Method for determining restored scanning position
View Patent ↗A method for position restoration. By comparing the graphic data and the restored graphic data, the graphic data closest to the restored graphic data is selected. Therefore, the graphic data scanned subsequently is correctly connected to the restored graphic data to avoid the missing line or repetition of graphic data.
1. A method, comprising:
moving a scanner head along a first direction to scan a document;
stopping the scanner head and defining a position where the scanner head stops as a restored position, and defining a portion of data of the document scanned at the restored position as a restored graphic data;
moving the scanner head along a second direction with a first distance, wherein the second direction is opposite to the first direction;
moving the scanner head along the first direction with a second distance, wherein the second distance is smaller than the first distance;
moving the scanner head along the first direction in a stepping manner to scan the document, so as to obtain graphic data;
comparing the graphic data with the restored graphic data to select a graphic data closest to the restored graphic data defining connecting graphic data; and
connecting the connecting graphic data with graphic data scanned thereafter and with the restored graphic data.
2. The method according to claim 1 , and further comprising removing the graphic data scanned before the connecting graphic data after connecting the graphic data.
3. The method according to claim 1 , wherein connecting the graphic data further comprises replacing the restored graphic data with the connecting graphic data.
4. The method according to claim 1 , wherein the restored graphic data comprises a first plurality of pixels, and the graphic data comprises a second plurality of pixels, and wherein comparing the graphic data with the restored graphic data comprises comparing a portion of the second plurality of pixels to a portion of the first plurality of pixels.
5. The method according to claim 1 , wherein the restored graphic data comprises a first plurality of pixels, and the graphic data comprises a second plurality of pixels, and wherein comparing the graphic data with the restored graphic data comprises comparing at least some of the second plurality of pixels to the first plurality of pixels.
6. The method according to claim 1 , wherein comparing the graphic data comprises comparing a portion of the graphic data first scanned to the restored graphic data.
7. An apparatus, comprising:
means for moving a scanner head along a first direction to scan a document;
means for stopping the scanner head and means for defining a position where the scanner head stops as a restored position, and defining a portion of data of the document scanned at the restored position as a restored graphic data;
means for moving the scanner head along a second direction with a first distance, wherein the second direction is opposite to the first direction;
means for moving the scanner head along the first direction with a second distance, wherein the second distance is shorter than the first distance;
means for moving the scanner head along the first direction to scan the document, so as to obtain graphic data;
means for comparing the graphic data with the restored graphic data to select a graphic data closest to the restored graphic data and defining as a connecting graphic data; and
means for connecting the connecting graphic data with graphic data scanned thereafter and with the restored graphic data.
8. The apparatus of claim 7 , further comprising means for removing the graphic data scanned before the connecting graphic data after connecting the graphic data.
9. The apparatus of claim 7 , wherein the means for connecting the graphic data further comprises means for replacing the restored graphic data with the connecting graphic data.
10. The apparatus of claim 7 , wherein the restored graphic data comprises a first plurality of pixels, and the graphic data comprises a second plurality of pixels, and wherein the means for comparing the graphic data with the restored graphic data comprises means for comparing a portion of the second plurality of pixels to a portion of the first plurality of pixels.
11. The apparatus of claim 7 , wherein the restored graphic data comprises a first plurality of pixels, and the graphic data comprises a second plurality of pixels, and wherein the means for comparing the graphic data with the restored graphic data comprises means for comparing at least some of the second plurality of pixels to the first plurality of pixels.
12. The apparatus of claim 7 , wherein the means for comparing the graphic data comprises means for comparing a portion of the graphic data first scanned to the restored graphic data.
13. An article comprising: a storage medium having stored thereon instructions that, if executed, results in determining a restored scanning position by:
moving a scanner head along a first direction to scan a document;
stopping the scanner head and defining a position where the scanner head stops as a restored position, and defining a portion of data of the document scanned at the restored position as a restored graphic data;
moving the scanner head along a second direction with a first distance, wherein the second direction is opposite to the first direction;
moving the scanner head along the first direction with a second distance, wherein the second distance is smaller than the first distance;
moving the scanner head along the first direction in a stepping manner to scan the document, so as to obtain graphic data;
comparing the graphic data with the restored graphic data to select a graphic data closest to the restored graphic data and defining as a connecting graphic data; and
connecting the connecting graphic data with graphic data scanned thereafter and with the restored graphic data.
14. The article of claim 13 , wherein said storage medium further includes instructions that, if executed, further result in the .graphic data scanned before the connecting graphic data being-removed after connecting the graphic data.
15. The article of claim 13 , wherein said storage medium further includes instructions that, if executed, further result in connecting the graphic data by replacing the restored graphic data with the connecting graphic data.
16. The article of claim 13 , wherein the restored graphic data comprises a first plurality of pixels, and the graphic data comprises a second plurality of pixels, and wherein comparing the graphic data with the restored graphic data comprises means for comparing a portion of the second plurality of pixels to a portion of the first plurality of pixels.
17. The article of claim 13 , wherein the restored graphic data comprises a first plurality of pixels, and the graphic data comprises a second plurality of pixels, and wherein comparing the graphic data with the restored graphic data comprises means for comparing at least some of the second plurality of pixels to the first plurality of pixels.
18. The article of claim 13 , wherein said storage medium further includes instructions that, if executed, further result in comparing the graphic data by comparing a portion of the graphic data first scanned to the restored graphic data.