Image Definition and 1000 Threads

An object is 9.79 cm from the surface of a reflective spherical Christmas-tree ornament 8.96 cm in diameter. What is the position of the image? Answer in units of cm I know that i need the radius of curvature to find the position of the image, but I'm not sure how to get that from the...

Google image search is the best place when searching for images on something. But I have always thought, "What if I have an image and I need to find out what it is about." Shazam works well for audio, but Google has finally done it with images. I noticed a week ago that you could drop images in...

After reading about how dithering works for created the sense of a larger range of colors from a small color palette, it makes sense how it works, but how in the world do computers figure out how to dither an image so that it looks correct to us? Is the fact that blue and red combined create...

Please provide your idea and picture of the most beautiful physics object.

One image should be formed by rays that go directly through the bubble and another image is formed by reflected light that hits the bubble. n1 = 1 n2 = 1.5 R = -7.5 CM so = 5 cm If n1 = n2, then si would equal 15 cm as measured from the second vertex on the concave surface. However, they're...

Homework Statement An object is situated at various points relative to V. The light is then reflected by the mirror, and the final image is viewed by the observer. http://www.flickr.com/photos/55153239@N03/6196518731/ Homework Equations 1/s + 1/s' = 2/R na/s + nb/s' = (nb-na)/R...

"real" image from concave mirror Ok so in we are currently doing mirrors and reflections in physics and from what I learned there are 2 types of images: real and virtual. I know that a virtual image is what you see INSIDE the mirror; but what does a real image looks like? I can't find anything...

The theory seems simple. Light strikes the film in a camera, or a CCD and the different regions of intensity are recorded. But what I can't get my head over, is how a different portion of the film strip or CCD *knows* which part of the image it is supposed to be representing. For example, if...

Hi I'm not sure if anyone here has used ISIS image subtraction program written by Alard, available online at http://www2.iap.fr/users/alard/package.html, but I'm hoping someone has. I'm currently working on a bit of research that requires PSF matching to work, and this program should easily...

Hi , I wonder why the image of the south pole in google Earth is blurred ?

I am studying the very first chapter of analysis, but can't quite get through this problem: Prove f −1(f(A)) ⊇ A Prove f(f −1(B)) ⊆ B

Help in MATLAB image processing ? hello friends...i save my picture named "manish.tiff" in MATLAB directory...then opening this with command named rgb =imread('manish.tiff') in command window...but it shows error... below is the error i m getting. (? Error using ==> imread File...

I have a question and I would like some help. Assuming mirror image vehicles hitting at 65mph. Is the force exacted on each vehicle equal to 130mph or 65 mph. My assumption is that it would be the same as hitting an inelastic brick wall.. Thank ya'll in advance..

Homework Statement A science museum has created a huge concave mirror with a focal length of 5 m, and mounted it so that it covers the entire wall at one end of a long hallway. If you stand on a center line painted down the middle of the hallway, you're on the mirror's principal axis. You...

Homework Statement An object 2.71 * 10-2m tall is 0.14m in front of a convex mirror that has a radius of curvature 42cm. Calculate the position and height of the image, is the image inverted or upright? Homework Equations Well, I've stated that I'm using the ray model of light. As far...

then through a plane mirror (I could put that all down in the title!) Homework Statement A bright object 1 cm tall is located at x = -6 cm. There is a thin lens atx = 0 with focal length f = 4 cm, and a plane mirror located at x = 7 cm. Light from the object passes through the lens, reflects...

Homework Statement so if the original object is 4.6 cm tall located at x = 0 and it's a concave mirror distance from C to the object is 16 cm and Radius of the mirror is 12 cm The Attempt at a Solution to find the position of x image i got 9.6 cm then for magnification i...

how can i work with images in visual studio c++? i want to work with .jpg images. So how do i store them and access them?

Homework Statement A lens forms an image of an object. The object is 16 cm from the lens. The image is 12 cm from the lens on the same side as the object. (a) What is the focal length of the lens? Is the lens converging or diverging? (b) If the object is 8.5 mm tall, how tall is the image...

Hi, Just came across this as an image in a book/monograph and it looks very MATLAB-esque, except I cannot figure out how to possibly create a circular image Say I have a 500x500 matrix and want to plot it as a colour image in this way. Does anyone know how? I've been re-reading the...

Hi, I'm attempting to determine the approximate pixel coordinates of cataloged stars within the field of view of a spacecraft camera. I'm given the right ascension and declination of the center of the camera field of view and its dimensions. I've used that information to filter a star...

Okay, so my first essay was swallowed by some impromptu logging out, so I'll be shorter and sweeter this time. I want to make a robot that accepts commands from a computer via USB. It will tell the robot basic commands like "next" and "back" with the bot figuring out what motors to move for...

I am having trouble understanding how mirrors have only either a virtual image or a real image. Take a concave mirror for example. If the object is placed between the mirror and the focal point, then there is a magnified virtual image. If the object is placed between the focal point and the...

THIS WAS SOVLED Homework Statement My book did a very bad job explaining the matter. I have no idea what function(s) I should even use to solve this problem using the MRI data that comes with MATLAB An MRI visualization example is shown in the help tutorial. Copy and paste the commands into...

Hi, I am working on binary (greyscale) image manipulation through C++ arrays. At school we use Photoimpact 7 to see the resulting image in .bin format... is there any free application i can use to do the same at home?

Homework Statement 13.2 A quadratic Julia set has the form z(n+1)=z(n)^2+c The special case where c=-.123+.745i is called Douday's rabbit fractal. Follow example 13.1, and create an image using this value of c. For the Madelbrot image, we started with all z-values equal to 0...

Hi all, Was told by an engineer at a tech startup to inquire here for anyone interested in discussing/solving/working on this problem. Basically, I am looking to crawl and index all images on a certain part of the web (yet undefined which part) and to be able to run a reverse image search...

What is Image Rejection Ratio (IRR) and How to calculate an Image Rejection Ratio (IRR)?

Homework Statement [PLAIN]http://img863.imageshack.us/img863/6634/quiz14.jpg Homework Equations None The Attempt at a Solution I say B or E but I can't find a reason to choose. I ignore the solution.

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 I just want to make sure I'm doing this right. okay so you have a conducting corner of angle 30 degrees. How many image charges are there, I just need to sketch it. Homework Equations The Attempt at a Solution my book sucks only explaining it for a 90 degree...

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 An object is placed against the center of a spherical mirror and then moved 79 cm from it along the central axis as the image distance i is measured. Figure 34-35 gives i versus object distance p out to ps = 45 cm. What is the image distance when the object is on the central...

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...

Homework Statement A child holds a candy bar 16.5 cm in front of the convex side-view mirror of an automobile. The image height is reduced by one-half. What is the radius of curvature of the mirror? 1Your answer is incorrect. cm Homework Equations 1/f = 1/do + 1/di...

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...