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Reducing object detection time by utilizing space localization of features

An object detection, object technology, applied in the field of object recognition

Inactive Publication Date: 2015-10-28
QUALCOMM INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Meanwhile, mobile devices that include cameras have emerged, but such mobile devices may have limited user interfaces for entering text or otherwise interfacing with the mobile device

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  • Reducing object detection time by utilizing space localization of features
  • Reducing object detection time by utilizing space localization of features
  • Reducing object detection time by utilizing space localization of features

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Embodiment Construction

[0019] In general, this disclosure describes techniques for object recognition in images. These techniques reduce the computational complexity of identifying objects in images and support early exit from the object detection pipeline. Rather than extracting feature descriptors after analyzing the entire image, the techniques of the present invention allow for detection of features within a tile (ie, a subset of the image). After processing each tile, the number of detected features may be compared to a threshold and then compared to an object database. Tiling can be applied to one or more octets. In general, each octet corresponds to a particular size (eg, pixel resolution) of an image. For a given octet, the input image may be scaled to the size associated with the resolution. The spatial segmentation techniques described herein may be combined with scale-based feature extraction as described in co-pending US Patent Application Serial No. 13 / 193,294, filed July 28, 2011. ...

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Abstract

In one example, a method for exiting an object detection pipeline includes determining, while in the object detection pipeline, a number of features within a first tile of an image, wherein the image consists of a plurality of tiles, performing a matching procedure using at least a subset of the features within the first tile if the number of features within the first tile meets a threshold value, exiting the object detection pipeline if a result of the matching procedure indicates an object is recognized in the image, and presenting the result of the matching procedure.

Description

technical field [0001] The present invention relates to image processing systems, and more particularly to object recognition in images. Background technique [0002] Visual search in the context of a computing device or computer refers to techniques that enable a computer or other device to provide identifying information for objects in one or more images. The recent focus on visual search has resulted in algorithms that enable computers to identify partially occluded objects and / or features under a wide variety of changing image conditions, including noise and changes in lighting. Meanwhile, mobile devices including cameras have emerged, but such mobile devices may have limited user interfaces for entering text or otherwise interfacing with the mobile devices. Developers of mobile devices and mobile device applications have sought to utilize the mobile device's camera to enhance user interaction with the mobile device. [0003] To illustrate one enhancement, a user of a ...

Claims

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Application Information

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IPC IPC(8): G06K9/62G06K9/68
CPCG06K9/46G06K9/6211G06K9/6857G06V10/40G06V30/2504G06V10/757
Inventor 拉古拉曼·克里希纳穆尔蒂盖瑞·杰拉尔德·麦格拉斯博扬·弗尔采利
Owner QUALCOMM INC
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