CN102098416A - Frequency modulation and amplitude modulation network control method and device - Google Patents

Abstract

The embodiment of the invention discloses a frequency modulation and amplitude modulation network control method and a frequency modulation and amplitude modulation network control device. The frequency modulation and amplitude modulation network control method comprises the following steps of: generating a first filter matrix and a second filter matrix; initializing a dyeing matrix, a threshold matrix, a threshold, a black dyeing probability matrix and a white dyeing probability matrix; selecting pixel points to be dyed black according to the dyeing matrix, the black dyeing probability matrix and the first filter matrix; dyeing the pixel points black; selecting the pixel points to be dyed white according to the dyeing matrix updated once, the white dyeing probability matrix and the second filter matrix; dyeing the pixel points white; judging whether all pixel points are dyed; and if undyed pixel points exist, repeating the step of dyeing the pixel points. The method and the device are suitable to be used for controlling amplitude modulation characteristics of frequency modulation mesh points in printing plate making equipment.

Description

FMAM network control method and device

Technical field

The present invention relates to linked network plate-making technology field, particularly a kind of FMAM network control method and device.

Background technology

The linked network plate-making technology that relates generally to printer and high-grade plate making equipment is duplicated in the hard copy of image, and this technology is called the digital picture halftone technique again.The linked network plate-making technology can be divided into two classes: amplitude modulation screening plate-making technology and frequency-modulation screening plate-making technology.The amplitude modulation screening plate-making technology is called the orderly dither technique of accumulation point again, it is characterized in that the stain of the half tone image that generated is adjacent to flock together on the geometric position in twos, has formed the pigmented section of cluster cluster, and these pigmented section are called as the site.In the amplitude modulation screening plate-making technology, control the half tone reproduction of original image by the network point area, controlled site is called as the amplitude modulation site.

Different with the amplitude modulation screening plate-making technology, generate in the process of half tone image at the frequency-modulation screening plate-making technology, avoid the gathering of stain on the geometric position as far as possible.The frequency-modulation screening plate-making technology is realized the half tone reproduction of original image by the number of stain in the control unit are.Adopting stain in the half tone image that the frequency-modulation screening plate-making technology generates is that form with non-gathering distributes, different original copy gray scales, average distance difference between the corresponding stain, from the angle of Digital Image Processing, the frequency of image changes.The stain of taking the frequency-modulation screening plate-making technology to generate is called frequency-modulation halftone dot.

For the amplitude modulation site, if the adsorptivity of output physics equipment precision, attaching property of printing ink and the carrier of undertaking the printing of does not all reach requirement, the effect of frequency-modulation halftone dot reproduced image can be unable to catch up with the amplitude modulation site far away; And frequency-modulation halftone dot is lost a little in highlight area easily owing to the restriction of site size, and at the easy scumming in shadow zone, the level loss is serious.

FMAM is mixed screening technology and adds the amplitude modulation characteristic on the basis of traditional frequency-modulation halftone dot, makes the site size of frequency-modulation halftone dot also along with the variation of level constantly changes, and the assurance frequency-modulation halftone dot also has enough printing ink to transfer on the stock.FMAM is mixed screening multiple implementation, what FMAM screening technology commonly used at present adopted is the design of high light shadow symmetry, and promptly the amplitude modulation characteristic in highlight area and shadow zone (Changing Pattern of site size and site size) is just the same.

In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:

For most output equipments, the order of severity of losing a little of the scumming in shadow zone and highlight area is different, adopt the design of high light shadow symmetry, the amplitude modulation characteristic in highlight area and shadow zone is just the same, can not satisfy actual output demand.

Summary of the invention

Embodiments of the invention provide a kind of FMAM network control method and device, and the amplitude modulation characteristic of highlight area and shadow zone frequency-modulation halftone dot is distinguished to some extent, satisfy actual output demand.

The technical scheme that the embodiment of the invention adopts is:

A kind of FMAM network control method comprises:

Generate first electric-wave filter matrix and second electric-wave filter matrix;

Initialization dyeing matrix, threshold matrix, threshold value, dye black probability matrix and dye white probability matrix;

According to described dyeing matrix, dye the black probability matrix and first electric-wave filter matrix, select to wait to dye black pixel, polish described pixel black;

According to described through the dyeing matrix after once upgrading, dye the white probability matrix and second electric-wave filter matrix, select to wait to dye white pixel, polish described pixel white;

Judge whether all pixels all are colored,, then repeat above-mentioned step pixel dyeing if also have pixel not to be colored.

A kind of FMAM network control system device comprises:

Generation module is used to generate first electric-wave filter matrix and second electric-wave filter matrix;

Initialization module is used for initialization dyeing matrix, threshold matrix, dyes black probability matrix and dyes white probability matrix;

Dye black module, be used for according to described dyeing matrix, dye the black probability matrix and first electric-wave filter matrix, select to wait to dye black pixel, polish described pixel black;

Dye white module, be used for according to described through the dyeing matrix after once upgrading, dye the white probability matrix and second electric-wave filter matrix, select to wait to dye white pixel, polish described pixel white;

Judge module is used to judge whether all pixels all are colored.

Embodiment of the invention FMAM network control method and device, at first generate first electric-wave filter matrix and second electric-wave filter matrix, and initialization dyeing matrix, threshold matrix, threshold value, dye black probability matrix and dye white probability matrix, according to described dyeing matrix, dye the black probability matrix and first electric-wave filter matrix, selection waits to dye black pixel, polish described pixel black, according to described through the dyeing matrix after once upgrading, dye the white probability matrix and second electric-wave filter matrix, selection waits to dye white pixel, polish described pixel white, and repeat above-mentioned dyeing course, all be colored until all pixels.Compared with prior art, the present invention has adopted double filter mechanism, and threshold matrix is divided into two sections of front and back, adopts different filters respectively, make the amplitude modulation characteristic of high light part and shadow frequency-modulation halftone dot partly distinguish to some extent, thereby can satisfy the demand of different output equipments.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

The FMAM network control method flow chart that Fig. 1 provides for the embodiment of the invention one;

The FMAM network control method flow chart that Fig. 2 provides for the embodiment of the invention two;

The electric-wave filter matrix F that Fig. 3 a provides for the embodiment of the invention two _HlackSchematic diagram;

The electric-wave filter matrix F that Fig. 3 b provides for the embodiment of the invention two _WhiteSchematic diagram;

The initialization dyeing matrix B schematic diagram that Fig. 4 provides for the embodiment of the invention two;

The initialization threshold matrix T schematic diagram that Fig. 5 provides for the embodiment of the invention two;

Black probability matrix M is dyed in the initialization that Fig. 6 a provides for the embodiment of the invention two _BlackSchematic diagram;

White probability matrix M is dyed in the initialization that Fig. 6 b provides for the embodiment of the invention two _WhiteSchematic diagram;

Fig. 7 a for the embodiment of the invention two provide once upgrade after dyeing matrix B schematic diagram;

Fig. 7 b for the embodiment of the invention two provide once upgrade after threshold matrix T schematic diagram;

Fig. 7 c for the embodiment of the invention two provide once upgrade after dye black probability matrix M _BlackSchematic diagram;

Fig. 8 a for the embodiment of the invention two provide upgrade once more after dyeing matrix B schematic diagram;

Fig. 8 b for the embodiment of the invention two provide upgrade once more after threshold matrix T schematic diagram;

Fig. 8 c for the embodiment of the invention two provide upgrade once more after dye white probability matrix M _WhiteSchematic diagram;

The dyeing probability matrix that Fig. 9 provides for the embodiment of the invention two and the stack schematic diagram of electric-wave filter matrix;

The final threshold matrix T schematic diagram that Figure 10 provides for the embodiment of the invention two;

The final threshold matrix T schematic diagram that Figure 11 a provides for the embodiment of the invention three;

The gray value that Figure 11 b provides for the embodiment of the invention three is 20 two values matrix schematic diagram;

The gray value that Figure 11 c provides for the embodiment of the invention three is 235 two values matrix schematic diagram;

The FMAM network control system apparatus structure schematic diagram that Figure 12 provides for the embodiment of the invention four;

The FMAM network control system apparatus structure schematic diagram that Figure 13 provides for the embodiment of the invention five.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtained under the creative work prerequisite.

For the advantage that makes technical solution of the present invention is clearer, the present invention is elaborated below in conjunction with drawings and Examples.

Embodiment one

Present embodiment provides a kind of FMAM network control method, and as shown in Figure 1, described FMAM network control method comprises:

101, generate first electric-wave filter matrix and second electric-wave filter matrix;

102, initialization dyeing matrix, threshold matrix, threshold value, dye black probability matrix and dye white probability matrix;

103, according to described dyeing matrix, dye the black probability matrix and first electric-wave filter matrix, select to wait to dye black pixel, polish described pixel black;

104, according to described through the dyeing matrix after once upgrading, dye the white probability matrix and second electric-wave filter matrix, select to wait to dye white pixel, polish described pixel white;

105, judge whether all pixels all are colored, if also have pixel not to be colored, repeated execution of steps 103-104 then, otherwise finish.

Embodiment of the invention FMAM network control method, at first generate first electric-wave filter matrix and second electric-wave filter matrix, and initialization dyeing matrix, threshold matrix, threshold value, dye black probability matrix and dye white probability matrix, according to described dyeing matrix, dye the black probability matrix and first electric-wave filter matrix, selection waits to dye black pixel, polish described pixel black, according to described through the dyeing matrix after once upgrading, dye the white probability matrix and second electric-wave filter matrix, selection waits to dye white pixel, polish described pixel white, and repeat above-mentioned dyeing course, all be colored until all pixels.Compared with prior art, the present invention has adopted double filter mechanism, and threshold matrix is divided into two sections of front and back, adopts different filters respectively, make the amplitude modulation characteristic of high light part and shadow frequency-modulation halftone dot partly distinguish to some extent, thereby can satisfy the demand of different output equipments.

Embodiment two

As shown in Figure 2, described FMAM network control method comprises:

201, generate two electric-wave filter matrix F _BlackAnd F _White, wherein, two electric-wave filter matrix are W * H, the first electric-wave filter matrix F _BlackBe electric-wave filter matrix according to formula (1) generting element:

$F_{\mathrm{black}}[x,y]=f_1\left(\sqrt{{(x-\frac{W}{2})}^2+{(y-\frac{H}{2})}^2}\right)---\left(1\right)$

The second electric-wave filter matrix F _WhiteBe electric-wave filter matrix according to formula (2) generting element:

$F_{\mathrm{white}}[x,y]=f_2\left(\sqrt{{(x-\frac{W}{2})}^2+{(y-\frac{H}{2})}^2}\right)---\left(2\right)$

Wherein, W is the threshold matrix width, and H is the threshold matrix height, x ∈ [1, W], y ∈ [1, H];

In the present embodiment, threshold matrix width W=9, threshold matrix height H=9, filter function f ₁As the formula (3), filter function f ₂As the formula (4):

$f_1\left(t\right)=\left\{\begin{array}{c}0.1,t\&le;1.2\\ \mathrm{0.2,1.2}<t\&le;1.5\\ \frac{1}{{\mathrm{<figure-callout\; id="2"\; label="t"\; filenames="H2009102424303E00092.png"\; state="\{\{state\}\}">t</figure-callout>}}^2},t>1.5\end{array}\right.---\left(3\right)$

$f_2\left(t\right)=\left\{\begin{array}{c}-0.01,t\&le;1.5\\ \frac{1}{{\mathrm{<figure-callout\; id="2"\; label="t"\; filenames="H2009102424303E00092.png"\; state="\{\{state\}\}">t</figure-callout>}}^2},t>1.5\end{array}\right.---\left(4\right)$

Thereby, the first electric-wave filter matrix F of generation _BlackShown in Fig. 3 a, the second electric-wave filter matrix F of generation _WhiteShown in Fig. 3 b.

202, initialization dyeing matrix B is specially: B[x, y]=0, all pixels all are set to the state of being unstained; Wherein, B[x, y]=0 represent pixel [x, y] is not colored B[x, y]=-1 represent pixel [x, y] dyed black, B[x, y]=1 represent pixel [x, y] is dyed white;

Initialization threshold matrix T is specially: T[x, y]=0, elements all in the threshold matrix all is changed to 0;

Wherein, x ∈ [1, W], y ∈ [1, H], and all be integer;

Initialization threshold value Threshold is specially: Threshold=1;

Thereby, the dyeing matrix B after the initialization as shown in Figure 4, the threshold matrix T after the initialization is as shown in Figure 5.

203, black probability matrix M is dyed in initialization _Black, be specially: M _Black[x, y]=0.0; Wherein, M _Black[x, y] is that pixel [x, y] is dyed black probability, M _BlackOn behalf of all pixels, [x, y]=0.0 dyed black probability is identical;

White probability matrix M is dyed in initialization _White, be specially: M _White[x, y]=0.0; Wherein, M _White[x, y] is that pixel [x, y] is dyed white probability, M _WhiteOn behalf of all pixels, [x, y]=0.0 dyed white probability is identical;

Wherein, x ∈ [1, W], y ∈ [1, H], and all be integer;

Thereby dying after the initialization deceived probability matrix M _BlackShown in Fig. 6 a, dye white probability matrix M after the initialization _WhiteShown in Fig. 6 b.

204, dying black probability matrix M _BlackMiddle minimum value and the corresponding pixel coordinate [M_black, n_black] thereof sought, processing method is as follows:

Seek pixel coordinate [m_black, n_black], make B[m_black, n_black]=0, and M _Black[m_black, n_black]=min{M _Black, then [m_black, n_black] is exactly the next black pixel that soon dyed;

Because the M after the initialization _Black[x, y]=0.0, also promptly all pixels to be dyed black probability be identical, therefore, at the circulation time selected at random pixel coordinate first time [m_black, n_black]=[5,4], then pixel [5,4] is exactly the next black point that soon dyed.

205, it is black with pixel coordinate to be that the pixel of [m_black, n_black]=[5,4] is polished, and the specific implementation method is: make B[m_black, n_black]=-1, since [m_black, n_black]=[5,4], therefore, B[5,4]=-1, thereby the dyeing matrix B after the renewal is shown in Fig. 7 a;

Threshold matrix T is carried out assignment, is specially: T[m_black, n_black]=Threshold, the element assignment that just with coordinate among the threshold matrix T is [m_black, n_black] is Threshold, because [m_black, n_black]=[5,4], and Threshold=1, therefore, T[5,4]=and Threshold=1, thus the threshold matrix T after the renewal is shown in Fig. 7 b;

To dying black probability matrix M _BlackCarry out assignment, be specially: M _Black[m_black, n_black]=∞, so that can be not selected in pixel [m_black, the n_black] circulation afterwards, because [m_black, n_black]=[5,4], therefore, M _Black[5,4]=∞.

206, as shown in Figure 9, superimposed M _BlackWith F _Black, and translation F _Black, make M _BlackMiddle coordinate is the element and the F of [m_black, n_black] _BlackMiddle coordinate is

The element correspondence, for the M after upgrading _Black, the element in the matrix [x ', y '] the following corresponding relation of tool: $x^{\&prime;}=(m\_\mathrm{black}+x-\frac{W}{2})\mathrm{mod}W,$ $y^{\&prime;}=(n\_\mathrm{black}+y-\frac{H}{2})\mathrm{mod}H;$

After unrolling according to method shown in Figure 8, M _BlackWith F _BlackCorresponding matrix element addition, concrete grammar is: M _Black[x ', y ']=M _Black[x ', y ']+F _Black[x, y], thereby, in circulation for the first time, when pixel [5,4] dyed black after, dying black probability matrix M after obtaining upgrading _BlackShown in Fig. 7 c.

207, dying white probability matrix M _WhiteMiddle minimum value and the corresponding pixel coordinate [m_white, n_white] thereof sought, processing method is as follows:

Seek pixel coordinate [m_white, n_white], make B[m_white, n_white]=0, and M _White[m_white, n_white]=min{M _White, then [m_white, n_white] is exactly the next white pixel that soon dyed;

Because the M after the initialization _White[x, y]=0.0, also promptly all pixels to be dyed white probability be identical, therefore, at the circulation time selected at random pixel coordinate first time [m_white, n_white]=[4,6], then pixel [4,6] is exactly the next white point that soon dyed.

208, it is white with pixel coordinate to be that the pixel of [m_white, n_white]=[4,6] is polished, and the specific implementation method is: make B[m_white, n_white]=1, since [m_white, n_white]=[4,6], therefore, B[4,6]=1, thereby the dyeing matrix B after upgrading once more is shown in Fig. 8 a;

Threshold matrix T is carried out assignment, is specially: T[m_white, n_white]=W*H-Threshold+1, the element assignment that just with coordinate among the threshold matrix T is [m_white, n_white] is W*H-Threshold+1, because [m_white, n_white]=[4,6], and W=9, H=9, Threshold=1, therefore, T[4,6]=and W*H-Threshold+1=81, thus the threshold matrix T after upgrading once more is shown in Fig. 8 b;

To dying white probability matrix M _WhiteCarry out assignment, be specially: M _White[m_white, n_white]=∞, so that can be not selected in pixel [m_white, the n_white] circulation afterwards, because [m_white, n_white]=[4,6], therefore, M _White[4,6]=∞.

209, as shown in Figure 9, superimposed M _WhiteWith F _White, and translation F _White, make M _WhiteMiddle coordinate is the element and the F of [m_white, n_white] _WhiteMiddle coordinate is

The element correspondence, for the M after upgrading _White, the element in the matrix [x ', y '] has following corresponding relation: $x^{\&prime;}=(m\_\mathrm{white}+x-\frac{W}{2})\mathrm{mod}W,$ $y^{\&prime;}=(n\_\mathrm{white}+y-\frac{H}{2})\mathrm{mod}H;$

After unrolling according to method shown in Figure 8, M _WhiteWith F _WhiteCorresponding matrix element addition, concrete grammar is: M _White[x ', y ']=M _White[x ', y ']+F _White[x, y], thereby, in circulation for the first time, when pixel [4,6] dyed white after, dye white probability matrix M after being upgraded once more _WhiteShown in Fig. 8 c.

210, threshold value Threshold is specially from adding 1: Threshold=Threshold+1, thereby, after the loop ends first time, Threshold=2.

211, judging that whether also having element in the described dyeing matrix B is 0, is 0 if also have element in the described dyeing matrix B, shows that then pixel is not colored in addition; If not having element in the described dyeing matrix B is 0, then all pixels all are colored;

When also having element to be 0 in the described dyeing matrix B, repeated execution of steps 204-210, until all pixels all dyed white or dye black, that is: for all x ∈ [1, W], y ∈ [1, H] works as B[x, y]=-1 or B[x, y]=1 o'clock, loop ends obtains final threshold matrix T as shown in figure 10.

Embodiment of the invention FMAM network control method, at first generate first electric-wave filter matrix and second electric-wave filter matrix, and initialization dyeing matrix, threshold matrix, threshold value, dye black probability matrix and dye white probability matrix, according to described dyeing matrix, dye the black probability matrix and first electric-wave filter matrix, selection waits to dye black pixel, polish described pixel black, according to described through the dyeing matrix after once upgrading, dye the white probability matrix and second electric-wave filter matrix, selection waits to dye white pixel, polish described pixel white, and repeat above-mentioned dyeing course, all be colored until all pixels.Compared with prior art, the present invention has adopted double filter mechanism, and threshold matrix is divided into two sections of front and back, adopts different filters respectively, make the amplitude modulation characteristic of high light part and shadow frequency-modulation halftone dot partly distinguish to some extent, thereby can satisfy the demand of different output equipments.

Embodiment three

Present embodiment provides a kind of FMAM network control method, and the implementation procedure of described FMAM network control method specifically can be with reference to embodiment two; Different with embodiment two is, in the present embodiment, and threshold matrix width W=64, threshold matrix height H=64.Obtain final threshold matrix shown in Figure 11 a, the method for expressing of the image conversion that described threshold matrix adopts, in described threshold matrix, the place that gray scale is dark more, element value is more little, the place that gray scale is shallow more, element value is big more.

Correspondingly, gray value be 20 two values matrix shown in Figure 11 b, gray value is that 235 two values matrix is shown in Figure 11 c;

Wherein, described gray value is that the acquisition methods of 20 two values matrix is: for each element in the threshold matrix, if this element greater than 20, then exports 255, otherwise export 0;

Equally, described gray value is that the acquisition methods of 235 two values matrix is: for each element in the threshold matrix, if this element greater than 235, then exports 255, otherwise export 0.

By Figure 11 a, Figure 11 b and Figure 11 c as can be seen, the size of highlight area and amplitude modulation site, shadow zone is obviously different, can satisfy actual output demand.

Embodiment four

Present embodiment provides a kind of FMAM network control system device, and as shown in figure 12, described FMAM network control system device comprises:

Generation module 121 is used to generate first electric-wave filter matrix and second electric-wave filter matrix;

Initialization module 122 is used for initialization dyeing matrix, threshold matrix, dyes black probability matrix and dyes white probability matrix;

Dye black module 123, be used for according to described dyeing matrix, dye the black probability matrix and first electric-wave filter matrix, select to wait to dye black pixel, polish described pixel black;

Dye white module 124, be used for according to described through the dyeing matrix after once upgrading, dye the white probability matrix and second electric-wave filter matrix, select to wait to dye white pixel, polish described pixel white;

Judge module 125 is used to judge whether all pixels all are colored;

Particularly, described judge module 125 judges that whether also having element in the described dyeing matrix is 0, is 0 if also have element in the described dyeing matrix, shows that then pixel is not colored in addition; If not having element in the described dyeing matrix is 0, then all pixels all are colored; When also having element to be 0 in the described dyeing matrix B, dye black module 123 and select to wait to dye black pixel by described, described pixel is polished black, and dye white module 124 and select to wait to dye white pixel by described, polish described pixel white.

Embodiment of the invention FMAM network control system device, at first generate first electric-wave filter matrix and second electric-wave filter matrix, and initialization dyeing matrix, threshold matrix, threshold value, dye black probability matrix and dye white probability matrix, according to described dyeing matrix, dye the black probability matrix and first electric-wave filter matrix, selection waits to dye black pixel, polish described pixel black, according to described through the dyeing matrix after once upgrading, dye the white probability matrix and second electric-wave filter matrix, selection waits to dye white pixel, polish described pixel white, and repeat above-mentioned dyeing course, all be colored until all pixels.Compared with prior art, the present invention has adopted double filter mechanism, and threshold matrix is divided into two sections of front and back, adopts different filters respectively, make the amplitude modulation characteristic of high light part and shadow frequency-modulation halftone dot partly distinguish to some extent, thereby can satisfy the demand of different output equipments.

Embodiment five

As shown in figure 13, described FMAM network control system device comprises:

Generation module 131 is used to generate first electric-wave filter matrix and second electric-wave filter matrix;

Initialization module 132 is used for initialization dyeing matrix, threshold matrix, dyes black probability matrix and dyes white probability matrix;

Dye black module 133, be used for according to described dyeing matrix, dye the black probability matrix and first electric-wave filter matrix, select to wait to dye black pixel, polish described pixel black;

Dye white module 134, be used for according to described through the dyeing matrix after once upgrading, dye the white probability matrix and second electric-wave filter matrix, select to wait to dye white pixel, polish described pixel white;

Judge module 135 is used to judge whether all pixels all are colored;

Particularly, described judge module 135 judges that whether also having element in the described dyeing matrix is 0, is 0 if also have element in the described dyeing matrix, shows that then pixel is not colored in addition; If not having element in the described dyeing matrix is 0, then all pixels all are colored; When also having element to be 0 in the described dyeing matrix B, dye black module 133 and select to wait to dye black pixel by described, described pixel is polished black, and dye white module 134 and select to wait to dye white pixel by described, polish described pixel white.

Wherein, described initialization module 132 comprises:

First initialization unit 1321 is used for the element of dyeing matrix B all is set to 0, and wherein, element is that 0 remarked pixel is in the state of being unstained in the described dyeing matrix B;

Second initialization unit 1322 is used for all elements of threshold matrix T all is set to 0;

The 3rd initialization unit 1323 is used for threshold value Threshold and is set to 1;

The 4th initialization unit 1324 is used for and will dyes black probability matrix M _BlackIn all elements all be changed to 0.0;

The 5th initialization unit 1325 is used for and will dyes white probability matrix M _WhiteIn all elements all be changed to 0.0.

Wherein, describedly dye black module 133 and comprise:

First selected cell 1331 is used for deceiving probability matrix M according to described dyeing matrix B with dying _Black, select to be unstained and to dye the pixel of black probability minimum;

Dye black unit 1332, be used for described pixel is polished black, obtain through dyeing matrix B and threshold matrix T after once upgrading;

First acquiring unit 1333 is used for deceiving probability matrix M according to described dying _BlackWith the first electric-wave filter matrix F _Black, obtain through the black probability matrix M that dyes after once upgrading _Black

Wherein, describedly dye white module 134 and comprise:

Second selected cell 1341 is used for according to described through the dyeing matrix B after once upgrading with dye white probability matrix M _White, select to be unstained and to dye the pixel of white probability minimum;

Dye white unit 1342, be used for described pixel is polished white, obtain through dyeing matrix B and threshold matrix T after upgrading once more;

Second acquisition unit 1343 is used for dying white probability matrix M according to described _WhiteWith the second electric-wave filter matrix F _White, obtain through the white probability matrix M that dyes after upgrading once more _White

Threshold value is used for described threshold value Threshold from adding 1 from adding unit 1344.

Embodiment of the invention FMAM network control system device, at first generate first electric-wave filter matrix and second electric-wave filter matrix, and initialization dyeing matrix, threshold matrix, threshold value, dye black probability matrix and dye white probability matrix, according to described dyeing matrix, dye the black probability matrix and first electric-wave filter matrix, selection waits to dye black pixel, polish described pixel black, according to described through the dyeing matrix after once upgrading, dye the white probability matrix and second electric-wave filter matrix, selection waits to dye white pixel, polish described pixel white, and repeat above-mentioned dyeing course, all be colored until all pixels.Compared with prior art, the present invention has adopted double filter mechanism, and threshold matrix is divided into two sections of front and back, adopts different filters respectively, make the amplitude modulation characteristic of high light part and shadow frequency-modulation halftone dot partly distinguish to some extent, thereby can satisfy the demand of different output equipments.

The above-mentioned method embodiment that provides can be provided the FMAM network control system device that the embodiment of the invention provides.FMAM network control method that the embodiment of the invention provides and device go for printer and high-grade plate making equipment, but are not limited only to this.

One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.

The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (10)

1. a FMAM network control method is characterized in that, comprising:

Generate first electric-wave filter matrix and second electric-wave filter matrix;

Initialization dyeing matrix, threshold matrix, threshold value, dye black probability matrix and dye white probability matrix;

According to described dyeing matrix, dye the black probability matrix and first electric-wave filter matrix, select to wait to dye black pixel, polish described pixel black;

According to described through the dyeing matrix after once upgrading, dye the white probability matrix and second electric-wave filter matrix, select to wait to dye white pixel, polish described pixel white;

Judge whether all pixels all are colored,, then repeat above-mentioned step pixel dyeing if also have pixel not to be colored.

2. FMAM network control method according to claim 1 is characterized in that, the described first electric-wave filter matrix F _BlackBe electric-wave filter matrix by following formula generting element:

$F_{\mathrm{black}}[x,y]=f_1\left(\sqrt{{(x-\frac{W}{2})}^2+{(y-\frac{H}{2})}^2}\right)$

The described second electric-wave filter matrix F _WhiteBe electric-wave filter matrix by following formula generting element:

$F_{\mathrm{white}}[x,y]=f_2\left(\sqrt{{(x-\frac{W}{2})}^2+{(y-\frac{H}{2})}^2}\right)$

Wherein, $f_1\left(t\right)=\left\{\begin{array}{c}{d}_{11},t\&le;p_{11}\\ d_{12},p_{11}<t\&le;p_{12}\\ ...\\ \frac{1}{t^2},t>p_{1n}\end{array}\right.,$ $f_2\left(t\right)=\left\{\begin{array}{c}{d}_{21},t\&le;p_{21}\\ d_{22},p_{21}<t\&le;p_{22}\\ ...\\ \frac{1}{t^2},t>p_{2n}\end{array}\right.;$ X ∈ [1, W], y ∈ [1, H]; W is the threshold matrix width, and H is the threshold matrix height; d ₁₁, d ₁₂, p ₁₁, p ₁₂, p _1nWith d ₂₁, d ₂₂, p ₂₁, p ₂₂, p _2nBe variable coefficient.

3. FMAM network control method according to claim 2 is characterized in that, described initialization dyeing matrix, threshold matrix, dyes black probability matrix and dyes white probability matrix and comprise:

Element in the dyeing matrix B all is set to 0, and wherein, element is that 0 remarked pixel is in the state of being unstained in the described dyeing matrix B;

All elements among the threshold matrix T all is set to 0;

Threshold value Threshold is set to 1;

To dye black probability matrix M _BlackIn all elements all be changed to 0.0;

To dye white probability matrix M _WhiteIn all elements all be changed to 0.0.

4. FMAM network control method according to claim 3 is characterized in that, described according to described dyeing matrix, dye the black probability matrix and first electric-wave filter matrix, select to wait to dye black pixel, described pixel is polished black-envelope draws together:

Deceive probability matrix M according to described dyeing matrix B with dying _Black, select to be unstained and to dye the pixel of black probability minimum;

Described pixel is polished black, obtain through dyeing matrix B and threshold matrix T after once upgrading;

Deceive probability matrix M according to described dying _BlackWith the first electric-wave filter matrix F _Black, obtain through the black probability matrix M that dyes after once upgrading _Black

5. FMAM network control method according to claim 4 is characterized in that, described according to described through the dyeing matrix after once upgrading, dye the white probability matrix and second electric-wave filter matrix, select to wait to dye white pixel, described pixel is polished white comprising:

According to described through the dyeing matrix B after once upgrading with dye white probability matrix M _White, select to be unstained and to dye the pixel of white probability minimum;

Described pixel is polished white, obtain through dyeing matrix B and threshold matrix T after upgrading once more;

Dye white probability matrix M according to described _WhiteWith the second electric-wave filter matrix F _White, obtain through the white probability matrix M that dyes after upgrading once more _White

Described threshold value Threshold is added 1 certainly.

6. FMAM network control method according to claim 5 is characterized in that, describedly judges whether all pixels all are colored and comprises:

Judge that whether also having element in the described dyeing matrix B is 0;

If also having element in the described dyeing matrix B is 0, then also have pixel not to be colored;

If not having element in the described dyeing matrix B is 0, then all pixels all are colored.

7. a FMAM network control system device is characterized in that, comprising:

Generation module is used to generate first electric-wave filter matrix and second electric-wave filter matrix;

Initialization module is used for initialization dyeing matrix, threshold matrix, dyes black probability matrix and dyes white probability matrix;

Dye black module, be used for according to described dyeing matrix, dye the black probability matrix and first electric-wave filter matrix, select to wait to dye black pixel, polish described pixel black;

Dye white module, be used for according to described through the dyeing matrix after once upgrading, dye the white probability matrix and second electric-wave filter matrix, select to wait to dye white pixel, polish described pixel white;

Judge module is used to judge whether all pixels all are colored.

8. FMAM network control system device according to claim 7 is characterized in that described initialization module comprises:

First initialization unit is used for the element of dyeing matrix B all is set to 0, and wherein, element is that 0 remarked pixel is in the state of being unstained in the described dyeing matrix B;

Second initialization unit is used for all elements of threshold matrix T all is set to 0;

The 3rd initialization unit is used for threshold value Threshold and is set to 1;

The 4th initialization unit is used for and will dyes black probability matrix M _BlackIn all elements all be changed to 0.0;

The 5th initialization unit is used for and will dyes white probability matrix M _WhiteIn all elements all be changed to 0.0.

9. FMAM network control system device according to claim 8 is characterized in that, describedly dyes black module and comprises:

First selected cell is used for deceiving probability matrix M according to described dyeing matrix B with dying _Balck, select to be unstained and to dye the pixel of black probability minimum;

Dye black unit, be used for described pixel is polished black, obtain through dyeing matrix B and threshold matrix T after once upgrading;

First acquiring unit is used for deceiving probability matrix M according to described dying _BlackWith the first electric-wave filter matrix F _Black, obtain through the black probability matrix M that dyes after once upgrading _Black

10. FMAM network control system device according to claim 9 is characterized in that, describedly dyes white module and comprises:

Second selected cell is used for according to described through the dyeing matrix B after once upgrading with dye white probability matrix M _White, select to be unstained and to dye the pixel of white probability minimum;

Dye white unit, be used for described pixel is polished white, obtain through dyeing matrix B and threshold matrix T after upgrading once more;

Second acquisition unit is used for dying white probability matrix M according to described _WhiteWith the second electric-wave filter matrix F _White, obtain through the white probability matrix M that dyes after upgrading once more _White

Threshold value is used for described threshold value Threshold from adding 1 from adding the unit.

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