CAMERA EVALUATION VALUE MEASURING DEVICE AND CAMERA EVALUATION VALUE MEASURING METHOD

To provide a camera evaluation value measuring device capable of unitarily evaluating the superiority or inferiority of a camera by measuring the SNR while keeping the MTF at a predetermined level.SOLUTION: A camera evaluation value measuring device 1 includes signal processing means 10 for adjustin...

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Hauptverfasser:	MASAOKA KENICHIRO, HAYASHIDA TETSUYA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY MEASURING PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Zusammenfassung:	To provide a camera evaluation value measuring device capable of unitarily evaluating the superiority or inferiority of a camera by measuring the SNR while keeping the MTF at a predetermined level.SOLUTION: A camera evaluation value measuring device 1 includes signal processing means 10 for adjusting the degree of modulation of a video signal on the basis of parameters, MTF measuring means 11 for measuring the MTF in the video signal whose modulation factor has been adjusted, parameter control means 113 for controlling the parameters such that the MTF value becomes a predetermined value, and SNR measuring means 12 for measuring the SNR in the video signal whose modulation degree has been adjusted by the signal processing means 10 by controlling the parameters.SELECTED DRAWING: Figure 1 【課題】ＭＴＦを予め定めた所定レベルに揃えた状態でＳＮＲを測定することで、一元的にカメラの優劣を評価することが可能なカメラ評価値測定装置を提供する。【解決手段】カメラ評価値測定装置１は、映像信号の変調度をパラメータに基づいて調整する信号処理手段１０と、変調度が調整された映像信号においてＭＴＦを測定するＭＴＦ測定手段１１と、ＭＴＦ値が所定値になるようにパラメータを制御するパラメータ制御手段１１３と、パラメータを制御されて信号処理手段１０で変調度が調整された映像信号においてＳＮＲを測定するＳＮＲ測定手段１２と、を備える。【選択図】図１