Objective To study whether it can be directly compared that one of X ray pictures taken in different period and exposure conditions with one processed by histogram normalization.
目的探讨不同时期、不同条件的X线片图像做直方图归一化处理后能否直接进行灰度或颜色的对比。
A chemical controlling suitable period weeds in soybean field is simulated based on pixel histogram method to determine centor row width of crop-row and to recognize inter-row weeds.
以化学防除适期豆田杂草为研究对象，根据条播作物豆田作物行的间距相对固定的位置特征，利用像素直方图法确定作物行的中心行宽并识别行间杂草。
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