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Jered Wells


Duke Health

Last seen: 11 dagar ago Active since 2012

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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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lorentzfit(x,y,varargin)
LORENTZFIT fits a single- or multi-parameter Lorentzian function to data

mer än 4 år ago | 61 downloads |

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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...

ungefär 7 år 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...

mer än 7 år 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 ...

mer än 7 år 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...

mer än 7 år 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 ...

mer än 7 år 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...

mer än 7 år 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 (...

mer än 7 år ago | 1 answer | 0

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answer

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nortonbeer(W,varargin)
NORTONBEER produces a one-dimensional Norton-Beer apodization filter

mer än 7 år 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 ...

nästan 8 år ago | 1 answer | 0

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answer

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

ungefär 8 år ago

Solved


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

ungefär 8 år ago

Solved


Add two numbers
Given a and b, return the sum a+b in c.

ungefär 8 år 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 ...

ungefär 8 år 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...

ungefär 8 år 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:...

ungefär 8 år ago

Submitted


Grayscale Canny Edge Detection
Performs Canny edge detection with grayscale magnitude and direction outputs

ungefär 9 år ago | 1 download |

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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...

mer än 9 år ago | 2 answers | 0

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Question


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 ...

nästan 10 år ago | 1 answer | 0

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answer

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dicomLUT
DICOMLUT applies an embedded lookup table to a DICOM image

mer än 10 år ago | 1 download |

Submitted


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

mer än 11 år ago | 3 downloads |

Submitted


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

mer än 11 år ago | 2 downloads |

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Simpson's 1/3 and 3/8 rules
SIMPSON: Simpson's rule for quadratic and cubic numerical integration

mer än 12 år ago | 9 downloads |

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

nästan 13 år ago | 9 downloads |

Submitted


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

nästan 13 år ago | 16 downloads |

Submitted


OrthoView3D
MATLAB GUI for exploring 3D datasets through a sleek and simple interface (sample dataset included)

nästan 13 år ago | 1 download |

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