Image Definition and 996 Threads

Hi all, A question: Is it possible to split a single image then use the two identical images to cancel each other resulting in a canceled 'image'? If so, can anyone suggest a simple optical method that can be used to achieve this in real-time? Perhaps creating an anti-phase of the original...

Homework Statement Let \phi: R \to S be a ring homomorphism from R to S. What can you say about \phi if its image \text{im}\phi is an ideal of S? What can you say about \phi if its kernel \ker \phi is a subring (w unity) of R? The Attempt at a Solution I think the second one...

Hi all, I'm working on some image analysis as a part of my research, specifically trying to match images. The method I am using transforms the image into the frequency domain and then applies a band pass (or mesa) filter to eliminate noise and the dc component of the image. I have never...

I need to find the bestfit distribution for this. I'm using excel, so I need to be able to use xcel to graph it. [PLAIN]http://img831.imageshack.us/img831/8770/unledcwx.png

Homework Statement Homework Equations Thin lens equation: 1/f = 1/s + 1/s' The Attempt at a Solution I tried to define image and object distances for both instances and equate them. Didn't work out :( Any help is welcome!

Homework Statement An object is locted 15cm infront of a convae lends with a focal length of 10cm. use ray tracing to determine the location of the image. try to draw to scale i)is the image upright or inverted? ii)is the image real or virtual? iii)use your ray-tracing diagram to...

I just link my microscope (Olympus CX31) with CCD (Sony), the staff 's company installed "Ulead program" in computer linked with CCD to capture the picture from microcope. The problem is when the picture shown in the computer, it is already too enlarged that we can't see the wider view as we...

it might sound a bit hilarious.. some where i read about image processing where on the original image some operations were done (dealing with something related to convolution may be ) and say image A was obtained.. again another set of operations ( dealing with Fourier transform on the image...

I'm sure everyone here will be familiar with the usual graphic or image used to show what an atomic nucleus might look like. Here are two typical images used today; --------- Everybody has seen those images. But in reality, we have no picture of an atomic nucleus, we can only draw the...

I find interesting a significant nearby astronomical object whose existence is only inferred.

Homework Statement Consider a continuous function f:\mathbb{R}\rightarrow\mathbb{R} and an arbitrary open U\subset\mathbb{R}. Show that the inverse image under f of U, f^{-1}[U], is open.Homework Equations The definitions of open sets and continuityThe Attempt at a Solution Pick an arbitrary...

I am looking for something on the lines of this - http://www.tineye.com/ . i.e a site where one uploads an image and it gives back similar images from other websites. (note - I am not asking for face recognition or similar thing , that I guess would be a big demand . I just wanted to find...

Homework Statement Find/sketch the image of the function under the transform w = 1/z Homework Equations x=-1 The Attempt at a Solution So, I decided to take the mapping 1/z as 1/(x+iy) For x=-1: \begin{align} w=\frac{1}{z}&=&\frac{1}{x+iy}&=&\frac{-1-iy}{1+y^2} \end{align} Getting u in...

Homework Statement From Calculus we know that, for any polynomial function f : R -> R of degree <= n, the function I(f) : R -> R, s -> ∫0s f(u) du, is a polynomial function of degree <= n + 1. Show that the map I : Pn -> Pn+1; f -> I(f), is an injective linear transformation, determine...

When an object is placed at the focal point of a convex lens, the image is formed at infinity, yet it is called a highly magnified image. The fact being that after passing through the convex lens the rays run parallel or rather as a beam. My question is that if the image is formed at...

Homework Statement A man holds a double-sided spherical mirror so that he is looking directly into its convex surface, 47.4 cm from his face. The magnification of the image of his face is +0.18. What will be the image distance when he reverses the mirror (looking into its concave surface)...

Homework Statement A converging lens of focal length 0.246 m forms a virtual image of an object. The image appears to be .933 m from the lens on the same side as the object. What is the distance between the object and the lens? Homework Equations 1/f = 1/di + 1/do Since the image is...

I know this is probably a simple question but I want to make a program that uses an animation but don't know how to display an image like a jpeg in a program. I found a couple answers to this online but don't really know what's going on in the code. Would someone mind writing some sample code...

length. I was asked to find the image and the object distance. I didnt think it was possible till i found this M=h'/h=-q/p : I knew this q=-ph'/h : I understood how they did this 1/p+1/q=1/f : I knew this 1/p+1(-ph'/h)=-1/f : This i understood also, but how they came up with...

Homework Statement Let Ψ: Mat2x2(R) -> Mat2x2(R) be defined as: [a,b;c,d] -> [a+b, a-c; a+c, b-c] Find a basis for the image of Ψ. Homework Equations None, AFAIK. The Attempt at a Solution I started by using the standard basis, B, for Mat2x2(R) to get [u]B [with u in Mat2x2(R)] as...

how can we say that the image formed by a concave mirror is always real if object is virtual? please help

Homework Statement A microscope has an eyepiece of focal length 2.50 cm and an objective of focal length 4.60 cm. The eyepiece produces a virtual image at the viewer's near point (25.0 cm from the eye). a) How far from the eyepiece is the image formed by the objective? ANswer: 2.27 cm...

Hi all, is there a way that one goes about solving for the image of a function in a purely analytical sense without having to use any sort of graphing calculator? btw I'm abit confused about the concept of image - it seems it is not the range which is what i thought it was :S? can someone...

Hi, the question is for the transformation : T: M2,3 -> P2 T ( A11 A12 A13) = (A11 + A13)x^2 + (A21 - A22)x + A23 ( A21 A22 A23) Are the following in the linear transformation? W1=x^2 + 2x + 1 W2=x-2 Attempt: I figured that w would be in image if there exists.. (A11 + A13)x^2 + (A21 -...

Plz help me to find "Digital Image Processing" by Rafael C. Gonzalez and Richard E. Woods Thank you

Hi can someone please explain to me in simple english what the image of a function is... People have told me it is the range, however i have heard technically it is not the range but it is similar? Thanks for your time cheers, Lucky

Homework Statement Let phi be a homomorphism from the group G under * to the group G' under #, where G = <a>, the cyclic group generated by a. Show that phi is completely determined by the image of the generator a of G. Homework Equations Phi is a homomorphism, therefore phi(x*y) =...

hello everyone, as u know there are many image hosting websites out there. the two worth mentioning when it comes to sharing are flickr and imageshack. they both are very simple but imageshack (whch i started using some time back) is more simple when it comes to sharing. which service do you...

Homework Statement I've been browsing the Internet but can't find a straightforward explanation for a procedure on how to find the image and kernel of a matrix. Question: Find a basis of the image of A, and a basis of the kernel of A. \[ A = \left[ {\begin{array}{ccc} 1 & 2 & 1 \\...

These pictures are incredible. http://www.wellcomeimageawards.org

Hello. Has anybody ever drawn an 11-dimensional cube (I mean, representation of 11-D cube in 2D)? Or does anybody have a picture of it? Thanks.

Hello, Suppose I have the function x = A*log(B*y) where A and B are constants, y is the height of a row of pixels, and x is how much that row of pixels needs to be translate right or left. How would you recommend incorporating this into code as to minimize distortion? I have tried...

Homework Statement A point charge is located outside of a grounded conducting sphere. Find the potential outside the sphere. This problem was a solved example. It was solved by placing an image charge inside the sphere so that the potential from the charge outside the sphere would cancel...

Homework Statement (a)Find the Kernel and Image of each of the following linear transformations. ... (iv)\varphi : V\rightarrow V given \varphi(f)=f'+f where V is the subspace of the space of smooth functions \Re\rightarrow\Re spanned by sin and cos, and f' denotes the derivative. ...

There seems to be a good source here: http://www.cs.cf.ac.uk/Dave/AI2/node194.html But my problem is understanding the summation. What I am trying to do is calculate ellipticites and orientation angles of images using their second order moments of inertia. My images are in matrix...

Homework Statement Let T be an invertible linear transformation from R2 to R2. Let P be a parallelogram in R2. Is the image of P a parallelogram as well? Explain. P is a parallelogram in the first quadrant without any specified points. Homework Equations The Attempt at a...

So upon introduction to Euler's phi function, we can see that \phi (1) = 1 and \phi (2) = 1, where it turns out that these are in fact the only numbers in N that map to 1. Now what I'm wondering is if there is some general way to find the inverse image of numbers in the image of phi? Also...

Homework Statement An object is at distance s from a thin glass lens of focal length f. The lens is surrounded by air. The image is at distance s' from the lens. Draw a graph of s' versus s. Explain physically why the graph varies as it does. Homework Equations I think I am...

im trying to understand how photons allow the brain to create an image. I understand that light is made up of photons. These photons are emitted from an energy source and reflect off an object and hit the retina which produces electrical signals that the brain creates an image from. What i don't...

I have the below figure I took from my textbook from a section that explains how to calculate the capacitance of two transmission wires using image line charges. My question is that if I add two more conductors like shown below, how would it affect the line image charges? I'm not sure...

I've given a function where f: R->R, and need to determine an image(or range): f(x) = x/(1+|x|) I've pretty sure the image is R, but I'm not positive: Heres my attempt: y/1 = x/(1+|x|) y(1+|x|) = x y+ y|x| = x y|x| = x - y... I'm kinda stuck here, since I can't determine an image...

An explanation given to the question, "Why do I look different in pictures versus a mirror?", cited that in a picture one views a 2D image but in a mirror one views a 3D image. This difference can effect the depth perceived in ones face. Is this explanation valid? My take is that the...

Homework Statement Let A, B be sets, C,D\subset A and f:A\longrightarrow B be a function between them. Then f(C\cap D)=f(C)\cap f(D) if and only if f is injective. Homework Equations Another proposition, that I have proven that for any function f(C\cap D)\subset f(C)\cap f(D), and the...

Homework Statement "a concave mirror is placed horizontally on the ground with a focal length of 1 meter, a boy sitting on a tree above the mirror drops a 7cm diameter styrofoam ball right over the mirror 3 meters high, determine when the image will be the same size of the ball" Homework...

Hi guys I've been trying to make a program that simulates image formation in the eye so I simulated a spherical lens behavior in 3d coordinates and I'm facing a strange results! is it normal that the refracted rays don't intersect all at the same point I began to think it's true because of...

Hello all, I am taking a course on Digital Image Processing that starts in a week. I do not know linear algebra very well and am concerned this will be a problem. I understand the stuff that is taught at the beginning of a linear algebra course, which I guess is better called Matrix...

First of all I would like to wish a happy new year to all of you, who have helped us understand college math and physics. I really appreciate it. Homework Statement Determine the dimension of the image of a linear transformations f^{\circ n}, where n\in\mathbb{N} and...

E.g. Is there a way to see overall trends for particle physics, condensed matter physics, astrophysics, cosmology, and string theory?

hi everybody... are there any difference between: image processing and computer vision?

i am amazed by the possibility that if the light reflected from Earth comes back to us after traveling in space for thousands of years we will be able to see our past. And this could happen around black holes. Has anyone found an image resembling earth?