Abstract:
A scanning or copying system can include imaging elements and one or more system processors that are programmed or adapted to perform image processing methods and algorithms on image data, and in some instances, to enhance the image. Image data is acquired using imaging elements. Some imaging elements may have overlapping or rotated fields of view or employ differing resolutions. For each imaging element, its output is recombined together with the output of one or more other imaging elements. To perform the recombination, the system can extract features in an overlapping region and match these features in multiple images. In some instances, the features matched can be edges. Alternatively, the recombination can be performed by positioning each subimage with respect to a larger image through image matching and location techniques. Parameters from the recombined image can be extracted and these parameters can be used to correct for geometrical and spatial distortions and thereby enhance the image.
Abstract:
Apparatus for digitizing images (1) includes a reader device (3), such as a CCD array, having a photo-sensitive surface (4) that comprises a large number of pixels arrayed longitudinally and laterally. The reader device (3) is subjected to a ninety degree rotation and/or linear displacement by a distance of several pixels, as necessary, before and/or during the digitization process so as to provide optimum digital resolution for a variety of image formats.
Abstract:
An improved high resolution scanner for use in a conventional scanner housing. A light receiving guide transversely moves a conventional lens and CCD for scanning portions of an object to be scanned. The resulting scanned portions, when combined, produce a high resolution image of the scanned image.
Abstract:
An automatic document feeder (ADF) has a paper path that starts with an input tray, leads to an operational station such as a scanner, and then ends with a substantially vertical output tray. The ADF has a mechanism for picking off an individual media sheet from a stack of sheets in the input tray and propelling the sheet to the operational station where a function is performed on the sheet. Thereafter the ADF propels the sheet partially into the output tray, and momentarily stops or reverses the direction of travel of the media sheet before finally driving the entire sheet into the output tray. This ensures that if the topmost sheet in a stack in the output tray which is being lifted up by the sheet being driven into the output tray, the topmost sheet will be fall back down to a rest position in the output tray and will not spill out of the output tray. The combination ADF and scanner can be operated so that it will automatically detect whether a standard-sized sheet of media is being fed into the scanner in landscape orientation or an over-sized sheet of media is being fed into the scanner in portrait orientation. In the case of the latter, first and second portions of the over-sized sheet are successively registered over the transparent platen of the scanner and scanned. The over-sized sheet is thereafter ejected from the scanner into an output tray. The resulting digital images of the first and second portions of the over-sized sheet are rotated, stitched together by a control circuit using software and/or firmware algorithms and the complete image of the over-sized sheet is stored in a memory, faxed or printed.
Abstract:
A composite higher resolution image of an object can be obtained by combining or patching together multiple low-resolution camera images to form a composite image having a higher resolution. Each low-resolution camera image represents a subsection of an object (also referred to as “object subsection”) to be scanned. For example, each subsection may represent a quadrant of a document page. With the use of a periscope, the image visible to the camera can be shifted to capture images of the various object subsections. Mosaicing techniques are used to combine these camera images into a composite image of the object. This approach to scanning improves the resolution of documents scanned while using existing low cost video cameras.
Abstract:
The present invention relates to an optical scanner (20) comprising a radiation source (24) for generating a radiation beam, and means (22), (26) for giving the radiation beam a scanning movement in a first direction through an angular range &Dgr;&thgr;1 and in a second direction through an angular range &Dgr;&thgr;2. The radiation source (24) is, for example a diode laser and is tunable in wavelength, and the means comprise a rotating reflecting element and a grating.
Abstract:
An improved high resolution scanner for use in a conventional scanner housing. A plurality of mirrors, including a two-position switchable mirror adapted to sequentially scan a first column, and then a second column, is mounted on a carriage which also includes a conventional lens and CCD for sequentially scanning an object to be scanned in a two-pass scan. The resulting scanned portions, when combined, produce a high resolution image of the scanned image.
Abstract:
A digital camera configurable to obtain an image of a document, the camera comprising: first illumination means for illuminating the document in a first pass of the camera; second illumination means for illuminating the document in a second pass of the camera; image sensing means for capturing an image of the document from the passes; control means for controlling the sensing means, the control means being configured to control capture of a first portion of the image of the illuminated document during the first pass the first pass thereby resulting in a first image data, and the control means being configured to control capture of a second portion of the image of the illuminated document during the second pass the second pass thereby resulting in a second image data; means for storing the first and second image data; and means for processing the first and second image data so as to obtain a final image of the document.
Abstract:
An image combining device scans an image on a large document and prints it. The device includes a memory for storing image signals. In accordance with a first aspect of the device, a scanner scans areas of the document which are individually smaller than the area of the entire document, but combines the areas so as provide an eye-readable representation of the image which was on the large document. This is achieved quickly and efficiently by adjusting a magnification ratio applied to scanned image data, so as to allow the data to fit within the memory. In accordance with another aspect of the device, the combination of the images and the printing of the output are achieved by compressing image data using a binarization processor.
Abstract:
An image processing apparatus including a scanner unit for reading an image of an original document, a memory which, if the image is read by the scanner unit in a divided manner as a plurality of partial images, stores the read partial images as respective partial document data, and a joint-portion processing section for recognizing joints of the partial document data stored in the memory and for joining the partial document data according to the recognized joints.