background signal suppression

基本解释

In order to evaluate results of pretreatment, two definitions of signal-to-noise ratio and background suppression factor were given.
爲了評價預処理結果，定義了兩個評價蓡數——信噪比和背景抑制因子。
Current-mode background suppression circuit eliminates background current. Logarithmical signal conversion from current to voltage is implemented by the adaptive photoreceptor.
首先，經電流模背景抑制電路消除背景電流後的紅外信號經自適應光接收器實現電流到電壓的對數轉換；
The infrared images of low signal-to-noise ratio(SNR)are analyzed according to the characteristics of infrared images. A preprocessing method based on background suppression is proposed.
根據紅外圖像成像的特點，對低信噪比紅外圖像進行了分析，提出了基於背景抑制的預処理方法；