公开(公告)号：US10735700B2

公开(公告)日：2020-08-04

申请号：US16438876

申请日：2019-06-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Shashank Dabral ,  Mihir Narendra Mody ,  Denis Beaudoin ,  Niraj Nandan ,  Gang Hua

IPC: H04N9/04 ,  G06T3/40 ,  G06T5/00

Abstract: A method of de-mosaicing pixel data from an image processor includes generating a pixel block that includes a plurality of image pixels. The method also includes determining a first image gradient between a first set of pixels of the pixel block and a second image gradient between a second set of pixels of the pixel block. The method also includes determining a first adaptive threshold value based on intensity of a third set of pixels of the pixel block. The pixels of the third set of pixels are adjacent to one another. The method also includes filtering the pixel block in a vertical, horizontal, or neutral direction based on the first and second image gradients and the first adaptive threshold value utilizing a plurality of FIR filters to generate a plurality of component images.

公开(公告)号：US20200236405A1

公开(公告)日：2020-07-23

申请号：US16838132

申请日：2020-04-02

Applicant: Texas Instruments Incorporated

Inventor： Niraj Nandan ,  Mullangi Venkata Ratna Reddy

IPC: H04N19/80 ,  H04N19/86 ,  H04N19/423

Abstract: A de-blocking filter includes a reconstructed memory that is configured to store reconstructed pixels corresponding to a current macroblock of a video image to be filtered. The current macroblock includes a set of sub-blocks, each sub-block having horizontal edges and vertical edges. An internal pixel buffer in the de-blocking filter is configured to store pixels corresponding to the set of sub-blocks from the reconstructed memory, and to store partially filtered pixels corresponding to a set of partially filtered macroblocks. An edge order controller in the de-blocking filter is configured to load the pixels corresponding to the set of sub-blocks into a filter engine from the internal pixel buffer, to filter the set of sub-blocks, such that, at least one horizontal edge is filtered before filtering all vertical edges of the set of sub-blocks.

公开(公告)号：US10547859B2

公开(公告)日：2020-01-28

申请号：US15653561

申请日：2017-07-19

Applicant: Texas Instruments Incorporated

Inventor： Hetul Sanghvi ,  Mihir Narendra Mody ,  Niraj Nandan ,  Mahesh Madhukar Mehendale ,  Subrangshu Das ,  Dipan Kumar Mandal ,  Nainala Vyagrheswarudu ,  Vijayavardhan Baireddy ,  Pavan Venkata Shastry

IPC: H04N11/02 ,  H04N19/43 ,  H04N19/51

Abstract: A video hardware engine which support dynamic frame padding is disclosed. The video hardware engine includes an external memory. The external memory stores a reference frame. The reference frame includes a plurality of reference pixels. A motion estimation (ME) engine receives a current LCU (largest coding unit), and defines a search area around the current LCU for motion estimation. The ME engine receives a set of reference pixels corresponding to the current LCU. The set of reference pixels of the plurality of reference pixels are received from the external memory. The ME engine pads a set of duplicate pixels along an edge of the reference frame when a part area of the search area is outside the reference frame.

公开(公告)号：US20200027219A1

公开(公告)日：2020-01-23

申请号：US16585333

申请日：2019-09-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Hetul Sanghvi ,  Mihir Narendra Mody ,  Niraj Nandan ,  Anish Reghunath ,  Michael Peter Lachmayr

IPC: G06T7/246 ,  G06T7/20 ,  G06T7/269

Abstract: A computer vision system is provided that includes an image generation device configured to generate consecutive two dimensional (2D) images of a scene, and a dense optical flow engine (DOFE) configured to determine a dense optical flow map for pairs of the consecutive 2D images, wherein, for a pair of consecutive 2D images, the DOFE is configured to perform a predictor based correspondence search for each paxel in a current image of the pair of consecutive 2D images, wherein, for an anchor pixel in each paxel, the predictor based correspondence search evaluates a plurality of predictors to select a best matching pixel in a reference image of the pair of consecutive 2D images, and determine optical flow vectors for each pixel in a paxel based on the best matching pixel selected for the anchor pixel of the paxel.

公开(公告)号：US20190394472A1

公开(公告)日：2019-12-26

申请号：US16564871

申请日：2019-09-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mihir Narendra Mody ,  Niraj Nandan ,  Hideo Tamama

IPC: H04N19/176 ,  H04N19/14 ,  H04N19/82 ,  H04N19/86 ,  H04N19/117

Abstract: A method of de-blocking filtering a processed video is provided. The processed video includes a plurality of blocks and each block includes a plurality of sub-blocks. A current block of the plurality of blocks includes vertical edges and horizontal edges. The processed video further includes a set of control parameters and reconstructed pixels corresponding to the current block. A boundary strength index is estimated at the vertical edges and at the horizontal edges of the current block. The set of control parameters, the reconstructed pixels corresponding to the current block and partially filtered pixels corresponding to a set of adjacent sub-blocks are loaded. The vertical edges and the horizontal edges of the current block are filtered based on the boundary strength index and the set of control parameters such that a vertical edge of the current block is filtered before filtering at least one horizontal edge of the current block.

公开(公告)号：US20190295220A1

公开(公告)日：2019-09-26

申请号：US16438876

申请日：2019-06-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Shashank Dabral ,  Mihir Narendra Mody ,  Denis Beaudoin ,  Niraj Nandan ,  Gang Hua

IPC: G06T3/40 ,  H04N9/04

Abstract: A method of de-mosaicing pixel data from an image processor includes generating a pixel block that includes a plurality of image pixels. The method also includes determining a first image gradient between a first set of pixels of the pixel block and a second image gradient between a second set of pixels of the pixel block. The method also includes determining a first adaptive threshold value based on intensity of a third set of pixels of the pixel block. The pixels of the third set of pixels are adjacent to one another. The method also includes filtering the pixel block in a vertical, horizontal, or neutral direction based on the first and second image gradients and the first adaptive threshold value utilizing a plurality of FIR filters to generate a plurality of component images.

公开(公告)号：US10296393B2

公开(公告)日：2019-05-21

申请号：US15269957

申请日：2016-09-19

Applicant: Texas Instruments Incorporated

Inventor： Niraj Nandan ,  Hetul Sanghvi ,  Mihir Narendra Mody

IPC: G06F9/46 ,  G06F9/50 ,  G06F9/48 ,  G06F9/52 ,  G06F11/07

Abstract: A hardware thread scheduler (HTS) is provided for a multiprocessor system. The HTS is configured to schedule processing of multiple threads of execution by resolving data dependencies between producer modules and consumer modules for each thread. Pattern adaptors may be provided in the scheduler that allows mixing of multiple data patterns across blocks of data. Transaction aggregators may be provided that allow re-using the same image data by multiple threads of execution while the image date remains in a given data buffer. Bandwidth control may be provided using programmable delays on initiation of thread execution. Failure and hang detection may be provided using multiple watchdog timers.

公开(公告)号：US20190005656A1

公开(公告)日：2019-01-03

申请号：US15638123

申请日：2017-06-29

Applicant: Texas Instruments Incorporated

Inventor： Hetul Sanghvi ,  Mihir Narendra Mody ,  Niraj Nandan ,  Anish Reghunath ,  Michael Peter Lachmayr

IPC: G06T7/246 ,  G06T7/20 ,  G06T7/269

CPC classification number: G06T7/251 ,  G06T7/20 ,  G06T7/246 ,  G06T7/269 ,  G06T2207/10016 ,  G06T2207/10028 ,  G06T2207/30252 ,  G06T2207/30261

Abstract: A computer vision system is provided that includes an image generation device configured to generate consecutive two dimensional (2D) images of a scene, and a dense optical flow engine (DOFE) configured to determine a dense optical flow map for pairs of the consecutive 2D images, wherein, for a pair of consecutive 2D images, the DOFE is configured to perform a predictor based correspondence search for each paxel in a current image of the pair of consecutive 2D images, wherein, for an anchor pixel in each paxel, the predictor based correspondence search evaluates a plurality of predictors to select a best matching pixel in a reference image of the pair of consecutive 2D images, and determine optical flow vectors for each pixel in a paxel based on the best matching pixel selected for the anchor pixel of the paxel.

公开(公告)号：US09872044B2

公开(公告)日：2018-01-16

申请号：US14278697

申请日：2014-05-15

Applicant: Texas Instruments Incorporated

Inventor： Niraj Nandan ,  Mullangi Venkata Ratna Reddy

IPC: H04N19/80 ,  H04N19/423 ,  H04N19/86

CPC classification number: H04N19/80 ,  H04N19/423 ,  H04N19/86

Abstract: A de-blocking filter includes a reconstructed memory that is configured to store reconstructed pixels corresponding to a current macroblock of a video image to be filtered. The current macroblock includes a set of sub-blocks, each sub-block having horizontal edges and vertical edges. An internal pixel buffer in the de-blocking filter is configured to store pixels corresponding to the set of sub-blocks from the reconstructed memory, and to store partially filtered pixels corresponding to a set of partially filtered macroblocks. An edge order controller in the de-blocking filter is configured to load the pixels corresponding to the set of sub-blocks into a filter engine from the internal pixel buffer, to filter the set of sub-blocks, such that, at least one horizontal edge is filtered before filtering all vertical edges of the set of sub-blocks.

公开(公告)号：US09430393B2

公开(公告)日：2016-08-30

申请号：US14583020

申请日：2014-12-24

Applicant: Texas Instruments Incorporated

Inventor： Prashant Dinkar Karandikar ,  Mihir Mody ,  Hetul Sanghavi ,  Vasant Easwaran ,  Prithvi Y. A. Shankar ,  Rahul Gulati ,  Niraj Nandan ,  Subrangshu Das

IPC: G06F12/08 ,  G06F3/06

CPC classification number: G06F12/0862 ,  G06F3/06 ,  G06F12/08 ,  G06F12/0888 ,  G06F2212/601 ,  G06F2212/602

Abstract: A system includes first and second processing components, a qualified based splitter component, a first and second configurable cache element and an arbiter component. The first data processing component generates a first request for a first portion of data at a first location within a memory. The second data processing component generates a second request for a second portion of data at a second location within the memory. The qualifier based splitter component routes the first request and the second request based on a qualifier. The first configurable cache element enables or disables prefetching data within a first region of the memory. The second configurable cache element enables or disables prefetching data within a second region of the memory. The arbiter component routes the first request and the second request to the memory.

Abstract translation: 系统包括第一和第二处理组件，基于限定的分离器组件，第一和第二可配置高速缓存元件和仲裁器组件。 第一数据处理组件在存储器内的第一位置处生成对数据的第一部分的第一请求。 第二数据处理组件在存储器内的第二位置产生第二数据部分的第二请求。 基于限定符的分离器组件基于限定符路由第一请求和第二请求。 第一可配置缓存元件启用或禁用在存储器的第一区域内的预取数据。 第二可配置高速缓存元件在存储器的第二区域内启用或禁用预取数据。 仲裁器组件将第一个请求和第二个请求路由到内存。