Hy thanks Bob:)
Well i tried to solve that.
if you see this figure :http://i1069.photobucket.com/albums/u472/tina12354/anglefind-1.png
then cos(60) = base /hypo
1/2 = 100 / y
y = 200 cm
and sin(60) = perpendicular / gypo
sqrt(3) /2 = x / 200
sqrt(3)*100 = x
x = 173 cm.
Is it correct ?
So in think distance from cam to object is 173 cm.
Please correct me if i am wrong .
Actually i need to understand it mathematically .
Check out this link: http://robotics.stanford.edu/~scohen/lect02/lect02.html#eq:dil-scaling-j
Hy Bob, I need your help to understand it mathematically .
I am not capturing sense of Haar wavelet basis in figure
Could you please help me thanks
hy guys ,
I am trying to understand haar wavelet transform.
I have 3 images given below .
My problem is i do't understand figure in 3rd link.
I did not understand that how did he consider values of B , V , H and D.
Could any one please help me to understand it. Thanks
I am not understanding this eq in link : http://www.cs.mtu.edu/~shene/COURSES/cs3621/NOTES/geometry/geo-tran.html
, rotating a line Ax + By + C = 0 about the origin a degree brings it to a new equation:
(Acosa - Bsina)x' + (Asina + Bcosa)y' + C = 0
How did he get the equation ? ? ?
Also how did he use this equation in the above link .
as shown in figure this : http://imageshack.us/photo/my-images/853/2drottran.jpg/
How did he combine it to make it translation and rotation ?
Please help me to understand it thanks
Could any one tell me ?
Question : Homogeneous Coordinates System
In this link : http://www.cs.mtu.edu/~shene/COURSES/cs3621/NOTES/geometry/homo-coor.html
Its said that
Without the use of homogeneous coordinates system, it would be difficult to design certain classes of very useful curves and surfaces in computer graphics and computer-aided design
Which meant if we convert Cartesian coordinate to Homogeneous system then we could handle infinity.
Ok then let say we have two point (x ,y) , by converting to homogeneous we will get x/w , y/w then let say w = 0 then it would be infinity . then how are we dealing with infinity here ?
How are converting infinity . its same as cartesian form. but yes if the eq is in polynomial form then we could handle infinity .
How is it homogeneous then ?
Let say i have square like as shown in this link,.
In the square we have 4 sides . that meant perimeter is 3 + 7+ 3+ 7 = 15
My question is : what is the area of that square in the link .
In my understanding ,i think that square have 3 columns and 7 rows which mean the area is 3*7 = 21 pixels is area of that square .
Am i right ?
Please help me to understand it .thanks
Hy all ,
I have two question about area and perimeter .
So first Area :
* Area is the number of pixels within a region.
* And Area can be find as quadtree . but how ?
Say i have an image 10 * 10 . how can we find area by representating an image in form of quadtree ?
* How can we find area using polygon vertices ?
Second about Perimeter :
Perimeter is the number pixels in the boundary of shape .
let say i have an square of 4*4 . What's the perimeter of it ?
and let say i have triangle
*** in the stared triangle, What is the perimeter ?
Please help me to understand ti .
I need to know about these as soon as possible until tomorrow .
Expecting a good response thanks
"delete the vertex whose distance is less than 10 pixels when comparing with next vertex .then we will get one single point. "
What does it mean ?
Does it mean like
Say i have point A and point B
if(distance of A and B < 10) then delete which vertex A or B.?
What does mean by the above quoted statement ?
i dont understand how you get all the points in place in the first place. Who put down the 3 colored points?
Is the hand flat on to the camera? Are you neglecting the vanishing point or perspective and using the image as is?
Yes, I found convex hull of my hand contour or have image..
and those circles are convexity defects presented on hand.
And yes its hand from live video. and video is a sequence of images.
This is an image of convex hull of hand plus defect points : http://imageshack.us/photo/my-images/818/convexhullanddefect.png/
blue circles : start point
red circles : end point
green circles : depth points.
I want to define the finger counter from defect points .
Does any one have any idea to get the number of fingers .
if yes then please share ideas,
Unless we can get the problem down to something like post #6 we will not be able to say anything about the probabilty.
I will draw you a diagram that will hopefully explain what we need.
hmm ok i am waiting for your diagram then .
and yes thanks for helping me.