Method for enhancing scan resolution
OwnerShih-Zheng Kuoinventor
Life of this patent
Estimating the term…
Abstract
A method for enhancing scan resolution, suitable for the application of a scanner with a sensor. The range that a detecting cell in the sensor can detect is the original pixels with a predetermined number. The scanned result of the detecting cell is called the scanned pixels. In the method for enhancing scan resolution, a smooth image region is scanned to obtain a smooth image data. The smooth image region includes at least the above original pixels with the predetermined number. The smooth image region has a uniform brightness. According to the smooth image data, the scanned pixels obtained from scanning the document are processed.
Claims35
A method of enhancing scan resolution, suitable for use in a scanner with an optical sensor, the optical sensor having a detecting cell that can detect a range comprising a predetermined number of two or more original pixels, the method comprising:
- scanning a smooth image region that is separate from a document, wherein the smooth image region comprises at least the predetermined number of original pixels, and wherein the smooth image region comprises a generally uniform brightness;
- determining a smooth brightness from the scanned smooth image region, wherein the smooth brightness corresponds to the generally uniform brightness of the smooth image region;
- scanning a range of multiple original pixels, wherein one or more of the scanned original pixels correspond to the document;
- and
- determining a brightness of at least one of the scanned original pixels corresponding to the document based, at least in part, on the smooth brightness.
A method of enhancing scan resolution, suitable for use in a scanner with an optical sensor, the optical sensor having a detecting cell that can detect a range comprising a predetermined number of two or more original pixels, the method comprising:
- scanning a smooth image region that is separate from a document to obtain a smooth image data, wherein the smooth image region comprises at least the predetermined number of original pixels, and wherein the smooth image region comprises a generally uniform brightness;
- determining a smooth brightness from the smooth image data, wherein the smooth brightness corresponds to the generally uniform brightness of the smooth image region;
- and
- determining a brightness of scanned images obtained by scanning the document based, at least in part, on the smooth brightness, wherein the smooth image data is obtained after scanning the document.
A method of enhancing scan resolution, suitable for use in a scanner with an optical sensor, the optical sensor having a detecting cell that can detect a range comprising a predetermined number of two or more original pixels, the method comprising:
- scanning a smooth image region to obtain a smooth image data, wherein the smooth image region comprises at least the predetermined number of original pixels and a generally uniform brightness;
- and
- processing scanned images obtained by scanning a document according to the smooth image data, wherein processing the scanned images comprises:
- obtaining a calculated smooth brightness of the original pixels corresponding to scanned pixels of the smooth image data;
- and
- using the calculated smooth brightness corresponding to the original pixels with the predetermined number minus one in the smooth image region as a standard to calculate a calculated brightness corresponding to original pixels of the document.
A method, comprising:
- scanning a smooth image region separate from another image region, the smooth image region having a generally uniform brightness;
- obtaining a standard brightness from the smooth image region, wherein the standard brightness corresponds to the generally uniform brightness of the smooth image region;
- and
- scanning a predetermined number of multiple original pixels, wherein one or more of the scanned original pixels correspond to the other image region;
- and
- determining a calculated brightness for at least one of the scanned original pixels corresponding to the other image region based at least in part on the standard brightness.
A storage medium, comprising one or more instructions thereon that, if executed, result in:
- enhancing scan resolution in a scanner with an optical sensor having a detecting cell that can detect a range including a predetermined number of two or more original pixels, wherein enhancing scan resolution comprises:
- scanning a smooth image region to obtain a smooth image data, wherein the smooth image region comprises at least the predetermined number of original pixels and a generally uniform brightness;
- and
- processing scanned images obtained by scanning a document according to the smooth image data, wherein processing the scanned images comprises:
- obtaining a calculated smooth brightness of the original pixels corresponding scanned pixels of the smooth image data;
- and
- using a calculated smooth brightness corresponding to the original pixels with the predetermined number minus one in the smooth image region as a standard to calculate a calculated brightness corresponding to original pixels of the document.
A computer-readable storage medium, comprising one or more instructions thereon that, if executed, result in:
- scanning a smooth image region that is separate from another image region, the smooth image region having a generally uniform brightness;
- obtaining a standard brightness from the smooth image region, wherein the standard brightness corresponds to the generally uniform brightness of the smooth image region;
- and
- scanning a predetermined number of multiple original pixels, wherein one or more of the scanned original pixels correspond to the other image region;
- and
- determining a calculated brightness for at least one of the scanned original pixels corresponding to the other image region based at least in part on the standard brightness.
An apparatus, comprising:
- means for scanning a smooth image region that is separate from another image region, the smooth image region having a generally uniform brightness;
- means for obtaining a standard brightness from the smooth image region, wherein the standard brightness corresponds to the generally uniform brightness of the smooth image region;
- means for scanning a predetermined number of multiple original pixels, wherein one or more of the scanned original pixels correspond to the other image region;
- and
- means for determining a calculated brightness for at least one of the scanned original pixels corresponding to the other image region based at least in part on the standard brightness.
A system, comprising:
- a sensor capable of scanning a smooth image region with a generally uniform brightness separately from scanning a range of multiple original pixels, wherein one or more of the scanned original pixels correspond to another image region;
- and
- a scanner capable of obtaining a standard brightness from the smooth image region, wherein the standard brightness corresponds to the generally uniform brightness of the smooth image region, and wherein the scanner is capable of determining a calculated brightness for at least one of the scanned original pixels corresponding to the other image region based at least in part on the standard brightness.
Dependencies are inferred from the claim text.