Methods and system for efficient processing of generic geometric correction engine

US11599975B2 · kind B2 · utility

Assignee

• TEXAS INSTRUMENTS INCORPORATED · US

Inventors

• Rajasekhar Reddy Allu · Plano, US
• Niraj Nandan · Plano, US
• Mihir Narendra Mody · Kanchinakote, IN
• Gang Hua · White Plains, US
• Brian Chae · Plano, US
• Shashank Dabral · Allen, US
• Hetul Sanghvi · Bengaluru, IN
• Vikram VijayanBabu Appia · Dallas, US
• Sujith Shivalingappa · Bengaluru, IN

Key dates

• Filing date: Jul 16, 2020
• Grant date: Mar 7, 2023
• Expiry date: Jun 6, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2210/12
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

An apparatus and method for geometrically correcting a distorted input frame and generating an undistorted output frame. The apparatus includes an external memory block that stores the input frame, a counter block to compute output coordinates of the output frame for a region based on a block size of the region, a back mapping block to generate input coordinates corresponding to each of the output coordinates, a bounding module to compute input blocks corresponding to each of the input coordinates, a buffer module to fetch data corresponding to each of the input blocks, an interpolation module to interpolate data from the buffer module and a display module that receives the interpolated data for each of the regions and stitch an output image. The method includes determining the size of the output block based on a magnification data.