CN103186648B - A kind of method and device of page graphic primitive overlap process - Google Patents

Abstract

The present invention relates to digital printing art technology, particularly relate to the method and device of page graphic primitive overlap process, including: according to the attribute information of original graph meta objects all in the original description of the page, determine all crossing original graph meta objects；Isolating the intersection often organizing crossing original graph meta object, each graphics primitive object after separating, as independent current graphics primitive object, generates the attribute information including routing information of current graphics primitive object；For often organizing crossing original graph meta object, double exposure attribute information and colouring information according to crossing original graph meta object carry out overlap process, determine the colouring information of current graphics primitive object, and are added in attribute information by colouring information；Attribute information according to current graphics primitive object and the attribute information of disjoint original graph meta object, generate the current description of the page.The method and device of the page graphic primitive overlap process of embodiment of the present invention offer is provided, graphics primitive object overlap process can be completed in page-describing rank.

Description

Method and device for overprinting processing of graphic elements on a page

technical field

The invention relates to the technology in the field of digital printing, in particular to a method and a device for overprinting processing of page graphic elements.

Background technique

Traditional primitive object overprint processing is generally implemented in a rasterizer. In this processing mode, the final overprint effect on the page is related to the rasterization parameters set by the user, and also related to the behavior of the rasterizer itself. In this way, a lot of uncertainty is brought to the final overprinting result.

This kind of uncertainty generally manifests itself as: the results of rasterization of the same page in different rasterizers are different; The results were different. At the same time, when the overprinting process is performed in the rasterizer, due to the high output resolution and the huge rasterized dot matrix data, the efficiency of the entire overprinting process will also be affected to a certain extent.

Contents of the invention

Embodiments of the present invention provide a method and device for overprinting processing of graphic elements on a page, which can complete overprinting processing of graphic element objects at the page description level, reduce the complexity of overprinting processing, and improve overprinting without changing the visual effect. processing efficiency.

An embodiment of the present invention provides a method for overprinting processing of page graphic elements, including:

Determine all intersecting original primitive objects according to the attribute information of all original primitive objects in the original description of the page, the attribute information includes path information, overprint attribute information and color information;

Separating the intersecting parts of each group of intersecting original primitive objects, using each separated primitive object as an independent current primitive object, generating attribute information including path information of the current primitive object;

For each group of intersecting original primitive objects, perform overprint processing according to the overprint attribute information and color information of the intersecting original primitive objects, determine the color information of the current primitive object, and add the color information to the attribute information;

The current description of the page is generated according to the attribute information of the current primitive object and the attribute information of disjoint original primitive objects.

Correspondingly, an embodiment of the present invention provides an apparatus for overprinting processing of page graphic elements, including:

An intersection determination module, configured to determine all intersecting original primitive objects according to the attribute information of all original primitive objects in the original description of the page, the attribute information including path information, overprint attribute information and color information;

The separation module is used to separate the intersecting parts of each group of intersecting original primitive objects, use each separated primitive object as an independent current primitive object, and generate attribute information including path information of the current primitive object ;

The overprint processing module is configured to perform overprint processing for each group of intersecting original primitive objects according to the overprint attribute information and color information of the intersected original primitive objects, determine the color information of the current primitive object and Color information is added to attribute information;

A generating module, configured to generate the current description of the page according to the attribute information of the current primitive object and the attribute information of disjoint original primitive objects.

Embodiments of the present invention provide a method and device for overprinting processing of page primitives, which are used to determine all intersecting original primitive objects according to the attribute information of all original primitive objects in the original description of the page, and the attribute information includes path information , overprint attribute information and color information; separate the intersecting parts of each group of intersecting original primitive objects, use each separated primitive object as an independent current primitive object, and generate the path information of the current primitive object attribute information; for each group of intersecting original primitive objects, overprint processing is performed according to the overprint attribute information and color information of the intersecting original primitive objects, the color information of the current primitive object is determined, and the color The information is added to the attribute information; and the current description of the page is generated according to the attribute information of the current primitive object and the attribute information of the disjoint original primitive object. Using the method and device for overprinting processing of page primitives provided by the embodiments of the present invention, by splitting the intersecting primitive objects into multiple independent primitive objects, and calculating the color information of the intersecting parts, modifying the color information of each primitive object accordingly Attribute information (related description), generate a new page description. In this way, the overprint processing of the primitive object can be completed at the page description level, and the complexity of the overprint processing can be reduced without changing the visual effect, and the overprint efficiency can be improved.

Description of drawings

FIG. 1 is a schematic flowchart of a method for overprinting processing of page graphic elements in an embodiment of the present invention;

Fig. 2a and Fig. 2b are the structural diagrams of the separation of the original graphic elements in the embodiment of the present invention;

FIG. 3 is a schematic flowchart of a method for overprinting processing of page graphics elements in another embodiment of the present invention;

FIG. 4 is a schematic diagram of an apparatus for overprinting processing of page graphic elements in an embodiment of the present invention.

detailed description

The main realization principles, specific implementation modes and corresponding beneficial effects of the technical solutions of the embodiments of the present invention will be described in detail below in conjunction with each accompanying drawing.

In order to solve the problems existing in the prior art, an embodiment of the present invention provides a method for overprinting a page graphic element, as shown in FIG. 1 , including the following steps:

Step 101, according to the attribute information of all original primitive objects in the original description of the page, determine all intersecting original primitive objects, the attribute information includes path information, overprint attribute information and color information;

Step 102, separating the intersecting parts of each group of intersecting original primitive objects, using each separated primitive object as an independent current primitive object, and generating attribute information including path information of the current primitive object;

Step 103, for each group of intersecting original primitive objects, perform overprint processing according to the overprint attribute information and color information of the intersecting original primitive objects, determine the color information of the current primitive object, and add the color information to the attribute information;

Step 104: Generate the current description of the page according to the attribute information of the current primitive object and the attribute information of the disjoint original primitive object.

Specifically, the original description of the page is analyzed, the attribute information of all original primitive objects in the page is obtained, and the attribute information of all primitive objects is stored according to the sequence in which the primitive objects are described in the page description. The attribute information of the original primitive object includes: path information, overprint attribute information and color information, and also includes: primitive object type, clipping information of the primitive object; wherein the color information includes: color space and color value.

Then, obtain the path information in the attribute information of all original primitive objects; when the distance between the paths represented by the two path information is less than a predetermined threshold, determine that the positional relationship of the original primitive objects corresponding to the two path information is intersection . Since the path information of the primitive object is described and recorded in the form of vector, it is possible to use the correlation algorithm of vector to judge whether two paths intersect. In general, the positional relationship of primitive objects includes three situations: separation, adjacent non-intersecting and intersecting. For the adjacent non-intersecting situation, the path can be adjusted to be separated or intersected according to the actual situation.

Perform intersection processing on the path information of each group of intersecting original primitive objects, separate the intersecting part of the intersecting original primitive objects, and use the remaining original primitive objects after separation as independent current primitive objects, and Generate respective attribute information including path information for each current primitive object. As shown in Figure 2a, the intersecting original primitive objects are: a circle and a regular hexagon; as shown in Figure 2b, after the intersection processing, the two intersecting original primitive objects are separated into non-intersecting each other The three current primitive objects. At the same time, after the intersection processing, the attribute information of each current primitive object is generated, wherein the modified original primitive object is used as the current primitive object, and the path information in its attribute information is modified; the intersected original primitive object The intersection part of is used as the current primitive object, and its attribute information is the newly generated attribute information, including path information, overprint attribute information, primitive object type, primitive object clipping information, etc.

The color information of the intersecting part is determined by the attribute information of the intersecting original primitive object, so it is necessary to determine the color rendering method of the intersecting part according to the overprint attribute information of the intersecting original primitive object; according to the rendering method, the intersecting original primitive object is presented The color of an original primitive object, or calculate the color of the intersected part according to the color information of the intersected original primitive object, as the color information of the intersected part; then, add the color information of the intersected part to the corresponding current graph In the attribute information of the meta object. For example, assuming that two original primitive objects intersect, one of which is a white primitive object and the other is a black primitive object, then when the overprint property of the white primitive object is always on top, the The color of the intersecting part is white; if the overprint attribute of the two original primitive objects is on the same layer, calculate the color value of the mixed color of the two primitive objects, such as gray. For the specific method of calculating the color value, reference may be made to some methods in the prior art, which is not the focus of the present invention.

After the attribute information of the current primitive object corresponding to the intersection part is complete, the attribute information of the current primitive object corresponding to the intersection part of the intersected original primitive object is stored after the attribute information of the intersected original primitive object. As shown in Figure 2b, the genus information of the intersecting part in the middle should be stored behind the modified circular primitive object and the modified regular hexagonal primitive object, such as the attribute information storage next to the original primitive object, or It has attribute information of other primitive objects between the original primitive object. Preferably, the current primitive object corresponding to the intersection part is stored after all original primitive objects. For example, assuming that the attribute information of primitive object 1 to primitive object 6 is stored sequentially, and that primitive object 1 and primitive object 3 intersect, then after overprinting processing, modify the attribute information of primitive object 1 and primitive object 3, And the attribute information of the current primitive object 7 generated by the intersection of the primitive object 1 and the primitive object 3 is stored behind the attribute information of the primitive object 6, or the attribute information of the current primitive object 7 can also be inserted and stored in Behind the attribute information of primitive object 3.

Finally, the current description of the page is generated according to the attribute information of the current primitive object and the disjoint attribute information of the original primitive object.

From the above description, it can be seen that using the method for overprinting processing of page primitives provided by the embodiment of the present invention, by splitting the intersecting primitive objects into multiple independent primitive objects, and calculating the color information of the intersecting parts, corresponding Modify the attribute information (related description) of each primitive object to generate a new page description. In this way, the overprint processing of the primitive object can be completed at the page description level, and the complexity of the overprint processing can be reduced and the efficiency of the overprint processing can be improved without changing the visual effect.

The method for overprinting processing of page graphic elements provided by the embodiment of the present invention will be described in detail below through specific embodiments, as shown in FIG. 3 , including the following steps:

Step 301, analyze the original description of the page, and obtain the attribute information of all original primitive objects in the page; the attribute information of the original primitive object includes: path information, overprint attribute information and color information, and also includes: primitive object type, graph The clipping information of the meta object; the color information includes: color space and color value.

Step 302, storing attribute information of all primitive objects according to the order in which the primitive objects are described in the page description;

Step 303: Obtain the path information in the attribute information of all original primitive objects, and determine the intersecting original primitive objects; specifically, when the distance between the paths indicated by the two path information is less than a predetermined threshold, determine the two paths The positional relationship of the original primitive objects corresponding to the information is intersection.

Step 304, performing intersection processing on the path information of each group of intersecting original primitive objects, and separating the intersecting parts of the intersecting original primitive objects;

Step 305, taking the intersecting part and the remaining original primitive objects after separation as independent current primitive objects, and generating attribute information of each current primitive object; wherein, the attribute information of the current primitive object corresponding to the intersection part Include path information, but not color information.

Step 306, according to the overprint attribute information and color information of the intersecting original primitive object, determine the color information of the current primitive corresponding to the intersection part and add it to the attribute information;

Step 307, storing the attribute information of the current primitive object corresponding to the intersection part after the attribute information of the intersected original primitive object;

Step 308: Generate the current description of the page according to the attribute information of the current primitive object and the attribute information of the disjoint original primitive object.

From the above description, it can be seen that using the method for overprinting processing of page primitives provided by the embodiment of the present invention, by splitting the intersecting primitive objects into multiple independent primitive objects, and calculating the color information of the intersecting parts, corresponding Modify the attribute information (related description) of each primitive object to generate a new page description. In this way, the overprint processing of the primitive object can be completed at the page description level, and the complexity of the overprint processing can be reduced and the efficiency of the overprint processing can be improved without changing the visual effect.

Based on the same inventive concept, an embodiment of the present invention also provides an apparatus for overprinting processing of page graphic elements, as shown in FIG. 4 , including:

The intersection determination module 401 is configured to determine all intersecting original primitive objects according to the attribute information of all original primitive objects in the original description of the page, and the attribute information includes path information, overprint attribute information and color information;

The separation module 402 is used to separate the intersecting parts of each group of intersecting original primitive objects, use each separated primitive object as an independent current primitive object, and generate the attributes of the current primitive object including path information information;

The overprint processing module 403 is configured to, for each group of intersecting original primitive objects, perform overprint processing according to the overprint attribute information and color information of the intersecting original primitive objects, determine the color information of the current primitive object, and The color information is added to the attribute information;

The generation module 404 is configured to generate the current description of the page according to the attribute information of the current primitive object and the attribute information of disjoint original primitive objects.

Preferably, the device also includes:

Obtaining module 405, configured to analyze the original description of the page, and acquire attribute information of all original primitive objects in the page;

The storage module 406 is configured to store the attribute information of all the primitive objects according to the sequence in which the primitive objects are described in the page description.

Preferably, the storage module 406 is further configured to store the attribute information of the current primitive object corresponding to the intersection part of the intersecting original primitive object after the attribute information of the intersecting original primitive object.

Preferably, the intersection determining module 401 is specifically configured to obtain path information in the attribute information of all original primitive objects; when the distance between two paths represented by the path information is less than a predetermined threshold, determine the The positional relationship of the original primitive objects respectively corresponding to the two path information is intersection.

Preferably, the separation module 402 is specifically configured to perform intersection processing on the path information of each group of intersected original primitive objects, separate the intersecting parts of the intersected original primitive objects, and separate The remaining original primitive objects are respectively regarded as independent current primitive objects, and respective attribute information including path information of each current primitive object is generated.

Preferably, the overprint processing module 403 is configured to determine the color presentation mode of the intersecting part according to the overprint attribute information of the intersecting original graphic object; and present one of the intersecting original graphic object according to the presentation mode. The color of the original primitive object, or calculate the color of the intersecting part according to the color information of the original primitive object of the intersection, as the color information of the intersecting part; the color information of the original primitive object and the color of the intersecting part Information, added to the attribute information of the corresponding current primitive object.

From the above description, it can be seen that using the method and device for overprinting processing of page primitives provided by the embodiments of the present invention, the intersecting primitive objects are divided into multiple independent primitive objects, and the color information of the intersecting parts is calculated , correspondingly modify the attribute information (related description) of each primitive object, and generate a new page description. In this way, the overprint processing of the primitive object can be completed at the page description level, and the complexity of the overprint processing can be reduced and the efficiency of the overprint processing can be improved without changing the visual effect.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

While preferred embodiments of the invention have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be construed to cover the preferred embodiment as well as all changes and modifications which fall within the scope of the invention.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies thereof, the present invention also intends to include these modifications and variations.

Claims (10)

1. the method for a page graphic primitive overlap process, it is characterised in that the method includes:

According to the attribute information of original graph meta objects all in the original description of the page, determine all crossing Original graph meta object, described attribute information includes routing information, double exposure attribute information and colouring information；

Carry out asking friendship to process by the routing information often organizing described crossing original graph meta object, by described crossing The intersection of original graph meta object is separated, and with separate after remaining original graph meta object respectively as Independent current graphics primitive object, and generate the respective attribute letter including routing information of each current graphics primitive object Breath；

For often organizing crossing original graph meta object, according to the double exposure attribute of described crossing original graph meta object Information and colouring information carry out overlap process, determine the colouring information of described current graphics primitive object, and by described Colouring information adds in attribute information；

Attribute information according to described current graphics primitive object and the attribute information of disjoint original graph meta object, Generate the current description of the described page.

2. the method for claim 1, it is characterised in that the attribute letter of described original graph meta object Breath includes: routing information, double exposure attribute information and colouring information, also includes: graphics primitive object type, pel The prune message of object；

Wherein said colouring information includes: the colour space and color value.

3. the method for claim 1, it is characterised in that described according in the original description of the page The attribute information of all original graph meta objects, before determining all crossing original graph meta objects, also includes:

Analyze the original description of the page, obtain the attribute information of all original graph meta objects in the described page；

The order of graphics primitive object described in original description according to the described page, stores described all original pels The attribute information of object；

The described colouring information determining described current graphics primitive object, and described colouring information is added to attribute letter After in breath, also include:

By the attribute information of current graphics primitive object corresponding for the intersection of described crossing original graph meta object, After being stored in the attribute information of described crossing original graph meta object.

4. the method for claim 1, it is characterised in that according to all in the original description of the page The attribute information of original graph meta object, determines all crossing original graph meta objects, including:

Obtain the routing information in the attribute information of all original graph meta objects；

When distance between the path that two described routing informations represent is less than predetermined threshold, determine described two The position relationship of the original graph meta object that individual described routing information is the most corresponding is crossing.

5. the method for claim 1, it is characterised in that according to described crossing original pel pair The double exposure attribute information of elephant and colouring information carry out overlap process, determine the color letter of described current graphics primitive object Described colouring information is also added in attribute information by breath, including:

According to the double exposure attribute information of described crossing original graph meta object, determine that the color of intersection presents Mode；

According to presentation mode, present the face of an original graph meta object in described crossing original graph meta object Color, or the colouring information according to described crossing original graph meta object, calculate the color of intersection, Colouring information as intersection；

By the colouring information of described intersection, add in the attribute information of corresponding current graphics primitive object.

6. the device of a page graphic primitive overlap process, it is characterised in that including:

Intersect and determine module, believe for the attribute according to original graph meta objects all in the original description of the page Breath, determines all crossing original graph meta objects, and described attribute information includes routing information, double exposure attribute Information and colouring information；

Separation module, for carrying out asking at friendship by the routing information often organizing described crossing original graph meta object Reason, separates the intersection of described crossing original graph meta object, and rear remaining original with separating Graphics primitive object is respectively as independent current graphics primitive object, and generates that each current graphics primitive object is respective to be included The attribute information of routing information；

Overlap process module, for for often organizing crossing original graph meta object, according to described crossing original The double exposure attribute information of graphics primitive object and colouring information carry out overlap process, determine described current graphics primitive object Colouring information, and described colouring information is added in attribute information；

Generation module, for the attribute information according to described current graphics primitive object and disjoint original pel pair The attribute information of elephant, generates the current description of the described page.

7. device as claimed in claim 6, it is characterised in that also include:

Acquisition module, for analyzing the original description of the page, obtains all original graph meta objects in the described page Attribute information；

Memory module, the order of graphics primitive object, stores institute described in the original description according to the described page State the attribute information of all original graph meta objects.

8. device as claimed in claim 7, it is characterised in that described memory module, is additionally operable to institute State the attribute information of current graphics primitive object corresponding to the intersection of crossing original graph meta object, be stored in institute After stating the attribute information of crossing original graph meta object.

9. device as claimed in claim 6, it is characterised in that described intersecting determines module, specifically uses Routing information in the attribute information obtaining all original graph meta objects；When two described routing informations represent Path between distance less than predetermined threshold time, determine the most corresponding former of routing information described in said two The position relationship of beginning graphics primitive object is crossing.

10. device as claimed in claim 6, it is characterised in that described overlap process module, for root According to the double exposure attribute information of described crossing original graph meta object, determine the mode of appearance of color of intersection； According to presentation mode, present the color of an original graph meta object in described crossing original graph meta object, or Person, according to the colouring information of described crossing original graph meta object, calculates the color of intersection, as phase Hand over the colouring information of part；By colouring information and the colouring information of intersection of described original graph meta object, Add in the attribute information of corresponding current graphics primitive object.