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<p>在我的情况下,无论参数如何调整,OpenCV StereoBM深度贴图返回的数据都没有意义。在</p>
<p>我正在为一个涉及OpenCV的设计项目做研究,并使用立体视觉来生成深度图。我目前能够成功地加载我的两个网络相机和生成一个深度地图使用立体bm。然而,结果数据目前并不有用,正如下面的截图所示。所以我创建了一个小的python应用程序来帮助我优化StereoBM参数,但这没有帮助。在</p>
<p>我的问题是相机必须校准才能使用立体BM功能吗?在</p>
<p>如果没有,有什么方法可以帮助我改进结果(例如,提高分辨率、使用立体声BGM等)</p>
<p><a href="https://i.stack.imgur.com/VU83b.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/VU83b.png" alt="enter image description here"/></a></p>
<p><strong>编码</strong></p>
<pre><code>import cv2
import time
import numpy as np
from Tkinter import *
oldVal = 15
def oddVals(n):
global oldVal
n = int(n)
if not n % 2:
window_size.set(n+1 if n > oldVal else n-1)
oldVal = window_size.get()
minDispValues = [16,32,48,64]
def minDispCallback(n):
n = int(n)
newvalue = min(minDispValues, key=lambda x:abs(x-float(n)))
min_disp.set(newvalue)
# Display the sliders to control the stereo vision
master = Tk()
master.title("StereoBM Settings");
min_disp = Scale(master, from_=16, to=64, command=minDispCallback, length=600, orient=HORIZONTAL, label="Minimum Disparities")
min_disp.pack()
min_disp.set(16)
window_size = Scale(master, from_=5, to=255, command=oddVals, length=600, orient=HORIZONTAL, label="Window Size")
window_size.pack()
window_size.set(15)
Disp12MaxDiff = Scale(master, from_=5, to=30, length=600, orient=HORIZONTAL, label="Max Difference")
Disp12MaxDiff.pack()
Disp12MaxDiff.set(0)
UniquenessRatio = Scale(master, from_=0, to=30, length=600, orient=HORIZONTAL, label="Uniqueness Ratio")
UniquenessRatio.pack()
UniquenessRatio.set(15)
SpeckleRange = Scale(master, from_=0, to=60, length=600, orient=HORIZONTAL, label="Speckle Range")
SpeckleRange.pack()
SpeckleRange.set(34)
SpeckleWindowSize = Scale(master, from_=60, to=150, length=600, orient=HORIZONTAL, label="Speckle Window Size")
SpeckleWindowSize.pack()
SpeckleWindowSize.set(100)
master.update()
vcLeft = cv2.VideoCapture(0) # Load video campture for the left camera
#vcLeft.set(cv2.cv.CV_CAP_PROP_FRAME_WIDTH,420);
#vcLeft.set(cv2.cv.CV_CAP_PROP_FRAME_HEIGHT,340);
vcLeft.set(3,640) # Set camera width
vcLeft.set(4,480) # Set camera height
vcRight = cv2.VideoCapture(1) # Load video capture for the right camera
#vcRight.set(cv2.cv.CV_CAP_PROP_FRAME_WIDTH,420);
#vcRight.set(cv2.cv.CV_CAP_PROP_FRAME_HEIGHT,340);
firstTime = time.time() # First time log
totalFramesPassed = 0 # Number of frames passed
if vcLeft.isOpened() and vcRight.isOpened():
rvalLeft, frameLeft = vcLeft.read()
rvalRight, frameRight = vcRight.read()
else:
rvalLeft = False
rvalRight = False
while rvalLeft and rvalRight: # If the cameras are opened
rvalLeft, frameLeft = vcLeft.read()
rvalRight, frameRight = vcRight.read()
cv2.putText(frameLeft, "FPS : " + str(totalFramesPassed / (time.time() - firstTime)),(40, 40), cv2.FONT_HERSHEY_SIMPLEX, 0.8, 150, 2, 10)
cv2.imshow("Left Camera", frameLeft)
cv2.putText(frameRight, "FPS : " + str(totalFramesPassed / (time.time() - firstTime)),(40, 40), cv2.FONT_HERSHEY_SIMPLEX, 0.8, 150, 2, 10)
cv2.imshow("Right Camera", frameRight)
frameLeftNew = cv2.cvtColor(frameLeft, cv2.COLOR_BGR2GRAY)
frameRightNew = cv2.cvtColor(frameRight, cv2.COLOR_BGR2GRAY)
num_disp = 112 - min_disp.get()
stereo = cv2.StereoBM_create(numDisparities = num_disp, blockSize = window_size.get())
stereo.setMinDisparity(min_disp.get())
stereo.setNumDisparities(num_disp)
stereo.setBlockSize(window_size.get())
stereo.setDisp12MaxDiff(Disp12MaxDiff.get())
stereo.setUniquenessRatio(UniquenessRatio.get())
stereo.setSpeckleRange(SpeckleRange.get())
stereo.setSpeckleWindowSize(SpeckleWindowSize.get())
disparity = stereo.compute(frameLeftNew, frameRightNew).astype(np.float32) / 16.0
disp_map = (disparity - min_disp.get())/num_disp
cv2.imshow("Disparity", disp_map)
master.update() # Update the slider options
key = cv2.waitKey(20)
totalFramesPassed = totalFramesPassed + 1 # One frame passed, increment
if key == 27:
break
vcLeft.release()
vcRight.release()
</code></pre>