IMAGE PROCESSING APPARATUS, MONITORING SYSTEM, AND IMAGE PROCESSING METHOD

• Main Authors: MATSUMOTO HIROYUKI, YOSHIKUNI SHINTARO, MIYAMOTO MASANARI
• Format: Patent
• Language: English; Japanese
• Published: 24.06.2021
• Subjects: ALARM SYSTEMS; DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ORDER TELEGRAPHS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; PUBLIC ADDRESS SYSTEMS; SIGNALLING; SIGNALLING OR CALLING SYSTEMS

To visually present to a user that, in what kind of place in an imaging area of a camera device, an unmanned flying body is detected and what kind of sound source exists in what other places in the same imaging area, without deteriorating visibility of the captured image of the camera device.SOLUTION: A sound source direction detection unit 34, on the basis of sound collected by a microphone array MAk, derives sound pressure that specifies magnitude of sound in an imaging area for each predetermined unit of pixels constituting a captured image in the imaging area. An output control section 35, in accordance with comparison between the sound pressure and a plurality of threshold values relating to the magnitude of sound, superimposes sound source visual information obtained by gradually converting the sound pressure into different visual images for each predetermined unit of the pixels constituting the captured image in the imaging area and displays them in a first monitor MN1. The sound source direction detection section 34, when any one of the sound source positions in the captured image in the imaging area is specified, derives the sound pressure for each value obtained by dividing a predetermined unit of pixels constituting a rectangular range including the sound source position by size ratio between the rectangular range and the captured image in the imaging area.SELECTED DRAWING: Figure 16 【課題】カメラ装置の撮像エリア内のどのような場所で無人飛行体が検知され、同じ撮像エリア内で他にどのような場所でどんな音源が存在しているかを、カメラ装置の撮像画像の視認性を劣化することなく、ユーザに対して視覚的に提示する。【解決手段】音源方向検知部３４は、マイクアレイＭＡｋにより収音された音声を基に、撮像エリアの音の大きさを特定する音圧を、撮像エリアの撮像画像を構成する画素の所定単位毎に導出する。出力制御部３５は、音圧と音の大きさに関する複数の閾値との比較に応じて、音圧を異なる視覚情報に段階的に変換した音源視覚情報を、撮像エリアの撮像画像を構成する画素の所定単位毎に重畳して第１モニタＭＮ１に表示する。また、音源方向検知部３４は、撮像エリアの撮像画像の中でいずれかの音源位置が指定されると、その音源位置を含む矩形範囲を構成する画素の所定単位を撮像エリアの撮像画像と矩形範囲とのサイズ比で除した値毎に、音圧を導出する。【選択図】図１６