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    文件類型: .zip
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    發(fā)布日期: 2021-06-05
  • 語言: Python
  • 標(biāo)簽: python??GrabCut??分水嶺??

資源簡介

python版本的GrabCut前景分割和分水嶺分割,同時也有深度估計

資源截圖

代碼片段和文件信息

import?cv2
import?numpy?as?np
from?matplotlib?import?pyplot?as?plt

def?to_uint8(?data?)?:
????#?maximum?pixel
????latch?=?np.zeros_like(?data?)
????latch[:]?=?255
????#?minimum?pixel
????zeros?=?np.zeros_like(?data?)

????#?unrolled?to?illustrate?steps
????d?=?np.maximum(?zeros?data?)
????d?=?np.minimum(?latch?d?)

????#?cast?to?uint8
????return?np.asarray(?d?dtype=“uint8“?)

def?drawlines(img1img2linespts1pts2):
??‘‘‘?img1?-?image?on?which?we?draw?the?epilines?for?the?points?in?img2
??????lines?-?corresponding?epilines?‘‘‘
??print?img1.shape
??rc?ch?=?img1.shape
??clr1?=?cv2.pyrDown(cv2.imread(‘./images/stacked1.png‘?0))
??clr2?=?cv2.pyrDown(cv2.imread(‘./images/stacked2.png‘?0))
??for?rpt1pt2?in?zip(linespts1pts2):
??????color?=?tuple(np.random.randint(02553).tolist())
??????x0y0?=?map(int?[0?-r[2]/r[1]?])
??????x1y1?=?map(int?[c?-(r[2]+r[0]*c)/r[1]?])
??????clr1?=?cv2.line(clr1?(x0y0)?(x1y1)?color1)
??????clr1?=?cv2.circle(clr1tuple(pt1)5color-1)
??????clr2?=?cv2.circle(clr2tuple(pt2)5color-1)
??????return?clr1?clr2

img1?=?to_uint8(cv2.pyrDown(cv2.imread(‘./images/stacked1.png‘?cv2.COLOR_BGR2GRAY)))??#queryimage?#?left?image
img2?=?to_uint8(cv2.pyrDown(cv2.imread(‘./images/stacked2.png‘?cv2.COLOR_BGR2GRAY)))?#trainimage?#?right?image

sift?=?cv2.xfeatures2d.SIFT_create()
?
#?find?the?keypoints?and?descriptors?with?SIFT
kp1?des1?=?sift.detectAndCompute(img1None)
kp2?des2?=?sift.detectAndCompute(img2None)

#?FLANN?parameters
FLANN_INDEX_KDTREE?=?0
index_params?=?dict(algorithm?=?FLANN_INDEX_KDTREE?trees?=?5)
search_params?=?dict(checks=50)
?
flann?=?cv2.FlannbasedMatcher(index_paramssearch_params)
matches?=?flann.knnMatch(des1des2k=2)
?
good?=?[]
pts1?=?[]
pts2?=?[]
?
#?ratio?test?as?per?Lowe‘s?paper
for?i(mn)?in?enumerate(matches):
????if?m.distance?????????good.append(m)
????????pts2.append(kp2[m.trainIdx].pt)
????????pts1.append(kp1[m.queryIdx].pt)

pts1?=?np.int32(pts1)
pts2?=?np.int32(pts2)
F?mask?=?cv2.findFundamentalMat(pts1pts2cv2.FM_LMEDS)
?
#?We?select?only?inlier?points
pts1?=?pts1[mask.ravel()==1]
pts2?=?pts2[mask.ravel()==1]

#?Find?epilines?corresponding?to?points?in?right?image?(second?image)?and
#?drawing?its?lines?on?left?image
lines1?=?cv2.computeCorrespondEpilines(pts2.reshape(-112)?2F)
lines1?=?lines1.reshape(-13)
img5img6?=?drawlines(img1img2lines1pts1pts2)

#?Find?epilines?corresponding?to?points?in?left?image?(first?image)?and
#?drawing?its?lines?on?right?image
lines2?=?cv2.computeCorrespondEpilines(pts1.reshape(-112)?1F)
lines2?=?lines2.reshape(-13)
img3img4?=?drawlines(img2img1lines2pts2pts1)

plt.subplot(121)plt.imshow(img5)
plt.subplot(122)plt.imshow(img3)
plt.show()

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????2737??2016-11-15?15:49??分割\depth.py
?????文件????????1229??2016-11-15?15:49??分割\disparity_video.py
?????文件?????????669??2016-11-15?15:49??分割\grabcut.py
?????文件?????????487??2016-11-15?15:49??分割\segmentation.py
?????文件????????1007??2016-11-15?15:49??分割\watershed.py
?????目錄???????????0??2018-06-09?10:45??分割\

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