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Keypoint detection with trackability measurements

A key point and measurement technology, applied in image analysis, image enhancement, instrumentation, etc., can solve problems such as increased power consumption, inability to achieve tracking accuracy, and increased computing overhead

Inactive Publication Date: 2018-01-09
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, tracking accuracy may not increase if nearby keypoints exhibit relatively high similarity
Additionally, when using a large number of keypoints, as in many conventional schemes, computational overhead can increase, performance and / or application response time can be sub-optimal, and power consumption can increase without the accompanying Increase

Method used

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  • Keypoint detection with trackability measurements
  • Keypoint detection with trackability measurements
  • Keypoint detection with trackability measurements

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Embodiment Construction

[0025] The detailed description, set forth below in conjunction with the accompanying drawings, is intended as a description of various aspects of the invention and is not intended to represent the only aspects in which the invention may be practiced. Each aspect described in the present invention is provided only as an example or illustration of the invention, and it is not necessarily to be construed as preferred or advantageous over other aspects. The detailed description contains specific details for the purpose of providing a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the invention. Acronyms and other descriptive terms may be used for convenience and clarity only and are not intended to limit the scope of the inventi...

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Abstract

Disclosed embodiments facilitate keypoint selection in part by assigning a similarity score to each candidate keypoint being considered for selection. The similarity score may be based on the maximummeasured similarity of an image patch associated with a keypoint in relation to an image patch in a local image section in a region around the image patch. A subset of the candidate keypoints with thelowest similarity scores may be selected and used to detect and / or track objects in subsequent images and / or to determine camera pose.

Description

[0001] Cross References to Related Applications [0002] This application claims priority under 35USC 119 to U.S. Provisional Application No. 62 / 160,420, filed May 12, 2015, entitled "Keypoint Detection with Trackability Measurements," Said provisional application claims priority to U.S. non-provisional application Ser. No. 14 / 846,674, filed September 4, 2015, entitled "Keypoint Detection with Trackability Measurements," above Both applications are incorporated herein by reference in their entirety. technical field [0003] The present invention generally relates to apparatus and methods for object detection and tracking in a sequence of images. Background technique [0004] In computer vision and computer graphics, object tracking and / or recognition are frequently performed to facilitate various applications. For example, a mapping or navigation application may use objects recognized in the camera's field of view to determine the object's location and perform course corr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/46G06K9/52G06K9/62G06T3/00G06T7/20
CPCG06V10/62G06V10/757G06F18/22G06T3/18G06T7/20G06T2207/20048
Inventor 丹尼尔·瓦格纳金其勇
Owner QUALCOMM INC