PROBLEM TO BE SOLVED: To detect a moving body at a high speed with high accuracy by use of a compressed image stream.SOLUTION: An object detection apparatus receives an input of a compressed image stream, which is image data compression-coded by block in a bit-stream format, extracts predetermined compression coding information indicating characteristics of a compressed image, from a block included in the compressed image stream, and determines whether the block is a candidate block including at least a part of a specific object, on the basis of the compression coding information. The object detection apparatus specifies a candidate area of a predetermined size including the candidate block, in a decoded image decoded from the compressed image stream, calculates a predetermined feature quantity from image data in the candidate area, and determines whether the candidate area includes at least a part of the specific object, on the basis of the feature quantity.SELECTED DRAWING: Figure 1

    【課題】圧縮画像ストリームを用いて高速かつ高精度に移動体を検出する。【解決手段】物体検出装置は、ビットストリーム形式によってブロック単位で圧縮符号化された画像データである圧縮画像ストリームの入力を受け付け、該圧縮画像ストリームに含まれるブロックから、圧縮後の画像の特徴を示す所定の圧縮符号化情報を抽出し、該圧縮符号化情報に基づいて、該ブロックが、該特定の物体の少なくとも一部を含む候補ブロックであるか否か、を判定する。物体検出装置は、該圧縮画像ストリームから復号された復号画像において、該候補ブロックを含む所定サイズの候補領域を特定し、該候補領域の画像データから所定の特徴量を算出し、該特徴量に基づいて該候補領域が該特定の物体の少なくとも一部を含むか否かを判定する。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    OBJECT DETECTION APPARATUS


    Additional title:

    物体検出装置


    Contributors:

    Publication date :

    2016-03-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen



    Object detection apparatus and object detection method

    MATSUNAGA SHOGO | European Patent Office | 2021

    Free access

    OBJECT DETECTION APPARATUS AND OBJECT DETECTION METHOD

    MATSUNAGA SHOGO | European Patent Office | 2019

    Free access

    OBJECT DETECTION APPARATUS AND OBJECT DETECTION METHOD

    TAKAKI RYO | European Patent Office | 2019

    Free access

    OBJECT DETECTION APPARATUS AND OBJECT DETECTION METHOD

    MATSUNAGA SHOGO | European Patent Office | 2017

    Free access

    OBJECT DETECTION APPARATUS AND OBJECT DETECTION METHOD

    UCHIDA NAOHIDE / SHIRAI NORIAKI / ISHIGAMI HIROTAKE | European Patent Office | 2016

    Free access