subtraction image

基本解釋

The quality of the subtraction image is improved by the multi exposure.
采用多次曝光技術(shù)，提高了相減象的質(zhì)量。
The quality of the subtraction image was improved and computation time was reduced by selecting edge pixels as triangular control points.
通過(guò)計(jì)算圖像梯度信息，選取邊緣區(qū)域像素作為控制點(diǎn)，既改善減影圖像質(zhì)量，又提高運(yùn)算速度。
The results show that the phenomenon of mackling rails can be detected accurately, and also the category of mackling rails and the offset can also be determined by analysis of the subtraction image.
結(jié)果表明：此方法可以較準(zhǔn)確地檢測(cè)出重影現(xiàn)象，還可以通過(guò)分析減影圖來(lái)確定重影的種類(lèi)和偏移量。