CN101364204B - Method and device for positioning error code of grating image processor - Google Patents
Method and device for positioning error code of grating image processor Download PDFInfo
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- CN101364204B CN101364204B CN2008102232915A CN200810223291A CN101364204B CN 101364204 B CN101364204 B CN 101364204B CN 2008102232915 A CN2008102232915 A CN 2008102232915A CN 200810223291 A CN200810223291 A CN 200810223291A CN 101364204 B CN101364204 B CN 101364204B
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Abstract
The invention relates to the technical field of image processing, and discloses a method for positioning error codes of a raster image processor. The method comprises the steps of carrying out first rasterization processing to primitives in a page in sequence; recording attribute information of the primitives, to which the first rasterization processing is carried out in every ordinal position; carrying out second rasterization processing to the primitives in the page in sequence; and outputting first error code information if attribute information of the current primitives after the second rasterization processing and the attribute information of the primitives recorded in the same ordinal position are different after comparison. The invention further discloses a device for positioning the error codes of the raster image processor. By adopting the device, BUG codes appearing in RIP can be positioned quickly and accurately.
Description
Technical field
The present invention relates to technical field of image processing, relate in particular to a kind of error code of grating image processor localization method and device.
Background technology
Grating image processor (RIP, Raster Image Processor) is a kind of interpreter, and being used for the described layout information explanation of page-description language is converted to can be for the data message (generally being bitmap) of output device output.RIP is the kernel software of whole pre-printing industry, and the output quality of a desktop system, output speed and opening are the quality that depends on RIP to a great extent.
Bitmap (bitmap) also is called dot chart, grid image or pixel map, briefly, be exactly least unit be the figure of pixel, convergent-divergent can distortion.The least unit that constitutes bitmap is a pixel, each pixel has the colouring information of oneself, as form and aspect, saturation degree, lightness, bitmap is realized its display effect by the arrangement of pel array, when bitmap images is carried out editing operation, exercisable to liking each pixel, can change the display effect of bitmap by changing form and aspect, saturation degree, the lightness of pixel.
The process of the page being carried out rasterization process can simply be described as from the aspect that internal memory changes: open up an internal memory, after the initialization as the storage space of page dot matrix space, the some bytes in the corresponding internal memory of each pixel in the page dot matrix space.The each drafting after the operation, owing to newly drawn pel, so the pixel in the page dot matrix space can change, corresponding internal storage data also can change.Draw after operation finishes at all, the content in this internal memory is carries out result after the rasterization process to this page.
Message-Digest Algorithm 5 (MD5, Message-digest Algorithm 5), through MD2, MD3 and MD4 development, MD5 is an information of handling input with 512 groupings, and each grouping is divided into 16 32 seat groupings again, after having passed through a series of processing, the output of algorithm is formed by four 32, will will generate 128 hashed values after these four 32 packet concatenation.It is that a segment information (Message) is produced informative abstract (Message-Digest) that the typical case of MD5 uses, the informative abstract that produces has uniqueness, if the informative abstract of two segment informations is identical, then this two segment information is also identical, if the informative abstract difference of two segment informations, then this two segment information is also different.
Because the output result of RIP will be seen in the paper end mostly, its correctness is most important.The wrong presentation that BUG caused in the general procedure can be stablized reproduction, is easy to verification.But no initializtion in the program, or visit crosses the border and wait BUG, wrong presentation might not occur in a very long time, or wrong presentation is not obvious, but in case wrong presentation obvious after, may cause comparatively serious consequence.Because instability and not clear dominance that wrong presentation is reproduced, and because at present can only be by developer's bitmap that detects by an unaided eye, locate the RIP error code, though therefore the developer has paid the plenty of time, but still some BUG is that the developer can't with the naked eye find unavoidably.
Summary of the invention
The embodiment of the invention provides a kind of error code of grating image processor localization method, goes out the code that occurs BUG among the RIP in order to rapid accurate in locating.
Correspondingly, the embodiment of the invention also provides a kind of error code of grating image processor locating device.
A kind of error code of grating image processor localization method comprises:
Empty the storage space of the bitmap summary sign indicating number that is used for record diagram meta-attribute information and pel correspondence;
Successively pel in the page is carried out the rasterization process first time;
Write down each ordinal position place and carry out the attribute information of the pel of rasterization process for the first time;
Successively pel in the described page is carried out the rasterization process second time, if it is different with the attribute information of the same ordinal position place pel of described record to compare the current attribute information that has passed through the pel of rasterization process for the second time, then export the first error code information.
A kind of error code of grating image processor locating device comprises:
Empty the unit, be used in first rasterization unit emptying the storage space of the bitmap summary sign indicating number that is used for record diagram meta-attribute information and pel correspondence before pel carries out the rasterization process first time in successively to the page;
First rasterization unit is used for successively pel in the page being carried out the rasterization process first time;
First record cell is used to write down each ordinal position place and carries out the attribute information of the pel of rasterization process for the first time;
Second rasterization unit is used for once pel in the page being carried out the rasterization process second time;
First positioning unit is used for if compare the current attribute information that has passed through the pel of rasterization process for the second time differently with the attribute information of the same ordinal position place pel of described record, then exports the first error code information.
The error code of grating image processor localization method that the embodiment of the invention provides, by successively pel in the page being carried out the rasterization process first time, and write down each ordinal position place and carry out the attribute information of the pel of rasterization process for the first time, successively pel in this page is carried out the rasterization process second time more subsequently, and not simultaneously at the attribute information of the same ordinal position place pel that compares current attribute information that has passed through the pel of rasterization process for the second time and record, export the first error code information, thus can be automatic, orient the code that occurs BUG among the RIP fast and accurately.
Description of drawings
Fig. 1 is the principle flow chart of RIP error code localization method in the embodiment of the invention;
Fig. 2 is for carrying out the process flow diagram of rasterization process to a certain pel in the page in the embodiment of the invention;
Fig. 3 gives an example for the page that adopts in the embodiment of the invention;
Fig. 4 is the process flow diagram that in the embodiment of the invention page shown in Figure 3 is adopted RIP error code localization method;
Fig. 5 is the structural drawing of error code of grating image processor locating device in the embodiment of the invention;
Fig. 6 is the structural drawing of first rasterization unit in the embodiment of the invention;
Fig. 7 is the structural drawing of second rasterization unit in the embodiment of the invention.
Embodiment
In order to orient the code that occurs BUG among the RIP automatically, fast and accurately, the embodiment of the invention provides a kind of RIP error code localization method, carry out for the second time rasterization process and generate current having carried out for the second time in the bitmap summary sign indicating number process of the pel correspondence of rasterization process by pel in successively to the same page, carry out the corresponding bitmap summary sign indicating number of the attribute information of the pel of rasterization process for the first time and this pel with the same ordinal position place of record and compare, orient wrong code information.
Below in conjunction with Figure of description the specific embodiment of the present invention is elaborated.
The principle flow chart of the RIP error code localization method that the embodiment of the invention provides as shown in Figure 1, concrete steps are as follows:
Wherein, pel comprises path, character, image, gradual change, subpage frame etc., can also comprise one or more pels in the subpage frame.
Wherein, the attribute information of pel not only comprises the self attributes information of this pel, also comprises the attribute information of this pel place page, i.e. the environmental information of this pel.
Wherein, the first error code information comprises the attribute information of current pel, and the first error code type, i.e. pel generating code mistake.This code error produces before current pel is drawn.
If it is identical with the attribute information of the same ordinal position place pel of described record to compare the current attribute information that has passed through the pel of rasterization process for the second time, further comprise in the step 110: generate the current bitmap summary that has carried out the pel correspondence of rasterization process for the first time yard successively; Further comprise in the step 120: write down each ordinal position place and carry out the bitmap summary sign indicating number of the pel correspondence of rasterization process for the first time; Further comprise in the step 130: generate the current bitmap summary sign indicating number of the pel correspondence of rasterization process for the second time that carried out successively, when the attribute information that compares the current attribute information that has passed through the pel of rasterization process for the second time and the same ordinal position place pel of described record is identical, if compare the described current process bitmap summary sign indicating number of the pel correspondence of rasterization process for the second time, different with the bitmap summary sign indicating number that the same ordinal position place pel of described record is corresponding, then export the second error code information.
A certain pel has carried out after the rasterization process at every turn to the page, can adopt the MD5 algorithm to generate the bitmap summary sign indicating number of this pel correspondence, also can adopt other algorithms (as MD2, MD3 etc.) to generate the bitmap summary sign indicating number of pel correspondence.If the bitmap of two pel correspondences summary sign indicating number is identical, then the bitmap of these two pel correspondences is identical; If the bitmap of two pel correspondences summary sign indicating number is different, then the bitmap of these two pel correspondences is also different.
Wherein, the second error code information comprises the attribute information of current pel, and the second error code type, i.e. bitmap generating code mistake.This code error produces in the drawn process of current pel.
For the ease of follow-up primitive attribute information and bitmap summary sign indicating number are compared, can also comprise step before the step 110: the storage space that empties the bitmap summary sign indicating number that is used for record diagram meta-attribute information and pel correspondence.
In step 110 and the step 130, the flow process that a certain pel in the page is carried out rasterization process as shown in Figure 2, concrete steps are as follows:
Because in the prior art, after having drawn pending pel, the full detail relevant with pending pel that gets access to will be dropped, and in the present invention, need the attribute information of same ordinal position place pel be compared, therefore need be before drawing pending pel, from the full detail relevant with pending pel that gets access to, arrangement is the attribute information of the pending pel of buffer memory also.
The information relevant with pending pel that step 230, basis get access to is drawn pending pel.
The process of in this step pending pel being drawn is same as the prior art, repeats no more herein.
Be example with the page shown in Figure 3 below, corresponding specific embodiment with above-mentioned RIP error code localization method is elaborated.
Easy for follow-up explanation, at first the form to record diagram metamessage in the embodiment of the invention is described.
In the embodiment of the invention, can adopt the form record diagram metamessage of database, also can adopt other form record diagram metamessages, as the XML document form.Here, be that example describes to adopt database form record diagram metamessage, described primitive information can comprise the attribute information of pel and the bitmap summary sign indicating number of pel correspondence.The structure of master meter can be as shown in table 1 in the database:
Table 1 master meter structure
| Field | Note |
| FileName | Page name |
| PageIndex | The record in the page info table is pointed in page index |
| SepNameIndex | Look face index points to the record in the look surface information table |
| PaintIndex | Ordinal position shows that pel is that n is individual drawn |
| TypeOfCell | Primitive types, the corresponding a kind of pel self attributes information table of a kind of primitive types |
| CellIndex | The pel index points to the record in the corresponding pel self attributes information table |
| MD5[0]---MD5[4] | The MD5 code value.For this reason pel drawn after corresponding bitmap summary sign indicating number |
Wherein, FileName, PageIndex, SepNameIndex, PaintNumber, TypeofCell, the set of properties that CellIndex constitutes also is the attribute information of pel as the major key of master meter in the database.
Can index the self attributes information table of pel by CellIndex, it is the sublist of above-mentioned master meter, every kind of primitive types is all to there being a kind of pel self attributes information table, enumerate the structure of the self attributes information table of several representational pels below, respectively shown in table 2, table 3, table 4 and table 5:
The self attributes information table structure of table 2 rectangle (specific path)
| Field | Note |
| ID | Major key |
| BBox[0] | Rectangle lower left corner x coordinate |
| BBox[1] | Rectangle lower left corner y coordinate |
| BBox[2] | Rectangle upper right corner x coordinate |
| BBox[3] | Rectangle upper right corner y coordinate |
The path of table 3 in track buffering processor (Cache) or the self attributes information table structure of the character among the character Cache
| Field | Note |
| ID | Major key |
| IDInCache | The ID that distributes among the Cache |
| XPos | Lower left corner x coordinate |
| YPos | Lower left corner y coordinate |
Table 4 is the self attributes information table structure in the path in the Cache of path not
| Field | Note |
| ID | Major key |
| BBox[0] | Boundary rectangle lower left corner x coordinate |
| BBox[1] | Boundary rectangle lower left corner y coordinate |
| BBox[2] | Boundary rectangle upper right corner x coordinate |
| BBox[3] | Boundary rectangle upper right corner y coordinate |
| TypeofFill | Filling mode |
| noffset | Side-play amount in temporary file |
The self attributes information table structure of table 5 image, gradual change, subpage frame etc.
| Field | Note |
| ID | Major key |
| IDInManager | The ID that the corresponding management device distributes in the program |
The flow process of the embodiment of the invention as shown in Figure 4, concrete steps are as follows:
In this step,, then obtain the full detail relevant with this rectangle if current pending pel is the rectangle in the page shown in Figure 3; If current pending pel is the character in the page shown in Figure 3, then obtain the full detail relevant with this character; If current pending pel is the image in the page shown in Figure 3, then obtain the full detail relevant with this image; If current pending pel is the gradual change in the page shown in Figure 3, then obtain the full detail relevant with this gradual change; If current pending pel is the subpage frame (pattern) in the page shown in Figure 3, then need each pel that comprises in this Pattern is handled respectively according to the disposal route of each pel in the page.
Wherein, can be according to the form arrangement of table 1 and table 2 and the attribute information of buffer memory rectangle; Can be according to the form arrangement of table 1 and table 3 and the attribute information of buffer memory character; Can put the also attribute information of cache image, gradual change, subpage frame in order according to the form of table 1 and table 5; Wherein, the AIT of rectangle can be shown in the example of table 6:
The AIT of table 6 rectangle for example
| Field | Value |
| FileName | SnapShot.pdf |
| PageIndex | 1 |
| PaintIndex | 1 |
| TypeOfCell | 17 (rectangles) |
| CellIndex | 1 (ID of correspondence in the rectangle self attributes information table) |
The information relevant with this pending pel that step 404, basis get access to is drawn this pending pel;
Preferably, can be arranged on according to actual needs after this step, the bitmap after whether will drawing is derived, and checks comparison for the developer.
Preferably, need all generate bitmap summary sign indicating number to each look face of the bitmap of this pel correspondence, for example, the MD5 sign indicating number of Black look face is: D3 67 28 65 BA 12 96 60 38 57 0F 52 2C C6 5F 8C.
Preferably, the attribute information of rectangle and the bitmap summary sign indicating number of this rectangle correspondence can be recorded in master meter shown in table 1 and the table 2 and the sublist; The attribute information of character and the bitmap summary sign indicating number of this character correspondence can be recorded in master meter shown in table 1 and the table 3 and the sublist; The bitmap summary sign indicating number of the attribute information of image, gradual change and subpage frame (pattern) and this image, gradual change, subpage frame correspondence is recorded in master meter shown in table 1 and the table 5 and the sublist.
Whether the attribute information of the same ordinal position place pel that writes down in the attribute information of step 409, the current pel handled through step 408 more and the step 406 is identical, as if identical, and execution in step 410; If different, then export the first error code information, flow process finishes;
Whether the bitmap summary that the same ordinal position place pel of record is corresponding in the bitmap of step 410, more current pel correspondence summary sign indicating number and the step 406 is yard identical, if it is identical, with next pel in the page shown in Figure 3 as current pending pel, return step 408, do not had pending pel in the page, flow process finishes; If different, then export the second error code information, flow process finishes.
Preferably, in the embodiment of the invention, as long as compare the attribute information difference of a certain ordinal position place pel, or the bitmap of a certain ordinal position place pel correspondence summary sign indicating number is different, be the exportable first error code information or the second error code information, and need not again the follow-up pel that does not carry out the rasterization process second time to be handled.
Accordingly, the embodiment of the invention also provides a kind of error code of grating image processor locating device, and its structure comprises as shown in Figure 5:
Preferably, said apparatus also comprises:
Preferably, the structure of first rasterization unit 510 comprises as shown in Figure 6:
First obtains subelement 511, is used to obtain the full detail relevant with pending pel;
The first arrangement buffer memory subelement 512 is used for obtaining the relevant full detail of subelement 511 pels that get access to and pending, the attribute information of arrangement and this pending pel of buffer memory from first;
First draws subelement 513, is used for obtaining the relevant information of subelement 511 pels that get access to and pending according to first, draws this pending pel.
Preferably, the structure of second rasterization unit 530 comprises as shown in Figure 7:
Second obtains subelement 531, is used to obtain the full detail relevant with pending pel;
The second arrangement buffer memory subelement 532 is used for obtaining the relevant full detail of subelement 531 pels that get access to and pending, the attribute information of arrangement and the pending pel of buffer memory from second;
Second draws subelement 533, is used for obtaining the relevant information of subelement 531 pels that get access to and pending according to second, draws this pending pel.
The RIP error code localization method and the device that adopt the invention described above embodiment to provide, can orient the code that occurs BUG among the RIP automatically, fast and accurately, even the pel generating code mistake that before pel is drawn, produces, also can be positioned out, thereby improve the efficient of error code location.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (5)
1. an error code of grating image processor localization method is characterized in that, comprising:
Empty the storage space of the bitmap summary sign indicating number that is used for record diagram meta-attribute information and pel correspondence;
Successively pel in the page is carried out the rasterization process first time;
Write down each ordinal position place and carry out the attribute information of the pel of rasterization process for the first time;
Successively pel in the described page is carried out the rasterization process second time, if it is different with the attribute information of the same ordinal position place pel of described record to compare the current attribute information that has passed through the pel of rasterization process for the second time, then export the first error code information; And also comprise:
Generate the current bitmap summary sign indicating number of the pel correspondence of rasterization process for the first time that carried out successively; And
Write down each ordinal position place and carry out the bitmap summary sign indicating number of the pel correspondence of rasterization process for the first time;
Pel carries out in the process of the rasterization process second time in successively to the described page, generate the current bitmap summary sign indicating number of the pel correspondence of rasterization process for the second time that carried out successively, when the attribute information that compares the current attribute information that has passed through the pel of rasterization process for the second time and the same ordinal position place pel of described record is identical, if compare the described current process bitmap summary sign indicating number of the pel correspondence of rasterization process for the second time, different with the bitmap summary sign indicating number that the same ordinal position place pel of described record is corresponding, then export the second error code information.
2. the method for claim 1 is characterized in that, pel in the page is carried out rasterization process, comprising:
Obtain the full detail relevant with pending pel;
From the relevant full detail of described pel that get access to and pending, the attribute information of arrangement and the described pending pel of buffer memory;
According to the relevant information of described pel that get access to and pending, draw described pending pel.
3. an error code of grating image processor locating device is characterized in that, comprising:
Empty the unit, be used in first rasterization unit emptying the storage space of the bitmap summary sign indicating number that is used for record diagram meta-attribute information and pel correspondence before pel carries out the rasterization process first time in successively to the page;
First rasterization unit is used for successively pel in the page being carried out the rasterization process first time;
First record cell is used to write down each ordinal position place and carries out the attribute information of the pel of rasterization process for the first time;
Second rasterization unit is used for successively pel in the page being carried out the rasterization process second time;
First positioning unit is used for if compare the current attribute information that has passed through the pel of rasterization process for the second time differently with the attribute information of the same ordinal position place pel of described record, then exports the first error code information; And also comprise:
First generation unit is used for generating successively the current bitmap summary sign indicating number of the pel correspondence of rasterization process for the first time that carried out;
Second record cell is used to write down each ordinal position place and carries out the bitmap summary sign indicating number of the pel correspondence of rasterization process for the first time;
Second generation unit is used in successively to described page pel and carries out the process of rasterization process for the second time, generates the current bitmap summary sign indicating number of the pel correspondence of rasterization process for the second time that carried out successively;
Second positioning unit, be used for when the attribute information that compares the current attribute information that has passed through the pel of rasterization process for the second time and the same ordinal position place pel of described record is identical, if compare the described current process bitmap summary sign indicating number of the pel correspondence of rasterization process for the second time, different with the bitmap summary sign indicating number that the same ordinal position place pel of described record is corresponding, then export the second error code information.
4. device as claimed in claim 3 is characterized in that, described first rasterization unit comprises:
First obtains subelement, is used to obtain the full detail relevant with pending pel;
The first arrangement buffer memory subelement is used for obtaining the full detail relevant with pending pel that subelement gets access to, the attribute information of arrangement and the described pending pel of buffer memory from described first;
First draws subelement, is used for obtaining the information relevant with pending pel that subelement gets access to according to described first, draws described pending pel.
5. device as claimed in claim 3 is characterized in that, described second rasterization unit comprises:
Second obtains subelement, is used to obtain the full detail relevant with pending pel;
The second arrangement buffer memory subelement is used for obtaining the full detail relevant with pending pel that subelement gets access to, the attribute information of arrangement and the described pending pel of buffer memory from described second;
Second draws subelement, is used for obtaining the information relevant with pending pel that subelement gets access to according to described second, draws described pending pel.
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| CN2008102232915A CN101364204B (en) | 2008-09-28 | 2008-09-28 | Method and device for positioning error code of grating image processor |
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|---|---|---|---|
| CN2008102232915A CN101364204B (en) | 2008-09-28 | 2008-09-28 | Method and device for positioning error code of grating image processor |
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