Abstract:
The invention concerns a method of inserting a suppementary information item in a set of data reprenting physical quantities, the data having been processed by the steps of, a) partitioning (E2) the set into subsets, b) entropic coding (E4) of each of the subsets, c) selecting (E8), for each of the subsets, a compression rate and distortion pair according to a global compression rate or a global distortion, d) writting, for each of the subsets, an index (Tij) representing the selected compression rate and distortion pair, in a file containing the coded subsets, characterised in that it also includes a step (E11) of modifying the selected compression rate and distortion pairs, according to the supplementary information (wm).
Abstract:
Techniques and mechanisms are provided for facilitating the capture and review of visual images by visually impaired users. In one implementation, these techniques and mechanisms provide pre image capture functionality and captured image review functionality. With the pre image capture functionality, audio messages are provided to the user to help the user position an image capturing mechanism properly to capture the desired subjects in a picture, to frame the subjects properly within the picture, to size the subjects properly within the picture, etc. With the image review functionality, audio messages are provided to the user to help the user enjoy and "visualize" a visual image that has been captured and is being displayed to the user. With these functionalities, a visually impaired user is able capture and review images to a much greater degree than is currently possible.
Abstract:
An apparatus and method for identifying image capture opportunities. Expert photo agents (526) that process metadata extracted from a captured image are obtained (706) at a user -device (102). Metadata (214) characterizing visual content of a captured image is produced (310) by processing the visual content of the captured image. Image capture opportunities are selected (410) based upon processing of the metadata with the at least one expert photo agent. The image capture opportunity selection specifies content to capture in a subsequent image.
Abstract:
A method of determining the geographic location of a hardcopy medium having an image side and a non-image side, includes scanning a hardcopy medium to produce a scanned digital image; scanning the non-image side of the hardcopy medium; detecting a location feature from the scan of the non-image side of the hardcopy medium; using the location feature to determine the geographic location of the scanned digital image; and storing the determined geographic location of the scanned digital image.
Abstract:
The invention concerns a method of inserting a suppementary information item in a set of data reprenting physical quantities, the data having been processed by the steps of, a) partitioning (E2) the set into subsets, b) entropic coding (E4) of each of the subsets, c) selecting (E8), for each of the subsets, a compression rate and distortion pair according to a global compression rate or a global distortion, d) writting, for each of the subsets, an index (Tij) representing the selected compression rate and distortion pair, in a file containing the coded subsets, characterised in that it also includes a step (E11) of modifying the selected compression rate and distortion pairs, according to the supplementary information (wm).
Abstract:
The present invention relates to a system and a method for transmitting image information acquired as a digital image file (6) in an image information acquiring operation by an image information acquiring means (5), to a data network (2). The system comprises an input device (4) for input of meta information regarding a selected image, which comprises image information acquirable by said image information acquiring means (5). Further it comprises means for connecting said meta information regarding said selected image to the digital image file (6) in connection with an image information acquiring operation whereby said image information acquiring means (5) acquires the image information of said selected image. It also comprises means for transmitting said meta information (18b) regarding said selected image and the digital image file (18a) to said data network (2).
Abstract:
Watermark and pattern detection can be improved by compensating for artefacts introduced into an image by a printer and/or scanner through which the image has passed (24). With the present invention, prior to watermark or pattern detection, the image is filtered or modified to compensate for artefacts introduced by the printer and/or scanner. User is provided with an interface which can be used to change certain parameters such as contrast and intensity (23). The changes made by the user change the compensation (i.e. the tone map) applied to the image. If the user changes the compensation applied to the image it can affect the ability to read the watermark. The present invention provides a system which reverses any compensation introduced by the user so that the watermark or pattern can be more easily read (25). In another embodiment the invention takes into consideration that some printers and scanners have transfer functions which differ in the "x" and "y" directions. Thus the compensation introduced by the filter can differ in the "x" and "y" directions. In one embodiment, a scanner introduces aliasing frequencies into an image. Detection is improved by selectively removing certain frequencies. In another embodiment, the filter compensates for fact that the scanner frequency response falls off at higher frequencies.
Abstract:
A text is inserted as watermark into digital data by using wavelet transform and discrete cosine transform. The method of inserting a text into digital data comprises the steps of: converting said digital data to have a 2-dimensional image format; converting the text to have the 2-dimensional image format; and inserting the converted text into the converted digital data by using DCT and DWT. The text is extracted from the text watermarked digital data by recovering the converted text of the 2-dimensional format using the text watermarked digital data and the original digital data; and extracting the text form the recovered text of the 2-dimensional format.