Patents by Inventor Tinku Acharya

Tinku Acharya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for adaptively sharpening an image
    Patent number: 6640017
    Abstract: Briefly, in accordance with one embodiment of the invention, a method of sharpening an image includes the following. A crispening parameter is adaptively computed for a captured image based, at least in part, on a measure of the edges and brightness of the captured image. A kernel is applied to the captured image using the adaptively computed crispening parameter.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: October 28, 2003
    Assignee: Intel Corporation
    Inventors: Ping-Sing Tsai, Yap-Peng Tan, Tinku Acharya
  • Method and apparatus for image retrieval
    Publication number: 20030198387
    Abstract: Embodiments of a method and/or apparatus for retrieving images are disclosed.
    Type: Application
    Filed: April 22, 2002
    Publication date: October 23, 2003
    Inventors: Tinku Acharya, Bhabatosh Chanda, Amit K. Das, Sanjoy K. Saha
  • Method of generating Huffman code length information
    Patent number: 6636167
    Abstract: Embodiments of a method of generating Huffman code length information are disclosed. In one such embodiment, a data structure is employed, although, of course, the invention is not limited in scope to the particular embodiments disclosed.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: October 21, 2003
    Assignee: Intel Corporation
    Inventors: Tinku Acharya, Ping-Sing Tsai
  • Method of integrating a watermark into a compressed image
    Publication number: 20030194109
    Abstract: In accordance with one embodiment of the invention, a method of integrating at least a portion of a watermark into at least a portion of a compressed image includes the following. The at least a portion of the watermark is encoded. THe at least a portion the image is compressed. The at least a portion of the-encoded watermark and the at least a portion of the compressed image are combined. Of course, many other embodiments in accordance with the invention are included within the scope of the present invention.
    Type: Application
    Filed: June 9, 2003
    Publication date: October 16, 2003
    Inventors: Tinku Acharya, Kannan Raj
  • IMAGE PROCESSING ARCHITECTURE
    Publication number: 20030194129
    Abstract: A system includes a central processing unit, a bus and circuit. The central processing unit is coupled to the bus and segments an image into at least one text region and at least one graphics region. At least one of the circuit modules is associated with the processing of the text region(s), and at least one of the circuit modules is associated with the processing of the graphics region(s).
    Type: Application
    Filed: December 28, 1999
    Publication date: October 16, 2003
    Inventors: WERNER METZ, TINKU ACHARYA
  • Computationally fast and efficient DV to DVD transcoding
    Publication number: 20030194008
    Abstract: A method is described for quickly and efficiently transcoding digital video (DV) data to digital versatile disk (DVD) data. The method uses the baseline method for DV to DVD transcoding (i.e., full DV decoding, and DVD encoding), but eliminates the DCT and IDCT functions from the baseline method for I (Intraframe) coded frames; and further combines the inverse quantization (IQ) and inverse discrete cosine transformation (IDCT) functions of DV decoding, and the quantization (Q) and discrete cosine transformation (DCT) functions of DVD encoding into a single quantization function for I/P (Intraframe/Predictive) coded frames and P/P (Predictive/Predictive) coded frames.
    Type: Application
    Filed: April 11, 2002
    Publication date: October 16, 2003
    Inventors: Tinku Acharya, Hyun M. Kim, Hyung-Suk Kim, Jim Valerio, Thomas E. Walsh
  • Methodology for color correction with noise regulation
    Publication number: 20030194128
    Abstract: A method comprising determining an optimal color correction matrix accounting for both total noise variance and color reproduction error for a captured image; and correcting the colors of said captured image using said optimal color correction matrix.
    Type: Application
    Filed: June 4, 2003
    Publication date: October 16, 2003
    Inventors: Yap-Peng Tan, Tinku Acharya
  • Video motion estimation
    Patent number: 6633610
    Abstract: A system includes a processor and a memory. The memory stores a program to cause the processor to decompose a first frame of a video into a first set of frequency subbands. The first frame includes a first subimage. The program causes the processor to decompose a second frame of the video into a second set of frequency subbands and selectively compare portions of the first and second frequency subbands to locate a second subimage of the second frame. The second subimage is substantially identical to the first subimage.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: October 14, 2003
    Assignee: Intel Corporation
    Inventor: Tinku Acharya
  • Method of upscaling a color image
    Patent number: 6628827
    Abstract: A method of upscaling a color image in a first color space format to a second color space format may include the following. A color image in a first color space format may be transformed to a second color space format. At least one color plane of the transformed color image may be upscaled, the at least one color plane corresponding to one of the color space dimensions of the second color space format, to provide an upscaled color image in the second color space format. Of course, many other embodiments other than the preceding embodiment are also within the scope of the present invention.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: September 30, 2003
    Assignee: Intel Corporation
    Inventor: Tinku Acharya
  • Hardware efficient wavelet-based video compression scheme
    Patent number: 6628716
    Abstract: A method including intra-frame coding a first sequence of video data using Discrete Wavelet Transform; and inter-frame coding a second sequence of video data using Discrete Wavelet Transforms, the second sequence of data interspersed with the first sequence.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: September 30, 2003
    Assignee: Intel Corporation
    Inventors: Yap-Peng Tan, Tinku Acharya
  • Robust sequential approach in detecting defective pixels within an image sensor
    Patent number: 6625318
    Abstract: What is disclosed is a method comprising performing an observation on a sensor having a plurality of pixels, for each of the pixels that are unclassified, determining a score according to the observation, if the score for the each pixel satisfies a stopping condition, classifying the each pixel as being one of either defective or functional, and repeating the steps of performing, determining and classifying for any the pixels remaining unclassified after determining the score.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: September 23, 2003
    Inventors: Yap-Peng Tan, Tinku Acharya
  • Fuzzy distinction based thresholding technique for image segmentation
    Patent number: 6625308
    Abstract: Embodiments of a fuzzy distinction based thresholding technique for image segmentation are disclosed. In one embodiment, at least one signal value level of the image is determined along which to divide a fuzzy histogram, the histogram being based, at least in part, on the image. The signal value represents a value which produces a divided fuzzy histogram with an extreme value of one of distinctiveness and fuzziness based on a measure of multidimensional distance between measurement distributions and their respective complements. The image is then segmented using the at least one signal value.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: September 23, 2003
    Assignee: Intel Corporation
    Inventors: Tinku Acharya, Ajay K. Ray, A. K. V. Subba Rao
  • Method of performing huffman decoding
    Publication number: 20030174077
    Abstract: Embodiments of a method of performing Huffman decoding are disclosed. In one such embodiment, a data structure is employed, although, of course, the invention is not limited in scope to the particular embodiments disclosed.
    Type: Application
    Filed: March 18, 2003
    Publication date: September 18, 2003
    Inventors: Tinku Acharya, Ping-Sing Tsai
  • Method of integrating a watermark into a compressed image
    Patent number: 6608912
    Abstract: In accordance with one embodiment of the invention, a method is provided for integrating at least a portion of a watermark into at least a portion of a compressed image. The method of this embodiment includes encoding at least a portion of the watermark and compressing at least a portion of the image. The encoded watermark, or portion thereof, and the compressed image, or portion thereof, are combined. Of course, many other embodiments in accordance with the invention are included within the scope of the present invention.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: August 19, 2003
    Assignee: Intel Corporation
    Inventors: Tinku Acharya, Kannan Raj
  • Methodology for color correction with noise regulation
    Patent number: 6600833
    Abstract: A method comprising determining an optimal color correction matrix accounting for both total noise variance and color reproduction error for a captured image; and correcting the colors of said captured image using said optimal color correction matrix.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: July 29, 2003
    Assignee: Intel Corporation
    Inventors: Yap-Peng Tan, Tinku Acharya
  • Progressive two-dimensional (2D) pyramid filter
    Publication number: 20030126169
    Abstract: Embodiments of a progressive 2D pyramid filter bank are disclosed.
    Type: Application
    Filed: December 28, 2001
    Publication date: July 3, 2003
    Inventors: Wen-Shan Wang, Tinku Acharya
  • Method and apparatus for video bit-rate control
    Publication number: 20030123539
    Abstract: Embodiments for implementing video bit-rate control are disclosed.
    Type: Application
    Filed: December 28, 2001
    Publication date: July 3, 2003
    Inventors: Hyung-Suk Kim, Hyun Mun Kim, Tinku Acharya
  • WAVELET ZEROTREE CODING OF ORDERED BITS
    Publication number: 20030108247
    Abstract: A computer system includes a memory and a processor. The memory stores a program to cause the processor to provide wavelet coefficients that indicate an image. The processor represent each wavelet coefficient as a collection of ordered bits, and the processor codes the bits of each order to indicate zerotree roots that are associated with the order.
    Type: Application
    Filed: September 3, 1999
    Publication date: June 12, 2003
    Inventors: TINKU ACHARYA, NILOY J. MITRA, PRABIR K. BISWAS
  • Enhancing image compression performance by morphological processing
    Patent number: 6574374
    Abstract: A method including defining a morphological filtering operator designed to remove ringing artifacts in a decompressed image, and then applying that operator upon pixels of the decompressed image that belong to non-texture image regions.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: June 3, 2003
    Assignee: Intel Corporation
    Inventor: Tinku Acharya
  • Using an electronic camera to build a file containing text
    Patent number: 6563948
    Abstract: An embodiment of the invention is directed to a method of building an electronic file, using an electronic camera such as a digital camera, that captures 3-dimensional objects. A number of image data tiles that represent the images are generated by the camera. A number of text data tiles each containing text recognized in a corresponding one of the image data tiles is generated. The method includes searching for overlapping text in the text tiles, and pasting the text tiles in proper alignment into an electronic file.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: May 13, 2003
    Assignee: Intel Corporation
    Inventors: Yap-Peng Tan, Tinku Acharya, Werner Metz