[PYTHON/SKIMAGE] find_contours 함수 : 외곽선 검출하기

■ find_contours 함수를 사용해 외곽선을 검출하는 방법을 보여준다.

▶ 예제 코드 (PY)


import matplotlib
import matplotlib.pyplot as pp
import skimage.measure as measure
import skimage.io as io
import skimage.color as color
import skimage.filters as filters

matplotlib.use("TkAgg")

io.use_plugin("matplotlib")

imageNDArray = io.imread("source.png")

grayscaleImageNDArray = color.rgb2gray(imageNDArray)

sobelImageNDArray = filters.sobel(grayscaleImageNDArray)

contourList = measure.find_contours(sobelImageNDArray, 0.2)

figure, axes = pp.subplots()

axes.imshow(sobelImageNDArray, interpolation = "nearest", cmap = pp.cm.gray)

for n, contour in enumerate(contourList):
    axes.plot(contour[:, 1], contour[:, 0], linewidth = 2)

axes.axis("image")

axes.set_xticks([])
axes.set_yticks([])

pp.show()

import matplotlib

import matplotlib.pyplot as pp

import skimage.measure as measure

import skimage.io as io

import skimage.color as color

import skimage.filters as filters

matplotlib.use("TkAgg")

io.use_plugin("matplotlib")

imageNDArray = io.imread("source.png")

grayscaleImageNDArray = color.rgb2gray(imageNDArray)

sobelImageNDArray = filters.sobel(grayscaleImageNDArray)

contourList = measure.find_contours(sobelImageNDArray, 0.2)

figure, axes = pp.subplots()

axes.imshow(sobelImageNDArray, interpolation = "nearest", cmap = pp.cm.gray)

for n, contour in enumerate(contourList):

axes.plot(contour[:, 1], contour[:, 0], linewidth = 2)

axes.axis("image")

axes.set_xticks([])

axes.set_yticks([])

pp.show()

source.png