CN1393798A - Method and device for increasing resolution of scanner - Google Patents
Method and device for increasing resolution of scanner Download PDFInfo
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- CN1393798A CN1393798A CN 01119865 CN01119865A CN1393798A CN 1393798 A CN1393798 A CN 1393798A CN 01119865 CN01119865 CN 01119865 CN 01119865 A CN01119865 A CN 01119865A CN 1393798 A CN1393798 A CN 1393798A
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Abstract
The invention discloses the method and the device for increasing the resolution of scanners without changing hardware specifications of the scanner. after the pre-scanning program being executed, the user selects the scanning area and resolution. The scanning operations are carried out according to the standard selected by the user if the amount of the data of the said standard to be processed does not exceed the largest limit that can be processed by the hardware of the scanner. If the amount of the data exceeds the largest limit, the scanning operations are carried out within the selected area and with the highest resolution supported by the hardware of the scanner. Finally, the resolution of the scanned image can be increased by the user of the interpolation operation.
Description
The invention relates to a kind of method and apparatus that is used to improve resolution of scanner, be meant especially under the situation that does not change the scanner hardware specification, still to be improved the method and apparatus of resolution of scanner.
Along with the continuous development of electronic technology, the function and the travelling speed that are used to support the external unit of computer system to provide also constantly improve.With regard to scanner, except constantly improving scanning resolution and color display effect, after present scanner also can scan operation be finished, duplicate (Copy) operation or scan image is sent to specified destination in the mode of fax (Fax) by computer system to carry out by the mode of printer prints scan image.In addition, owing to the operation of scanner is constantly simplified, so information household appliances market also becomes the following target of making great efforts developing of MICROTEC.
In order to reduce the cost of scanner, scanner is assembled with the assembly than low side mostly by manufacturer, so hardware of scanner, application-specific IC (Application specificintegrated circuit for example, ASIC), often can only handle 16KB even data volume still less, and present scanner can provide in various degree resolution to carry out image scanning, thereby when processing had the scan image of high-resolution, it is to greatest extent treatable that the data volume of required processing (for example pixel quantity of required processing) often surpasses scanner hardware institute.For instance, when the user is scanned the scanning document shown in Figure 1A, if it is treatable to greatest extent the time that the data volume of scanning document will surpass scanner hardware institute, then scanner is just after the prescan program is finished, on operation interface, show picture, do the selection of scanning area and resolution for the user as Figure 1B or Fig. 1 C.Significantly, because scanning document right side area 104A and 104B are not shown in Figure 1B, so discontinuous sense meeting visually causes puzzlement to user's subsequent operation.In order to overcome above-mentioned problem, at known scanner, especially in the scanner of some low sides, it often requires the user that scanning document is placed in the central authorities or specific region of scanner transparency window, is used to obtain acceptable scan image.Therefore need badly a kind ofly under the situation that does not change the scanner hardware specification, still can provide the user that the All Ranges of scanning document is carried out the method and apparatus that scanning area and resolution are chosen, be used to overcome the difficult problem that known technology faces.
Fundamental purpose of the present invention is to provide a kind of and can changing under the scanner hardware specification conditions, still the method and apparatus that can carry out scan operation according to selected scanning area of user and resolution.
For achieving the above object, method of the present invention is: after scanning sequence in advance, choose required sweep limit and resolution by the user.To surpass scanner hardware institute treatable to greatest extent the time when the required data processing amount of selected sweep limit and resolution, then scanner will be according to user selected resolution and sweep limit, scanning document is carried out scan operation, and the scan image demonstration is watched for the user; If it is treatable to greatest extent the time that the required data processing amount of selected sweep limit and resolution surpasses scanner hardware institute, the highest resolution that can support with scanner hardware then is to selected sweep limit execution scan operation; Next utilize interpolative operation to improve the resolution of scan image again, last will the demonstration for the user through the scan image of interpolative operation again watched.
Device of the present invention is: comprise a scanner resident module, be used to provide program code to carry out for the main frame processor, wherein main frame and scanner produce electrical couplings via a line.The scanner resident module mainly comprises interpolative operation control code module, a deal with data amount judge module and user's interface resources sign indicating number module.Wherein interpolative operation control code module comprises the required program code of execution interpolative operation; The data processing amount judge module then stores the program code that is used to judge required data processing amount size, and it is that the required data processing amount of the resolution imported according to the user and sweep limit is judged; User's interface resources sign indicating number module then stores and shows that the required figure in the associative operation interface watched for the user, icon or other show the program code of resource.And the processor of main frame can be carried out the control code that above-mentioned module provides, and is used to carry out feature operation required for the present invention and shows that related interfaces watches for the user or carry out operation such as choosing of sweep limit and resolution.
After adopting the present invention, under the situation that does not change the scanner hardware specification, can realize the raising of scanning resolution, effectively improve the ratio of performance to price of scanner.
Describe embodiments of the present invention in detail below in conjunction with accompanying drawing.
Figure 1A is a scanning document synoptic diagram;
Figure 1B by the scanning document of Figure 1A surpass known scanner hardware during energy deal with data amount, be presented at first kind of situation synoptic diagram on the operation interface;
Fig. 1 C by the scanning document of Figure 1A surpass known scanner hardware during energy deal with data amount, be shown in second kind of situation synoptic diagram on the operation interface;
Fig. 2 is the operational flowchart of preferred embodiment of the present invention;
Fig. 3 is the block diagram of preferred embodiment of the present invention;
Fig. 4 is the software architecture diagram of preferred embodiment of the present invention.
Description of reference numerals:
102,104A, 104B: the zone that scanning document does not show;
32: scanner;
322: scanning element;
34: main frame;
342: processor;
344: the scanner resident module;
346: internal memory;
36: line;
38: display;
402: interpolative operation control code module;
404: the data processing amount judge module;
406: user's interface resources sign indicating number module.
At first see also Fig. 2.At first, when scanner scanning document is carried out prescan program (pre-scan) with the scope and size that obtain scanning document after, the image of prescan will be displayed on choose (step 202) of carrying out sweep limit and resolution on the operation interface for the user, and operation interface wherein is to be presented on the graphoscope that is coupled with scanner.Next will judge the required data processing amount of selected sweep limit of user and resolution (for example pixel quantity), the maximum that whether surpasses scanner hardware (for example ASIC) is handled limit (step 204).To surpass scanner hardware institute treatable to greatest extent the time when the data volume of required processing, then the highest resolution of being supported with scanner hardware is to selected sweep limit, be used for scanning document is carried out scan operation (step 206), again the scan image that is produced is carried out interpolative operation (Interpolation) subsequently, watch (step 210) to improve the resolution (step 208) of scan image, to show again at last the image that is produced behind the interpolative operation for the user.On the other hand, when required data volume surpass scanner hardware to greatest extent the time, then scanning document is carried out scan operation and produces scan image (step 212), show again that then the scan image that is produced supplies the user to watch (step 210) with user selected sweep limit and resolution.
It should be noted that what demonstration supplied user's selection in step 202 is the four corner of scanning document, is not as known technology, only show that the parts of images as Figure 1B or Fig. 1 C supplies to choose.In addition, the judgement of the data processing amount that is carried out in the step 204, be according to scanner image-pickup device (for example CCD, CIS or CMOS sensor) treatable ultimate resolution (for example 300,600,1200 or 2400dpi (Dot-per-inch)), each pixel of arranging in pairs or groups (Pixel) the color byte quantity (for example RGB system) and the selected scanning area of user (it will determine the image size) that comprise, be used to calculate the data volume of required processing.As for employed interpolation rule in the step 208 can bilinear, bicubic or any in be used for the algorithm of image interpolation computing, be familiar with can being selected of present technique according to actual demand.
Next see also Fig. 3, its structure mainly comprises scanner 32 and main frame 34 two parts, the two via a line 36 to produce electrical couplings, to use in transmitting data to each other.For example, transmit scan images to main frame 34 or by the state of main frame 34 detecting scanners 32 (for example scanner 32 whether normal operation etc.) by scanner 32.In addition, main frame 34 also is coupled with display 38, is used for operation display interface and scan image and watches for the user.Scanner 32 mainly comprises a scanning element 322 that is used for carrying out scanning (comprising prescan) operation, it can further comprise image sensering device, such as charge-coupled device (CCD) (Charge coupled device, CCD), connect airtight the type imageing sensor (Contact image sensor, CIS) or cmos sensor (CMOS sensor); Be used to handle light-electricity conversion and produce the hardware (for example ASIC) of scan image and device and systems such as internal memory.Mainly comprise processor 342, scanner resident module 344 and internal memory 346 as for 34 of main frames, wherein processor 342 (can comprise at least one processor) is to carry out the program code that scanner resident module 344 is provided, and is used to carry out the operations such as judgement, interpolative operation and display operation circle face Gui of data processing amount; Internal memory 346 is the transient data that produced of storage processor 342 then, such as the light signal that is shown to user data such as (promptly being sent to display 38 subsequently show).
The block diagram for software modules of scanner resident module 344 please refer to Fig. 4, and it mainly comprises modules such as interpolative operation control code module 402, data processing amount judge module 404 and user's interface resources sign indicating number module 406.Interpolative operation control code module 402 is to store the control code of carrying out interpolative operation for processor; Whether the scan data volume that 404 of data processing amount judge modules store present required processing surpasses scanning hardware institute energy processing controls sign indicating number, and it is to judge according to user selected scanning resolution and sweep limit.Store the module of the figure (Graphic), icon (Icon) or other the resource method sign indicating number that is used to show that show that the operation interface watched for the user is required as for 406 of user's interface resources sign indicating number modules.So processor 342 can be carried out control code or the resource sign indicating number that above-mentioned module provides, be used to carry out feature operation required for the present invention and show that related interfaces watches for the user or carry out operation such as choosing of sweep limit and resolution.It should be noted, the program code that scanner resident module 344 is comprised then can be stored in any storing media that supplies computing machine to read, for example in the portable storing medias such as CD (CD), disk (Floppy disk) or MO (Magnetic optical) sheet, or after the driver of scanner 34 is loaded main frame 34 and be stored in the hard disk of main frame 34, is familiar with the visual practical situations of present technique and is selected.
A preferred embodiment of the present invention openly as above, but it is not in order to limiting the present invention, any change in the present invention conceives scope all drops in protection scope of the present invention.
Claims (10)
1. method that improves the scanner image resolution ratio, this method comprises: scanning document is carried out scan operation, it is characterized in that: determine that a sweep limit and resolution are to obtain the data volume of required processing; When this data volume surpass this scanner hardware institute energy deal with data amount to greatest extent the time, the highest resolution that utilizes this scanner to support is carried out scan operation to this sweep limit, produce a scan image, utilize interpolative operation (Interpolation) again to improve the resolution of this scan image.
2. the method for raising scanner image resolution ratio according to claim 1 is characterized in that: when data volume surpasses this to greatest extent the time, according to this resolution sweep limit is carried out the step of scan operation.
3. the method for raising scanner image resolution ratio according to claim 1 is characterized in that: required data volume is that the ultimate resolution of supporting according to the image sensering device of this scanner, the color byte quantity that pixel comprised and this sweep limit of each scan image produce.
4. the method for raising scanner image resolution ratio according to claim 2, it is characterized in that: above-mentioned image sensering device is charge-coupled device (CCD) (Charge coupled device, CCD), connect airtight the type imageing sensor (Contact image sensor, CIS) or cmos sensor (CMOS sensor).
5. the method for raising scanner image resolution ratio according to claim 1 is characterized in that: described interpolative operation is to utilize Bilinear or Bicubic algorithm to carry out.
6. the method for raising scanner image resolution ratio according to claim 1, it is characterized in that: this method more comprises carries out prescan (Pre-scan) step to a scanning document, and wherein the scan image in advance of this scanning document is to show for choosing sweep limit and resolution.
7. computer recording medium, can supply the main frame processor to carry out in order to store, to improve the program code of the method for scan image resolution under the hardware specification that does not change this scanner, the stored program code of this computer recording medium is in order to carry out the following step at least: the data volume that obtains required processing according to a sweep limit and resolution; When this data volume surpass that the hardware institute of this scanner can the deal with data amount to greatest extent the time, utilize highest resolution that this scanner supports to this sweep limit execution scan operation, in order to produce a scan image; Utilize interpolative operation (Interpolation) to improve the resolution of this scan image.
8. computer recording medium according to claim 7, it is characterized in that: it comprises at least: interpolative operation control code module, in order to store the program code of carrying out this interpolative operation; The data processing amount judge module stores in order to judge the program code of this data volume size; And user's interface resources sign indicating number module, the storage resources program code, wherein this resource method code is to be used for operation display interface for choosing resolution.
9. scanner, this scanner is to produce electrical couplings with a main frame, this scanner comprises at least: scanning element, in order to produce scan image, it is characterized in that: this scanner at least also comprises a scanner resident module, in order to store the program code of carrying out for storer that this main frame comprises, this scanner resident module comprises at least: interpolative operation control code module, in order to store the program code of carries out image interpolative operation; The data processing amount judge module stores in order to judge the program code of view data process lot size; And user's interface resources sign indicating number module, the storage resources program code, wherein this resource method code is for choosing sweep limit and resolution in order to operation display interface; Wherein this processor is to carry out the stored program code of this data processing amount judge module, in order to judge the data volume of the required processing of scan image that this sweep limit and this resolution are specified, and to surpass this scanning element institute treatable to greatest extent the time when the data volume of the required processing of this scan image, this processor is carried out the stored program code of this interpolative operation control code module, in order to this scan image is carried out interpolative operation.
10. scanner according to claim 9 is characterized in that: the scan image of described this interpolative operation of execution is with the ultimate resolution that this scanning element is supported this selected sweep limit to be carried out scan operation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01119865 CN1393798A (en) | 2001-07-03 | 2001-07-03 | Method and device for increasing resolution of scanner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01119865 CN1393798A (en) | 2001-07-03 | 2001-07-03 | Method and device for increasing resolution of scanner |
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| CN1393798A true CN1393798A (en) | 2003-01-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433779C (en) * | 2006-04-28 | 2008-11-12 | 天津大学 | Full phase discrete cosine changing interpolating kernel function and change for image resolution |
| CN101202807B (en) * | 2006-12-11 | 2010-09-15 | 佳能株式会社 | Image-processing system, method of controlling image-processing system |
| US8451510B2 (en) | 2008-06-30 | 2013-05-28 | Samsung Electronics Co., Ltd. | Image processing apparatus and image processing method thereof |
-
2001
- 2001-07-03 CN CN 01119865 patent/CN1393798A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433779C (en) * | 2006-04-28 | 2008-11-12 | 天津大学 | Full phase discrete cosine changing interpolating kernel function and change for image resolution |
| CN101202807B (en) * | 2006-12-11 | 2010-09-15 | 佳能株式会社 | Image-processing system, method of controlling image-processing system |
| US8149472B2 (en) | 2006-12-11 | 2012-04-03 | Canon Kabushiki Kaisha | Image-scanning system, method of controlling image-scanning system, and computer readable medium therefor |
| US8451510B2 (en) | 2008-06-30 | 2013-05-28 | Samsung Electronics Co., Ltd. | Image processing apparatus and image processing method thereof |
| CN101621606B (en) * | 2008-06-30 | 2014-04-09 | 三星电子株式会社 | Image processing apparatus and image processing method thereof |
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