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体验新版 GitCode,发现更多精彩内容 >>
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1ea1ff19
编写于
10月 11, 2017
作者:
A
Alexander Alekhin
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差异文件
Merge pull request #9827 from ryanfox:patch-2
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5ea8ea44
a96c5b5d
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doc/py_tutorials/py_calib3d/py_depthmap/py_depthmap.markdown
doc/py_tutorials/py_calib3d/py_depthmap/py_depthmap.markdown
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未找到文件。
doc/py_tutorials/py_calib3d/py_depthmap/py_depthmap.markdown
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1ea1ff19
...
...
@@ -5,14 +5,14 @@ Goal
----
In this session,
-
We will learn to create depth map from stereo images.
-
We will learn to create
a
depth map from stereo images.
Basics
------
In last session, we saw basic concepts like epipolar constraints and other related terms. We also
In
the
last session, we saw basic concepts like epipolar constraints and other related terms. We also
saw that if we have two images of same scene, we can get depth information from that in an intuitive
way. Below is an image and some simple mathematical formulas which prove
s
that intuition. (Image
way. Below is an image and some simple mathematical formulas which prove that intuition. (Image
Courtesy :
![
image
](
images/stereo_depth.jpg
)
...
...
@@ -24,7 +24,7 @@ following result:
\f
$x
\f
$ and
\f
$x'
\f
$ are the distance between points in image plane corresponding to the scene point 3D and
their camera center.
\f
$B
\f
$ is the distance between two cameras (which we know) and
\f
$f
\f
$ is the focal
length of camera (already known). So in short, above equation says that the depth of a point in a
length of camera (already known). So in short,
the
above equation says that the depth of a point in a
scene is inversely proportional to the difference in distance of corresponding image points and
their camera centers. So with this information, we can derive the depth of all pixels in an image.
...
...
@@ -35,7 +35,7 @@ how we can do it with OpenCV.
Code
----
Below code snippet shows a simple procedure to create disparity map.
Below code snippet shows a simple procedure to create
a
disparity map.
@code{.py}
import numpy as np
import cv2
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@@ -49,7 +49,7 @@ disparity = stereo.compute(imgL,imgR)
plt.imshow(disparity,'gray')
plt.show()
@endcode
Below image contains the original image (left) and its disparity map (right). As you can see, result
Below image contains the original image (left) and its disparity map (right). As you can see,
the
result
is contaminated with high degree of noise. By adjusting the values of numDisparities and blockSize,
you can get a better result.
...
...
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