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node_modules | ||
private.typ | ||
target | ||
*.jpg |
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#set text(lang: "zh", cjk-latin-spacing: auto, font: "Noto Serif CJK SC") | ||
#set page(numbering: "1", margin: (left: 1.4cm, right: 1.9cm)) | ||
#show figure.caption: set text(font: "Zhuque Fangsong (technical preview)") | ||
#show "。": "." | ||
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= 第九章作业 | ||
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1. 较小的方块在腐蚀后完全消失,而较大的方块超过了结构元大小这一阈值,并且和结构元形状一致,没有被完全腐蚀,所以能够保留下来。 | ||
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2. 可以,因为两张图片都是类似的互不接触的圆点。 | ||
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#figure(caption: "处理结果", image("9-50/result.svg", height: 6cm, width: 125%)) | ||
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代码如下: | ||
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#raw(read("9-50/p2.m"), lang: "m") | ||
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3. #set enum(numbering: "(a)") | ||
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+ 找出所有触碰到图像边界的粒子,可通过在图像边缘一圈的值为 1 的像素开始,寻找 4 连通分量。 | ||
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+ 可以根据面积确定。先找一个合适的面积值 $A$ 和标准差 $sigma$,查找所有连通分量并分别计算面积 $A_i$,若 $A_i$ 在 $A plus.minus 3 sigma$ 外可认为是仅彼此重叠的颗粒; | ||
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+ 在 $A plus.minus 3 sigma$ 内的连通分量可认为是仅彼此重叠的颗粒。 | ||
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4. 将图像二值化处理,然后与取反后的标准图像进行 AND 操作,留下的差异区域为 1。然后根据连通分量将这些差异区域分组,并根据连通分量的数量、大小、形状等特征判断垫圈是否合格。如果连通分量为 0 说明垫圈非常完美,个数越多、大小越大说明质量越低,以此类推。 |