Texas Instruments Corporation

Samsung Electronics Co., Ltd.

Anurag Mithalal Jain

Soyeb Noormohammed Nagori

Naveen Srinivasamurthy

Arun Shankar Kudana

Uday Pudipeddi Kiran

Pramod Kumar Swami

Venugopala Krishna Madumbu

Hyunhee Park

Sungoh Kim

Yongman Lee

Pavan Venkata Shastry

Sreevatsa Dwaraka Bhamidipati

Venkat Ramana Peddigari

Bindigan Hariprasanna Pawan Prasad

Sunand Mittal

Ravindranath Ramalingaiah Munnan

Kwangyoung Kim

Ratna M V Reddy

David Gottardo

Jacques Michel Bride

Jae Hun Cho

Gayathri Ramanujam

Phanish Hanagal Srinivasa Rao

Loka Sudharsan Reddy

Divya Patidar

Venkata Ravisankar Jayanthi

Raghavendra Kudva

Rajat Agarwal

Ashish Ranjan

Joy Dutta

A video encoder receives a minimum number of bits (MIN) and a maximum number of bits (MAX) to be used to encode a segment of a sequence of image frames, the segment including a set of pictures contained in the sequence of image frames. The video encoder encodes the set of pictures using a total number of bits greater than the minimum number of bits (MIN), and not exceeding the maximum number of bits (MAX). Thus, the transmission bit-rate of the video encoder can be constrained to lie within a maximum and minimum rate. In an embodiment, the constraints are enforced over relatively short time intervals.

Transmission bit-rate control in a video encoder

Several methods and systems for encoding of multimedia pictures are disclosed. In an embodiment, an occupancy level of a coded picture buffer (CPB) associated with a hypothetical reference decoder (HRD) is estimated at an instant of removal of an access unit corresponding to a multimedia picture from the CPB for decoding the access unit. A number of bits for encoding the multimedia picture is allocated based on the estimated occupancy level of the CPB. The multimedia picture is encoded based on the allocated number of bits.

Methods and systems for encoding of multimedia pictures

A method and apparatus for storing, processing and reconstructing full resolution image out of sub band encoded images are provided. The method of rendering high resolution images based on sub-band encoded data of an image includes steps of performing downscaling of a selected image, creating a time-stamped downscaled image, extracting sub-band information associated with the selected image at one instance in time, compressing the downscaled image and the sub-band information, and decompressing and adding the sub-band information with extrapolated downscaled image to reconstruct and render high resolution image.

Method and apparatus for storing, processing and reconstructing full resolution image out of sub band encoded images

An image processing method, including preparing a first image; designating at least one region of interest (ROI) in the first image, generating restoration data; and generating a second image using the restoration data, the second image corresponding to the ROI, wherein a resolution of the second image is higher than a resolution of a region corresponding to the ROI in the first image.

Image processing apparatus and image processing method

This invention calculates motion vectors during video encoding for sub-sampled data using a hierarchical search. The motion vector calculation employs a prior original frame as the reference frame rather than a reconstructed frame according to the prior art.

Hierarchical motion estimation using original frame for sub-sampled reference

This invention is a method of video encoding. The number N macroblocks stored in a temporary buffer depends upon an estimated number of motion vectors. N macroblocks of current and prior frame data is transferred to the temporary buffer. The invention determines for each macroblock whether to be inter frame predicted or intra frame predicted. The inter and intra macroblocks are separately encoded based upon this determination and stored in an output buffer. Output macroblocks are output from the output buffer in raster scan order. This technique permits the process to loop over differing number of macroblocks in differing parts of the encoding process. Entropy encoding complexity from separating inter and intra macroblock encoding is avoided by separating a symbol generation phase from an encoding phase.

Video encoder software architecture for VLIW cores incorporating inter prediction and intra prediction

A half sample and quarter sample pixel value interpolation calculation classifies a set of all possible half sample and quarter sample pixel value interpolation calculations into a plurality of interpolation types. A function kernel for each interpolation type includes a half sample pixel and all quarter sample pixels whose value calculation depend on a value of said half sample pixel value. The correct function kernel is called invoking the corresponding value interpolation calculation. The function kernels operate iteratively over a plurality of macroblocks of at least two macroblock sub-partition sizes. The calculation of dependent quarter sample pixel values preferably employs a packed average instruction.

FIR-based interpolation in advanced video codecs on VLIW processor

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Bengaluru, India

Anurag Mithalal Jain