# Jered Wells

### Duke Health

Radiation physicist at Landauer Medical Physics specializing in medical image processing, radiation dosimetry, and medical image quality and metrology. Other specialties include noise/dose reduction, image segmentation, and algorithm development.

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**Feeds**

Submitted

lorentzfit(x,y,varargin)

LORENTZFIT fits a single- or multi-parameter Lorentzian function to data

meer dan 4 jaar ago | 68 downloads |

Solved

How to subtract?

* Imagine you need to subtract a few numbers using MATLAB. * You will not be using eval for this task. * Given two ASCII strin...

ongeveer 7 jaar ago

Solved

Make a checkerboard matrix

Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

meer dan 7 jaar ago

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN

Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

meer dan 7 jaar ago

Solved

Triangle Numbers

Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

meer dan 7 jaar ago

Solved

Column Removal

Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

meer dan 7 jaar ago

Solved

Select every other element of a vector

Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

meer dan 7 jaar ago

Question

How to use neural network to perform image segmentation?

I have a clinical need to perform lung segmentation on AP and PA chest radiographs. Using conventional segmentation techniques (...

meer dan 7 jaar ago | 1 answer | 0

### 1

answerSubmitted

nortonbeer(W,varargin)

NORTONBEER produces a one-dimensional Norton-Beer apodization filter

meer dan 7 jaar ago | 4 downloads |

Question

Why does MATLAB resample display data for *some* large images and not others? Can this be turned off?

When displaying large images (i.e. images with dimension greater than the screen resolution) using IMSHOW, IMAGESC, and similar ...

bijna 8 jaar ago | 1 answer | 0

### 1

answerSolved

Pizza!

Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

ongeveer 8 jaar ago

Solved

Determine if input is odd

Given the input n, return true if n is odd or false if n is even.

ongeveer 8 jaar ago

Solved

Find the sum of all the numbers of the input vector

Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

ongeveer 8 jaar ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]

In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

ongeveer 8 jaar ago

Solved

Times 2 - START HERE

Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

ongeveer 8 jaar ago

Submitted

Grayscale Canny Edge Detection

Performs Canny edge detection with grayscale magnitude and direction outputs

ongeveer 9 jaar ago | 1 download |

Question

Can I run a "clear java" command but still keep a variable in the workspace?

Hi: I am trying to run "clear java" after temporarily modifying some files in the dynamic Java path. This also clears all var...

meer dan 9 jaar ago | 2 answers | 0

### 2

answersQuestion

Use ImageJ to read DICOM header data

MATLAB's dicominfo function sometimes misreads DICOM header data. I'd like to automatically call ImageJ from the MATLAB command ...

bijna 10 jaar ago | 1 answer | 0

### 1

answerSubmitted

dicomLUT

DICOMLUT applies an embedded lookup table to a DICOM image

meer dan 10 jaar ago | 1 download |

Submitted

Center of Mass

CENTEROFMASS finds the center of mass of the N-dimensional input array

meer dan 11 jaar ago | 3 downloads |

Submitted

Point cloud normal vector

NORMND computes the vector normal to points in an N-D point cloud

meer dan 11 jaar ago | 2 downloads |

Submitted

Simpson's 1/3 and 3/8 rules

SIMPSON: Simpson's rule for quadratic and cubic numerical integration

meer dan 12 jaar ago | 8 downloads |

Submitted

Stem and leaf plot

This is a simple utility for making stem and leaf plots output to the command window.

meer dan 12 jaar ago | 8 downloads |

Submitted

R-square: The coefficient of determination

RSQUARE is a simple routine for computing R-square (coefficient of determination).

meer dan 12 jaar ago | 13 downloads |

Submitted

OrthoView3D

MATLAB GUI for exploring 3D datasets through a sleek and simple interface (sample dataset included)

meer dan 12 jaar ago | 1 download |