PHYS 52 LAB 6 - Redone

A 3T MRI scanner used is tuned for proton imaging. For a given imaging sequence applied to image a patient's leg the gradient strength is 1 G/cm, FOV is 25 cm, and matrix is 250x250. The patient has a titanium screw in their leg that causes a magnetic susceptibility change to the main magnetic field of 0.5 Gauss. How much shift is image position ( in pixels) will be seen in this part of the leg?

create code...preferably matlab for the image question

A horizontal ray reflects from a plane mirror that makes an angle a with the horizontal. The reflected ray makes an angle e = 50 with the incident ray. What is the value of the angle a? a = 40° a = 30° a = 50° a = 60 a = 65

Please show the graph.

We highlighted two errors in the equation representing the motion of a body subjected to gravity: the difficulties of air resistance and the fact that the Earth is not a perfect sphere. Is this mathematical model free of extra inaccuracies? Do you believe that these additional variables should be incorporated into our falling body model? Explain why you feel they should or should not be included.

answer part 1 only

What is the difference of the meaning of the word ray in math and in computer science?     In both areas, the meaning is that a ray is a directed line segment.     In both areas, the meaning is that a ray is “half” of a line that has an origin and extends infinitely in one direction.     Computer science: A ray is “half” of a line that has an origin and extends infinitely in one direction.  Math:  A ray is a directed line segment.     Computer science: A ray is a directed line segment. Math: A ray is “half” of a line that has

Computer graphics Explain how to simulate reflection from surfaces of different roughness using a reflection map.

subject-computer graphics

Picture Attached The following figure depicts an imaging set-up with an object and a sensor. It shows thatin general, reflected light rays from a point on the object surface go in a wide range ofdirections.(a) Explain a problem of a resulting image from this set-up.(b) Draw and explain how a pin-hole camera resolves the problem. Describe a problemthat a pin-hole camera suffers from.

Answer with true or false and correct the error if it is found in the following sentences: 1) Cathode ray oscilloscope (CRO) is considered primarily as a function of voltage. 2) The gun consists of a heated cathode, control grid, and four anodes. 3) Persistence is the length of time that the intensity of spot is taken to increased to 10% of its original brightness. 4) Active (selfgenerating) transducers develop their output in the form of electrical voltage or current by any source of electrical excitation. 5) In a photovoltaic transformer when a constant voltage is applied between the cathode and the anode, the current is inversely proportional to the amount of light falling on the cathode.

With MATLAB, using two 3D vectors you have created with x and y names, calculate the angle between them using dot product, first. Dot product is c=dot(x,y) or c=x*y'. Then use cross (vector) product, calculate the same angle and show that the angle is same. Again , cross product is c=cross(x,y).

Assume that the given image is affected by Gaussian noise, Apply all the mean filters to remove the noise. f(x, y) = 102 103 102 106 106 102 104 104 105 101 102 102 102 104 103 106

(d) Explain the two algorithms used to reconstruct the image from the telescope data. (e) What parameters were required for the GRMHD simulations to generate an image? (f) Explain the physical origins of the features  (central dark region, ring, shadow). (g) How can the image resolution be increased in future observations?

Write a MATLAB program to give a quantitative comparison between a Sobel edge map and the reconstructed image from the phase components of the Fourier transform of an image

The sinusoidal wave shown in the figure below is traveling in the positive x-direction and has a frequency of 46.6 Hz. M 5.20 cm (a) Find the amplitude. cm (b) Find the wavelength. cm (c) Find the period. s (d) Find the speed of the wave. m/s -8.26 cm

Computer Science Given a 512 x 512 image that consists of a series of 8-pixel wide white, and 8-pixel wide dark lines, where each pixel is 0.1mm wide. What is the spatial frequency of the lines in lp/mm?

Explain why light rays start from a camera in the ray-tracing algorithm

Question 14 Select the appropriate response What is the name of the phenomenon when both refraction and reflection combine and all light is reflected (change direction)? a semaphore signal index of refraction total internal reflection absorption Submit Response

Using Matlab simulate the intensity from the photon sieve lens

Colors of different nature can be produced by mixing three fundamental colors that are red, greenand blue. Consider you are assigned a task to design a digital system that is equipped with threedifferent LEDs and four different color sensors. One LED is red (symbolized with R), one isgreen (symbolized with G) and one is blue (symbolized with L) while one sensor detects whitecolor (symbolized with W), one detects black color (symbolized with B), one detects cyan color(symbolized with C) and one sensor detects magenta color (symbolized with M).It is known that each color sensor produces logic 1 output if and only if when an object of itscorresponding color passes in front of it, otherwise logic 0. Each LED turns on when logic 0 isprovided to it and remains turned off otherwise. Three LEDs are to be turned on according to thefollowing conditions.i. If only white color is detected then all three LEDs should be onii. If only black color is detected then all three LEDs should be offiii. If…

Let C be a black circular disk in front of a white background. The circular disk is parallel to the image plane. This disk is projected on the image plane through a pinhole. What is the shape of the disk’s projection on the image plane?

DIGITAL IMAGE PROCESSING

Wirte a matlab code to plot the 3D image of a helix: Use the following parameters and equations that define the axes in 3D: p=0.199; Pitch distance (distance between the turns)a=0.02999500; Radius of the helis wireb=0.191; Radius of the helixn = 5, is the number of helis turns. δ = atan(p/(2*pi*b)); The pitch anglex’ = b + a cos(Ө)y’ = -a sin(Ө) sin(δ)x = x’ sin(ф)+y’ cos(ф);y =-x’ cos(ф)+y’ sin(ф);z = p*ф/(2*pi)+a*sin(Ө)*cos(δ);