Σ}}}$ K ²×N ^B _n（K）

σ（3）＝ $\underset{\mathrm{K\; =\; 1}}{\overset{\mathrm{32}}{\mathrm{\Σ}}}$ K ²×N ^C _n（K）

Wherein, N _g(1), N _g(2), N _g(3): comprise the degree that colour approaches the pixel of A, B and C group;

σ (1), σ (2), σ (3): in A, B and C group, 1 to 32 distributed degrees.

From the above description as can be known, when following conditions satisfies, then conclude to have bank note.When K equals arbitrary value in 1,2 and 3,

N _g(K) 〉=th ₁With

σ（K）≥th ₂

Wherein, th ₁And th ₂It is predetermined constant.

Under the situation of as above being mentioned that has bank note, produce a gate signal from gate signal generation circuit 117, and remove the image of relevant range.

Fig. 7 A and 7B represent above-mentioned result.Fig. 7 A represents the original paper image, and bank note is placed on 701 and 702 position.Fig. 7 B represents the copy image that produces.The result who differentiates shows that in the position 703,704,705 and 706 have bank note to exist, and sends gate signal, so the image that runs off in the relevant range is (dash area) of deceiving

Second embodiment:

Fig. 8 is the block diagram of second embodiment.About omitting with the description of Fig. 1 same section.Smoothed filter circuit 801 and line buffer 802 are delivered in the output of UCR circuit 112.Selector switch 118 is delivered in the output of smoothed filter circuit 801 and line buffer 802, and switches according to the gate signal as identification result that gate signal generation circuit 117 sends.In this case, in concluding the zone that the bank note existence is arranged, will produce a blurred picture, so just can not reach the purpose of duplicating specific image through smoothing processing.

Fig. 9 represents another example of LUT114 structure.Corresponding to C _g=1,2 and 3, three LUT are arranged here, be respectively 901,902 and 903, all receive R, G and B signal.Each LUT independently produces C _nSignal.Three frame buffers 904,905 and 906 also are mutually independently.Content in the CPU116 sequential access frame buffer 904 to 906, and independently differentiating processing with the similar mode of embodiment shows that whether corresponding C of result that bank note exists is arranged thereby judge _gOne of=1,2 and 3.If deliver to 4 to 5 higher in 8 R, G of R, the G of each LUT901 to 903 and 107 outputs of B signal delivery/number converter and the B signal, the capacity of these LUT just can be littler so.

According to the abovementioned embodiments of the present invention, utilize structure relatively simply to install and just can prevent to forge criminal offence.Since differentiate it only is to make according to the color of original paper, irrelevant with position and angle that the ticket of bank note and so on is put, so the result who obtains is just very stable.In addition, even differentiate a plurality of targets, or a target changed, and just can handle this class situation easily as long as change tracing table.

In the above-described embodiments, R, G and B signal are used as input signal.Yet, also can adopt such as (Y, M, C), (L ^*, a ^*, b ^*), (Y, I, Q), (Cb) and so on signal is as input signal for Y, Cr.On the other hand, though colour difference signal R-G and G-B have been used to differentiate color, they also can convert to such as (Y, I, Q), (L ^*, a ^*, b ^*), (L, U, V), (H, L, S) and so on signal.Code information also can be by not only comprising colour but also is comprised that the distributed in three dimensions of brightness constitutes.Judging under the situation that has specific original paper that the process of execution is not limited to tints and for to make image blurring smoothing processing, can also carry out and handle other different processing of general original paper, as stopping to duplicate.

As mentioned above, the invention provides a kind of color image processing apparatus that can accurately differentiate specific original paper.

The 3rd embodiment:

Figure 10 is the 3rd embodiment of copy device, and image reading apparatus wherein is housed according to the present invention.

In copy device shown in Figure 10, original paper 1001 is placed on the original paper base plate glass 1002, and when prescan and main sweep, original paper 1001 by rod-shaped lens group 1004, forms image by 1003 irradiations of original paper illumination Halogen lamp LED on the capable reader 1005 of CCD.R, G and the pointwise of B color separation color filter are sequentially applied on the capable reader 1005 of CCD.According to R, G, B, R, G, B ... order, reader 1005 produces the color separation signal of original paper to each pixel and each row.

Label 1006 representative sampling and holding circuits (writing the S/H circuit later on).The output signal of capable reader 1005 each pixel of 1006 couples of CCD of S/H circuit is all taken a sample and is kept.A/D converter (writing A/D converter later on) 1007 becomes digital signal with the analog signal conversion of S/H circuit 1006 outputs.Shading correction circuit 1008 is proofreaied and correct the output pulsation that is caused by the change of sensitivity between capable reader 1005 pixels of CCD.According to the characteristic of CCD, 1009 couples of R from shading correction circuit 1008 of circuit, G are covered in input and the B signal covers processing.Import the output signal of covering circuit 1009 and deliver to histogram formation circuit 1010 and model unit 1017, these will illustrate afterwards.

Histogram forms circuit 1010 bases and covers R, G and the B signal formation histogram that circuit 1009 obtains from input, and the stage deposits it in storer 1014 afterwards.Model unit 1017 has first model 1015 and the second model 1016a to 1016n, is used for contrasting with the view data of the original paper of having read.Label 1015 is represented storer (first model), is used for storing the pattern-information of a plurality of specific original papers, for example the bank note of n country's distribution.According to general pattern-informations such as the color of the bank note of each the country distribution that deposits in, shapes, just can test, look at whether the image of importing may be with wherein any one be consistent.Label 1016a to 1016n represents storer (second model), is used for storing the details of the corresponding bank note of each pattern-information that has deposited in first model, such as pattern, color etc.The input picture of being differentiated by first model is further differentiated in detail.

Label 1018 is represented an OR circuit.Have a result who shows discriminating at least for there being bank note in the output of the second model 1016a to 1016n, this distinguishing signal just is sent to switch element 1012 so, thus stopcock unit 1012.So do not send normal view data, prevented the criminal offence of counterfeit note to printing off unit 1013.

Chroma processing circuit 1011 is finished the color processing process, for example to number conversion, cover, UCR(owes color separation) etc.Stage is controlled the working condition of printing off unit 1013 to switch element 1012 afterwards.Print off unit 1013 and for example can print off mechanism, when switch element 1012 is in on-state, prints off the unit and place the mode of printing off by a laser.Storer 1014 storages form the histogram that circuit 1010 forms by histogram when prescan.The CPU of the whole device of label 1021 representative controls; Label 1022 representatives have had the ROM of the control program (program that flow process Figure 11 represents and similar program) of operation CPU1021; Label 1023 is represented RAM, is used as the workspace of various programs.

Explanation now has the working condition of the device of said structure.

Figure 11 is a width of cloth process flow diagram, is used for illustrating the control situation of the duplicating process that the CPU1021 by embodiment carries out.

The course of work of prescan mode at first is described.Under the prescan mode, detect size, the density of original paper usually, or the like.Yet in the present embodiment, also finish following process.According to the copy command (step S1) that an operating unit (not shown) sends, the former Figure 100 1 that is placed on the original paper base plate glass 1002 is shone by Halogen lamp LED 1003, and forms image (step S2) on the capable reader 1005 of CCD.Signal by reader 1005 conversion is delivered to S/H circuit 1006, and each pixel is all taken a sample and kept.After this, A/D converter 1007 becomes digital signal with conversion of signals.Next, the digital signal of R, G and B is covered circuit 1009 through shading correction circuit 1008 and input, carries out shading correction and covers processing.Output signal R, G and B that circuit 1009 is covered in input deliver to histogram formation circuit 1010 and model unit 1017.Forming histogram that circuit 1010 forms by histogram temporarily is stored among the storer 1014.On the other hand, send into the signal and the contrast of the content in first model 1015 of model unit 1017, thereby differentiate whether there is bank note (step S3).The control procedure of relevant discriminating is finished by CPU1021.Like this, when concluding that input image data and all bank note that is deposited with among the second model 1016a to 1016n all can not have when relation, the signal of a switch connection is sent to switch element 1012, so switch element 1012 is connected, begins normal duplicating process.On the contrary, when conclude that input image data and any bank note that is deposited with among the second model 1016a and the 1016n have when relation, utilize second model to carry out detailed discriminating again in main sweep process next time.

By the above course of work, prescan has just been finished, and next is the main sweep (step S5) of finishing normal duplicating.Main sweep is to carry out altogether four times Y, M, C and K with the similar mode of first embodiment.Being similar to processing in the prescan is performed until input and covers circuit 1009 and send signal.Covering signal that circuit 1009 sends by input is sent to histogram and forms circuit 1010 and model unit 1017.Histogram forms circuit 1010 by histogram and forms according to the signal that transmits; Afterwards the stage, chroma processing circuit 1011 is carried out aforementioned predetermined color processing process.After this, when switch element 1012 was connected, the color processing signal was delivered to through switch element 1012 and is printed off unit 1013, exports a hard copy.The working condition of switch element 1012 connection/shutoffs during explanation scanning now.Form the histogram that circuit 1010 forms by histogram and be sent to storer 1014, and controlled by CPU1021, the histogram of storing during with prescan is (step S6) relatively.Result relatively delivers to switch element 1012, and when two width of cloth histograms are consistent (step S7), switch element 1012 keeps on-state, and finishes normal duplicating process (step S8).If two width of cloth histograms inconsistent (step S7), the original paper the when original paper when this means prescan so is different from main sweep also might be placed on bank note on the original paper base plate glass after finishing prescan.Therefore, switch element 1012 turn-offs, and stops to duplicate.

By above treatment scheme, just can check, whether the original paper that the original paper when looking at prescan is placed on the original paper base plate glass 1002 during with main sweep is different.If original paper has been changed, just forbid duplicating.

In addition, when prescan, conclude under the situation that may have bank note, the signal of delivering to model unit 1017 in the main sweep process arrives second model 1016 through first model, after finishing main sweep (step S9), pattern-information, chromatic information etc. is compared (step S10) respectively, because the kind of specific original paper, promptly the dissimilar bank note of country variant is differentiated earlier in first model 1015 when prescan.Like this, have nothing to do if conclude input image data and bank note, the switch connection signal is just delivered to switch element 1012, and switch element 1012 keeps on-states, and begins normal duplicating process (step S12).On the contrary, if conclude and have bank note, the switch cut-off signals is just delivered to switch element 1012, and switch element 1012 turn-offs, and stops to duplicate.

As mentioned above, according to present embodiment, carry out two types comparison process in first model and second model, first model has the color distribution data of multiple bank note, and second model is more detailed, has the data of different types of bank note.Therefore, this just may prevent to need the time owing to identification note, and makes the duplicating time become longer than the general duplicating time.

In addition, because whether the original paper when also the original paper will differentiate prescan the time is with main sweep is identical, so just might prevent to finish the criminal offence of counterfeit note by the transposing original paper behind the prescan.

In above-mentioned the 3rd embodiment, with the example of bank note as the object that prevents to forge.Yet the present invention is not limited to this, and it can also be used for preventing forged stocks and security, various contract specification, or the like.

Various types of machines that print off, as photoelectric type laser print off machine, heat is duplicated transfer printing and is printed off machine, dot printer, ink-jet printer, or the like, all can be used as and print off unit 1013.

The algorithm that adopts among first embodiment also can be as the algorithm of the discrimination process of finishing in above-mentioned model.Above-mentioned each model all is made of RAM, ROM and similar assembly.Therefore, rewrite the interior ROM that perhaps changes among the RAM usually, just might adapt to the situation (for example, the pattern of bank note, color etc. change) that the object forbidding duplicating has changed.

The 4th embodiment:

Figure 12 represents the block diagram as the 4th embodiment of copy device major part, and image reading apparatus wherein is housed according to the present invention.Parts similar to FIG. 10 are marked with identical label among the figure.The similar of input block 1030 is imported in Figure 10 and is covered circuit 1009 structure of part before.In the 4th embodiment, the signal that the permission that model unit 1017 sends is printed is directly delivered to and is printed off unit 1013.

In the main sweep process, the output signal R of input block 1030, G and B deliver to histogram and form circuit 1010 and model unit 1017.The signal of delivering to histogram formation circuit 1010 transmits along the path that is similar among the 3rd embodiment, and transfers to print unit 1013 when switch element 1012 is in on-state.

It is not shown that model unit 1017 has the first model 1015(that is similar to the 3rd embodiment) and the second model 1016a to 1016n(not shown).Utilize these models, differentiate to have or not bank note to exist in the original paper.At this moment, exist if conclude no bank note, then function class be similar to switch connection signal among the 3rd embodiment allow print off signal and directly deliver to and print off unit 1013.On the contrary, if conclude and have bank note, then deposit the data of concluding in the address that has bank note in the original paper and deliver to and print off unit 1013.When receiving the signal that comprises this data, print off part blacking and output that unit 1013 indicates this address date.In this case, if provide an AND circuit at the data input unit that prints off unit 1013, blacking is handled and just can be finished at an easy rate, the view data of depositing in the address of this AND circuit with object that will blacking as with condition.

By above structure, also can obtain being similar to the effect of the 3rd embodiment.

The 5th embodiment:

The similar of the 5th embodiment is in the 4th embodiment above-mentioned.Received the print unit 1013 of the address date that sends from model unit 1017, corresponding to the address date of being received, produced piece image, this image is ambiguous to a certain extent, so that can not be used as bank note.Also can adopt the method for mosaic processing and so on.

By above structure, also can obtain being similar to the effect of first embodiment.

As mentioned above, according to the present invention, be a specific original paper if conclude the original paper image, so just can absolute prohibition to its duplicating.

Figure 13 is the inner structure block diagram of picture sweep unit of the copy device of the sixth embodiment of the present invention.Among the figure, label 2101 is represented A/D converter, and it will be from image-input device, for example capable reader of CCD, main frame (not shown), and the analog signal conversion that obtains becomes digital signal.Label 2102 is represented the shading correction circuit, and it carries out shading correction to digitized R, G and B signal.Label 2103 representative is by tracing table ROM(or RAM) constitute to (log) transducer, it will convert density signal to through R, G and the B signal (luminance signal) of shading correction.Circuit is covered in label 2104 representatives, and the 2105th, the UCR circuit.2105 pairs of density signals that obtain from logarithmic converter of circuit 2104 and UCR circuit cover processing and UCR(owes color separation by covering) handle.

Label 2111 is represented a desaturation circuit, is used for calibrated R, the G and the B signal that obtain from the shading correction circuit are carried out the desaturation processing.The structure of desaturation circuit 2111 is illustrated with reference to Figure 14.Label 2112 is represented a specific original paper discriminating unit, and it differentiates whether there is a specific original paper according to the R through desaturation, the G and the B signal that obtain from desaturation circuit 2111.The structure of specific original paper discriminating unit 2112 is illustrated with reference to Figure 16.

Figure 14 is the circuit diagram of desaturation circuit 2111 structures of expression the 6th embodiment.Among the figure, label 2201a, 2201b and 2201c represent contactor, and they are triggered by the time clock CLK identical with picture signal.Label 2202a, 2202b and 2202c also represent trigger, and they are by the hour hands pulse CLK ' triggering to obtaining behind CLK signal four frequency divisions.The waveform of time clock CLK2203 and CLK ' 2204 also is shown among Figure 14.Desaturation circuit 2111 is work like this, so that n predetermined time clock of every appearance just taken a sample to time sequence image data.

The structure of copy device is described now.

Figure 22 is the sectional view of the copy device inner structure of the expression sixth embodiment of the present invention.Among the figure, label 1201 representative image scanning elements are used for reading original paper and carry out digital signal processing; The 1202nd, print off the unit, it is imprinted on image on the paper in panchromatic mode according to the original paper image of having been read by picture sweep unit 1201, and with its output.

In picture sweep unit 1201, label 1200 is represented the minute surface pressing plate.The original paper 1204 that is placed on the original paper base plate glass (being called platen later on) 1203 is shone by lamp 1205.Reflected light shines on reflective mirror 1206,1207 and 1208, goes up at a triplex row reader (after be called CCD) through lens 1209 and forms image, and reader is to be made of three R, G being arranged in parallel and the capable reader of B.View data is delivered to signal processing unit 1211 as full color information component red (R), green (G) and blue (B).Lamp 1205 and reflective mirror 1206 are done mechanical motion with speed V.Reflective mirror 1207 and 1208 is also done mechanical motion with speed V/2, and its direction of motion (rescan direction) is vertical with the electric scanning direction (main scanning direction) of row reader, and therefore the Zone Full to original paper all scans.1211 pairs of picture signals of reading of signal processing unit are carried out electric treatment, it is separated into component magenta (M), dark green (C), yellow (Y) and black (BK), and delivers to and print off unit 1202.Carry out once independent scanning by 1201 pairs of original papers of picture sweep unit, the one-component among M, C, Y and the BK just is sent to and prints off unit 1202.Finish once independent printing off altogether and will do four scanning original paper.

Picture signal M, the C, Y or the BK that send here from picture sweep unit 1201 deliver to laser driver 1212.Laser driver 1212 is according to image signal modulation and drive semiconductor laser 1213.Laser beam is by polygon prism 1214, f-θ lens 1215 and reflective mirror 1216 reflections and transmit scanning on photosensitive drum 1217 then.

Label 1218 is represented rotary developing device, and it comprises: pinkish red developing cell 1219, dark green developing cell 1220, yellow developing cell 1221 and black developing cell 1222.Above-mentioned four kinds of developing cells alternately contact with photosensitive drum 1217, so the toner of the electrostatic latent image that forms on drum 1217 by respective color develops.

Label 1223 represents one to duplicate transfer drum.Send next paper roll to around duplicating on the transfer drum 1223, from dress carton 1224 or 1225 on photosensitive drum 1217 so the image that shows just has been transferred on the paper.

After the image of M, C, Y and four kinds of colors of BK was transferred on the paper in order, paper was sent copy device then through a fixation unit 1226.

Figure 16 A is the block diagram of expression specific original paper discriminating unit 2112 structures shown in Figure 13.Figure 17 is the block diagram of expression integrator 4011 to 4018 typical structures.Figure 18 A and 18B explain the result of integration according to the 6th embodiment.Figure 19 A and 19B illustrate the relation between the specific original paper and the color space.Figure 20 illustrates the color space data of specific original paper and differentiates the relation between the data among the ROM2401.Figure 21 represents the position relation between specific original paper and identified region.Figure 25 explanation utilizes the color space to differentiate the method for specific original paper.

Among Figure 16 A, differentiate that ROM2401 accounts for the ROM (read-only memory) that 8, address account for 15 by data and constitutes.Be stored among the ROM2401 corresponding to the data of 8 kinds of predetermined specific original papers.

Send as the address signal of differentiating ROM2401 from R, G and the B colour picture signal of picture sweep unit 1201.This information shows that the view data of the specific original paper shown in Figure 19 A, 19B and 20 is present in the space of corresponding R, G and B or does not deposit in as yet and differentiates among the ROM2401.Under the situation within the colour by input color signal 2313,2314 and 2315 representatives is included in the color distribution scope of the specific original paper A shown in the dash area and B image section in the rgb space of Figure 19 A and 19B, the output signal of differentiating ROM2401 is " 1 ", otherwise is " 0 ".

The authentication information that ROM2401 produces sends integrator 4011 to 4018 to through latch cicuit 2402.

Because the structure of integrator 4011 to 4018 is identical, so be that example is illustrated with integrator 4011 now.

Figure 17 is the block diagram of explanation integrator 4011.

Among Figure 17, label 2501 and 2504 is represented multiplier; The 2502nd, totalizer; The 2503rd, adjust the electrical equipment that latchs of sequential.Multiplier 2504 is 0 or 1 at the value of i signal Xi(Xi) make multiplying Xi * 255(1-β), utilize predetermined weighting coefficient β.The result who takes advantage of delivers to the B input end of totalizer 2502.On the other hand, multiplier 2501 is made multiplying Yi-1 * β at (i-1) individual output signal Yi-1, and this signal is from latch cicuit 2503.The result who takes advantage of delivers to the A input end of totalizer 2502.Totalizer 2502 is done additive operation.Xi * 255(1-β)+Yi-1 * β, add the result for Yi.Like this, 4011 pairs of all input data of integrator are carried out the integral process by following formula (2) expression:

Yi＝Xi×255（1-β）+Yi-1×β……（2）

By above integral process, under the situation that the input value " 1 " of integrator 4011 remains unchanged shown in Figure 18 B, the output valve of integrator 4011 will reach 255, shown in Figure 18 A.On the other hand, if input value remains " 0 ", then output valve will reach 0.

Because the structure of comparison operation unit 4001 to 4008 is identical, so be that example is illustrated with comparison operation 4001 now.The size of the output valve A of integrator 4011 is compared with the size that is stored in the predetermined constant B in the register 4021.According to following condition (3), produce the distinguishing signal C1 that shows comparative result:

C ₁＝1（A ₁＞B ₁）

C ₁＝0（A ₁≤B ₁）……（3）

By above process as can be known, under the situation that the view data of the specific original paper of input color signal one direct sum is consistent, the output signal C of comparison operation unit 4001 ₁Be 1.The working method of other comparison operation unit 4002 to 4008 and register 4022 to 4028 is similar with register 4021 to comparison operation unit 4001.

Counter 2421 to 2428 also has identical structure.Only as output signal C ₁Be 1 o'clock, counter 2421 increases progressively.The pixel number that is comprised in 2421 pairs of specific original paper identified regions corresponding with Figure 21 dash area of counter is counted.

One " or " 2411 pairs of the write circuits output signal C of arithmetic element 4011 to 4008 relatively ₁To C ₈Do inclusive-OR operation, and write RAM2412.RAM2412 is identical with the capacity of differentiating ROM2401, and data account for 8, and the address accounts for 16.

Figure 16 B be one " or " block diagram of write circuit 2411.Label 2412 is represented the SRAM of 32K.Each all delivers to input end A as address bus by 5 signal R, G that form and B ₀To A ₁₄Finish inclusive-OR operation (this will be illustrated afterwards) data 4021 to 4028 afterwards and deliver to input end D ₀To D ₇, as data.Label 4112 is represented timing generator circuit, and it sends the clock signal shown in Figure 16 C.

In the inclusive-OR operation operation part that dotted line is indicated by time clock CLK ' sequential, according to entering input end A ₀To A ₁₄The address of input signal appointment, respond to allowing read output signal OE, from input end D ₀To D ₇Read the data of storage, and be latched among the latch cicuit.On the other hand, OR circuit is done inclusive-OR operation to input signal 4021 and latched data, by anti-phase sequential RiO, produces the result of inclusive-OR operation from impact damper.

If have at least the data by input signal 4021 to 4028 order inputs to equal " 1 " for each R, G and specified address of B signal that comprises 5, data " 1 " are just deposit SRAM2412 in so.

Because input signal D ₀To D ₇Be to be stored among the separate address, carry out so the discrimination process of eight kinds of specific original papers can walk abreast.

By counting, just can calculate in Figure 25 rgb space volume as the dash area of enumeration data to being stored among the RAM2412 as the quantity of " 1 " position of identification result.

Among Figure 16 A, the CPU of the whole specific original paper discriminating unit 2112 of label 2415 representative controls; 2415a is ROM, and its storage is for program CPU2415 work usefulness, that obtain according to the process flow diagram of Figure 15 etc.; 2415b is the RAM as various program works district.CPU2415 is mainly used to the data among read-out counter 2421 to 2428 and the RAM2412, and differentiates in the input original paper whether have the target original paper.

The input of integrator is represented with Xi among Figure 17, and output is represented (1≤i≤8) with Yi.Calculate according to following equation (4):

Yi+1＝β.Yi+255（1-β）Xi……（4）

In the following formula (4), β is the constant according to the integrator storage effect.In the scope of 0＜β＜1, satisfy following relationship:

0←β→1

(little) (storage effect) (greatly)

That is, shown in Figure 18 B of institute, the value that β sets was near 1 o'clock, and the integrated value change curve slowly changes.On the contrary, the value that β sets is near 0 o'clock, the change curve flip-flop.In the present embodiment, β=31/32.

The target of supposition identification here is the equally big original paper of sensitive paper coin.Yet if less original paper image, for example stamp etc. as recognition objective, is set β more less so, and is as 7/8, comparatively suitable.β also can be set at arbitrary value by the scanning element (not shown) according to recognition objective.

The 6th embodiment:

Figure 15 is the process flow diagram of the CPU2415 control procedure among explanation the 6th embodiment.

At first, when detecting when beginning to read the information of original paper, when reading original paper and begin with INH signal 2404 resets (step S1201).Afterwards, send at step S1202 and read original paper instruction.At step S1203, variable n set.That is to say that the count value of n counter deposits RAM2412 in order in.At step S1204, the count value of the counter among Figure 16 A is in this case because n=1, so the variable range among the RAM2412 is read and deposited in to the count value of counter 2421 just.

At step S1205, calculate the sum of " 1 " data in the variable range of Figure 16 ARAM2412.This sum is established and is made variable V OL.

The value of dash area volume, i.e. VOL=Tid among variable V OL representative expression Figure 25.

At step S1206, check, look at whether the value of variable range is equal to or greater than predetermined constant K.

The value of variable range is corresponding to the number of pixel in the identified region of representing with dash area among Figure 21.Therefore, whether by the size of the value of variable range and the size of constant K are made comparisons, just can identify may be relevant with bank note in the input picture.That is, when the value of variable range greater than K, then concluding might be relevant with bank note in the input picture.

At step S1207, calculate the value of the variable V OL that in step S1205, has set, calculate view data measured in the color space by following formula (5) expression and the similarity coefficient γ between the specific original image data simultaneously, and similarity coefficient γ and constant ρ are compared.

Among Figure 25, TORG represents the view data (being called special image data later on) of specific original paper, is existed in the register before it, corresponding to the dash area in the rgb space, and indicates a volume in RGB coordinate space.Tid represents to read the view data (being called tested view data later on) of original paper, and it is corresponding to dash area, and those tested view data that wherein make the output signal of comparison operation unit 4001 to 4008 be changed to " 1 " show in rgb space.Tid indicates a volume in RGB coordinate space.Similarity coefficient γ under above situation represents with following formula (S):

γ＝Tid/TORG

Because the value of similarity coefficient γ is near 1, so tested view data and special image data similarity are very high.

Because VOL=Tid

VOL

So judgement γ=≤ γ ... (6)

TORG

(wherein, γ (gamma) is the constant of being determined by experiment, coincidence factor supposition γ=0.7 in the expression color space).

If the result who differentiates is genuine, just can conclude that tested view data and special image data similarity are very high, so should forbid duplicating.

In above structure, trigger 2202a, 2202b among Figure 14 and the output of 2202c are the data that obtain after 1/4 by being with the picture signal desaturation.Therefore, this just is enough to make the LUT(tracing table of the discriminating ROM2401 among Figure 16 A) operating rate only for conventional apparatus 1/4.

As mentioned above, in the chrominance component leaching process of colored original paper, jumbo LUT can be made of response speed quite slow ERPOM and like.In other words, can keep the capacity of LUT and the balance between response speed.

The 7th embodiment:

Figure 23 is the block diagram of desaturation circuit 211 structures of expression the 7th embodiment.Here only drawn about the desaturation circuit of R, with this example of R, G and B desaturation circuit as an illustration.Identical among time clock CLK and CLK ' and Figure 14.In Figure 23, label 2301 representatives are by the trigger of time clock CLK control, and it kept picture signal before carrying out the desaturation processing; The 2302nd, totalizer; The 2303rd, maintenance additive operation result's trigger; 2304 is AND gates, calculates the Q output signal and the RST(2305 of trigger 2303) between the reset signal " with " relation, every through four cycles of time clock CLK, just with RST(2305) reset is once.

Label 2306 is represented a shift circuit, it with totalizer 2302 calculate the result multiply by 1/4; 2307 representatives are by the trigger of time clock CLK ' control.In above structure, every through four cycles of time clock CLK, just produce the mean value of four adjacent image points.Smoothing processing and desaturation processing to four pixels are carried out simultaneously.As mentioned above, the desaturation circuit of the 7th embodiment obtains the summation averaging value of the time sequence image data of predetermined n time clock, and then sampling.

In above situation, eliminated the random noise that is included in the original paper picture signal, improved the precision of colored discriminating.

As mentioned above, according to the present invention, in the chrominance component leaching process of colored original paper, jumbo LUT can be made of response speed quite slow EPROM and like.In other words, can keep the capacity of LUT and the balance between response speed.

The present invention is not limited to the above embodiments, in the spirit and scope of appended claims of the present invention, can make multiple modification.

Claims (29)

1, a kind of image processing apparatus comprises:

A) be used for the input media of input color image information;

B) be used for the color distribution of basis, differentiate whether color images information comprises the identification device of predetermined image from the color image information of described input media input; And

C) treating apparatus of color image information being handled according to the identification result of identification device.

2, according to the device of claim 1, wherein color image information is made of a plurality of color component signals.

3, according to the device of claim 1, wherein said color distribution is the distribution of described color image information in the color space.

4, according to the device of claim 1, wherein said predetermined image is a bank note.

5, according to the device of claim 1, wherein said treating apparatus comprises the image processing system that forms a width of cloth visual picture according to described color image information.

6, according to the device of claim 5, wherein said image processing system is that a laser prints off machine.

7, a kind of image processing method may further comprise the steps:

A) input color image information; And

B), differentiate whether color image information comprises predetermined image according to the color distribution of input color image information.

8, according to the method for claim 7, wherein said color image information is to import by the image reading apparatus that is made of the CCD reader.

9, according to the method for claim 7, wherein color image information is made of a plurality of color component signals.

10, according to the method for claim 7, wherein said color distribution is the distribution of described image information in the color space.

11, according to the method for claim 7, wherein said predetermined image is a bank note.

12,, also comprise the step of handling color image information according to the identification result in the described discriminating step according to the method for claim 7.

13, a kind of image processing apparatus comprises:

A) be used for color image information being converted to the conversion equipment of a plurality of code informations according to chromatic information;

B) be used for collecting described a plurality of code information and forming histogrammic treating apparatus in each presumptive area;

C) differentiate according to described histogram whether the image by described color image information representative is the identification device of predetermined image; And

D) control device of the processing procedure of described image information being controlled according to the identification result of described identification device.

14, according to the device of claim 13, wherein the similarity between described color image information and the predetermined benchmark image information is represented in each described code information.

15, according to the device of claim 14, wherein said predetermined benchmark image information is based on described predetermined image.

16, a kind of image processing apparatus comprises:

A) be used to import the input media of a plurality of color component signals;

B) tracing table device, as the address, and output data is to differentiate by the image of described a plurality of color component signal representatives and the similarity between the predetermined image with described a plurality of color component signals for it; And

C) control device of the processing procedure of said a plurality of color component signals being controlled according to the output data of described tracing table device.

17, according to the device of claim 16, wherein said predetermined image is a bank note.

18, according to the device of claim 16, wherein the discriminating to described similarity is that the distribution in the color space is finished according to described a plurality of color component signals.

19, according to the device of claim 16, wherein said tracing table device is a RAM or a ROM.

20, according to the device of claim 16, wherein said treating apparatus comprises image processing system, is used for forming a width of cloth visual picture according to described color image information.

21, a kind of image processing apparatus comprises:

A) be used for the original paper image is scanned and produces the readout device of view data;

B) first identification device, the view data that it produces according to described readout device is differentiated the identical point between original paper image and the predetermined image; And

C) treating apparatus of the described view data of processing,

Wherein said readout device produces the view data of being differentiated by described identification device by scanning for the first time, and produces the view data of being handled by said treating apparatus by scanning for the second time,

Described device also comprises:

D) second identification device, it is differentiated the identical point between target that scans for the first time and the target that scans for the second time.

22, according to the device of claim 21, wherein said predetermined image is a bank note.

23, according to the device of claim 21, wherein said first identification device is to finish according to the distribution of view data in the color space that is produced by described readout device to the discriminating of identical point.

24, according to the device of claim 21, wherein said treating apparatus comprises image processing system, is used for forming a width of cloth visual picture according to described color image information.

25, according to the device of claim 21, wherein said second identification device is to finish according to the histogram of the view data that is produced by described readout device to the discriminating of identical point.

26, a kind of image processing apparatus comprises:

A) be used to import the input media of a plurality of color component signals, each color component signal has the n position;

B) color component signal is converted to each and have only the m position (conversion equipment of the color component signal of n＞m); And

C) according to m position color component signal, to by the image of the color component signal representative of described input media input and the identification device that the identical point between the predetermined image is differentiated.

27, a kind of image processing apparatus comprises:

A) input media of input image data;

B) the desaturation device that will spatially become sparse from the view data of described input media input media input;

C) table conversion equipment can produce whether the original paper that is used for according to importing through the view data discriminating of described desaturation device desaturation is the data of specific original paper; And

D) according to the output of described table conversion equipment control device to controlling from the processing procedure of the described view data of described input media input.

28, according to the device of claim 27, wherein said desaturation device comprises every n the predetermined device that time clock is just taken a sample to time sequence image data.

29, according to the device of claim 27, wherein said desaturation device comprises the summation averaging value of the time sequence image data that can draw predetermined n time clock and the device of then taking a sample.

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