Why can't we use Cartesian coordinates(x,y) instead of polar coordinates(r,theta) in Houghlines transformations ? Can any one clarify?
Cartesian coordinates in Houghlines
1.4k Views Asked by Hariprasad At
1
There are 1 best solutions below
Related Questions in PYTHON
- Angular Show All When No Filter Is Supplied
- Why does a function show up as not defined
- I count the time the user takes to solve my quiz using Javascript but I want the same time displayed on another page
- Set "More" "Less" font size
- Using pagination on a table in AngularJS
- How to sort these using Javascript or Jquery Most effectively
- how to fill out the table with next values in array with one button
- State with different subviews
- Ajax jQuery firing multiple time display event for the same result
- Getting and passing MVC Model data to AngularJS controller
Related Questions in OPENCV
- Angular Show All When No Filter Is Supplied
- Why does a function show up as not defined
- I count the time the user takes to solve my quiz using Javascript but I want the same time displayed on another page
- Set "More" "Less" font size
- Using pagination on a table in AngularJS
- How to sort these using Javascript or Jquery Most effectively
- how to fill out the table with next values in array with one button
- State with different subviews
- Ajax jQuery firing multiple time display event for the same result
- Getting and passing MVC Model data to AngularJS controller
Related Questions in COMPUTER-VISION
- Angular Show All When No Filter Is Supplied
- Why does a function show up as not defined
- I count the time the user takes to solve my quiz using Javascript but I want the same time displayed on another page
- Set "More" "Less" font size
- Using pagination on a table in AngularJS
- How to sort these using Javascript or Jquery Most effectively
- how to fill out the table with next values in array with one button
- State with different subviews
- Ajax jQuery firing multiple time display event for the same result
- Getting and passing MVC Model data to AngularJS controller
Related Questions in POLAR-COORDINATES
- Angular Show All When No Filter Is Supplied
- Why does a function show up as not defined
- I count the time the user takes to solve my quiz using Javascript but I want the same time displayed on another page
- Set "More" "Less" font size
- Using pagination on a table in AngularJS
- How to sort these using Javascript or Jquery Most effectively
- how to fill out the table with next values in array with one button
- State with different subviews
- Ajax jQuery firing multiple time display event for the same result
- Getting and passing MVC Model data to AngularJS controller
Related Questions in HOUGHLINES
- Angular Show All When No Filter Is Supplied
- Why does a function show up as not defined
- I count the time the user takes to solve my quiz using Javascript but I want the same time displayed on another page
- Set "More" "Less" font size
- Using pagination on a table in AngularJS
- How to sort these using Javascript or Jquery Most effectively
- how to fill out the table with next values in array with one button
- State with different subviews
- Ajax jQuery firing multiple time display event for the same result
- Getting and passing MVC Model data to AngularJS controller
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular # Hahtags
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
From what I can understand (quoted from wikipedia):
The simplest case of Hough transform is detecting straight lines. In general, the straight line
y = mx + b
can be represented as a point(b, m)
in the parameter space. However, vertical lines pose a problem. They would give rise to unbounded values of the slope parameterm
. Thus, for computational reasons, Duda and Hart proposed the use of the Hesse normal formr = x*cos(theta) + y*sin(theta)
, wherer
is the distance from the origin to the closest point on the straight line, andtheta
is the angle between thex
axis and the line connecting the origin with that closest point.A line can be detected by finding the number of intersections between curves.The more curves intersecting means that the line represented by that intersection have more points. In general, we can define a threshold of the minimum number of intersections needed to detect a line. This is what the Hough Line Transform does. It keeps track of the intersection between curves of every point in the image. If the number of intersections is above some threshold, then it declares it as a line with the parameters
(theta,r_(theta))
of the intersection point. (OpenCV docs)