Abstract: A method and apparatus for transporting portions of document images across a network in response to one or more requests are described. In one embodiment, the method comprises receiving a plurality of requests for portions of a JPM file and transmitting a JPM file in parts in response to the plurality of requests.

Abstract: A method, apparatus, and article of manufacture for locating machine readable codes (e.g., bar codes) in compressed representations are described. In one embodiment, the method comprises obtaining information from a file of a compressed representation of an image and locating a machine-readable code in the compressed representation of the image.

Abstract: A method and apparatus for assigning codeblocks to coders operating in parallel is described. In one embodiment, the method comprises decomposing input data into a plurality of code-blocks, and assigning the plurality of code-blocks, on a code-block basis, to a plurality of MQ coders to code the plurality of code-blocks in parallel to balance, to the extent possible, an amount of coding to be performed by each of the plurality of MQ coders.

Abstract: A method and apparatus for encoding and decoding data that includes generating transformed signals in response to input data. In one embodiment, the transformed signals are generated using a reversible wavelet transform. The present invention also includes a method and apparatus for compressing the transform signals into data representing a losslessly compressed version of the input data. In one embodiment, the present invention decomposes the input data using reversible wavelet transforms.

Abstract: A 5,3 wavelet filter is disclosed.

Abstract: A method and apparatus for eliminating flicker by quantizing values based on previous quantization is described. In one embodiment, the method comprises encoding a first coefficient value in a first frame of a motion sequence and subsequently setting a second coefficient in a second frame of the motion sequence and in the same position as the first coefficient to be within a predetermined closeness with the value of the first coefficient.

Abstract: A multimedia output device having embedded encryption functionality enables the outputting of content in an encrypted form. The multimedia output device receives the content to be encrypted, encrypts the content, and generates an electronic output of the encrypted content. The multimedia output device also generates an associated paper output that provides information about the decryption, such as a key, an identification of the electronic output of the encrypted content, and optionally a description of the contents of the content encrypted.

Abstract: A method and apparatus for specifying quantization based upon the human visual system is described. In one embodiment, the method comprises specifying scalar quantization for application to one or more bit planes of luminance information in image data using a human visual system (HVS) weighting and quantizing bit planes of the luminance information in the image data based on specified scalar quantization.

Abstract: An encoding process and a recompression process of encoded data are disclosed that appropriately select low-order bit planes and low-order sub bit planes, codes corresponding to which are not to be output. The low-order bit planes and low-order sub bit planes are selected based on an inverse value of the square root of the subband gain of inverse wavelet transform, such that the selected low-order bit planes and low-order sub bit planes are not encoded, or alternatively, are encoded, but later discarded during packet generation.

Abstract: A method of generating an output image having a lower resolution than that of a source image is provided. A thinned image is generated by discarding outer pixels of the source image. In parallel with generation of the thinned image, an averaged image is generated, such that each pixel of the averaged image represents an average of a subset of pixels in the source image. A first output image is then generated by subsampling the pixels of the thinned image. A final output image is generated as a function of both the first output image and the averaged image.

Abstract: A method and apparatus for handling restricted access and server/client hand-offs in a communication environment is described. In one embodiment, the method comprises receiving a first request for a first set of image data corresponding to an image, responding to the first request with the first set of image data, receiving a second request for a second set of image data corresponding to the image, determining that the second set of image data includes restricted data, sending a prompt for authentication, receiving the second request along with authentication information; determining again that the second request is for restricted data, checking the authentication information, and providing the second set of image data if the authentication information is correct.

Abstract: A method and apparatus for converting a JPP-Stream to JPEG 2000 codestream is described. In one embodiment, the method comprises writing a main header data-bin to an output JPEG 2000 codestream with a marker segment specifying use of a progression order with a layer progression last. The method also includes, for each tile, writing a legal tile header; and for each component, position and resolution in said each tile, determining a number of completely received layers, writing one or more bytes of precinct data-bin corresponding to completed layers to the output JPEG 2000 codestream, and writing an empty packet header for each packet of each layer that is not complete. Also for each tile, the method includes updating the SOT marker segment to adjust a length to the number of bytes of packet data. The method further includes writing an EOC marker at the end of the output JPEG 2000 codestream.

Abstract: A method and apparatus for performing partial image uploads. In one embodiment, the method comprises the server sending a portion of the compressed data of a codestream corresponding to an entire image to a client in response to a first request, the server receiving a second request from the client, the server determining the second request is an upload request, and the server combining compressed data of the third request with the codestream for the entire image.

Abstract: A method and apparatus for processing JPM files having layout objects and sideband information is described. In one embodiment, the method comprises receiving a JPM file having layout objects. The layout objects include at least one layout object that represents sideband image information for a purpose other than use in display of a decoded image. The method also includes creating the decoded image by accessing information in the JPM file corresponding to the layout objects and decoding the information. The sideband image information is not intended to be displayed with the decoded image and is absent from display of the decoded image.

Abstract: A method and apparatus for using layout objects or layers are described. In one embodiment, the method comprises accessing information in a JPM file having a plurality of layout object and generating at least one image using the plurality of layout object, wherein a first set of at least one of the layout objects of the plurality of layout objects in the image occludes a second set of one or more layout objects in the plurality of layout objects.

Abstract: A method and apparatus for transporting portions of a codestream over a communications mechanism is described. In one embodiment, the method comprises sending a request over a network and receiving tile-parts of a JPEG 2000 compliant codestream from the network as a return type as part of a response to the request.

Abstract: The present invention provides a method and apparatus for encoding and decoding data in parallel. The present invention provides a system for decompressing a data stream having multiple codewords. The system includes an input channel that receives the data stream. The system also includes a decoder which decodes each bit of the data stream, wherein at least two of the codewords in the data stream are decoded at the same time, such that the data stream is decoded in parallel.

Abstract: A motion sensor is mounted within a camera, and measures motion data such as translation, rotation, and zoom. The motion data is then associated with the video frame data captured by the camera. In some embodiments, the motion data is used to remove jitter in the frame data due to camera movement, and in some embodiments, the motion data is used to remove global motion from frame data before compression. Since the motion data is kept with the video frame data, the motion data is available during decompression of the video frames.