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Jan Motl


39 total contributions since 2013

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Submitted


Average Filter
Average filter performs image smoothing with integral image method.

6 months ago | 26 downloads |

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Magic kernel resizing
The “magic kernel” is a method of resampling images that gives clear results free of artifacts.

9 months ago | 4 downloads |

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Sobel filter of predefined size
The function returns Sobel filter of predefined size.

10 months ago | 10 downloads |

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Normalized Discounted Cumulative Gain (NDCG)
Returns the Normalized Discounted Cumulative Gain

12 months ago | 1 download |

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Network Meta-Analysis
Performs a network meta-analysis

2 years ago | 3 downloads |

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Get all topological sorting arangements
Generates all topological sorting arangements

2 years ago | 0 downloads |

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Topological sort
Performs topological sort of a directed graph

3 years ago | 0 downloads |

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Bradley local image thresholding
A fast an well performing local image thresholding method.

3 years ago | 19 downloads |

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Rotate an image around a point
Performs rotation of an image around any point inside of the image.

4 years ago | 23 downloads |

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Bernsen local image thresholding
Implementation of Bernsen's thresholding method.

4 years ago | 12 downloads |

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Remove ghosts from binarized images
This method removes speckles in the binarized images.

4 years ago | 7 downloads |

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Nick local image thresholding
Nick's binarization performs local image thresholding.

5 years ago | 5 downloads |

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Wolf local image thresholding
Wolf's binarization performs local image thresholding.

5 years ago | 4 downloads |

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Meanthresh local image thresholding
Meanthresh performs a simple local image thresholding.

5 years ago | 3 downloads |

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Feng local image thresholding
Feng binarization method is well suited for ill illuminated or stained documents.

5 years ago | 5 downloads |

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Standard deviation filter
Standard deviation filter for images based on integral images.

5 years ago | 2 downloads |

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Niblack local thresholding
A traditional local image thresholding.

5 years ago | 15 downloads |

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Sauvola local image thresholding
Sauvola binarization method is well suited for ill illuminated or stained documents.

5 years ago | 28 downloads |

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Straighten image
The function finds the document orientation.

5 years ago | 11 downloads |

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Solved


Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

6 years ago

Solved


Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

6 years ago

Solved


Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

6 years ago

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Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

6 years ago

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Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

6 years ago

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Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

6 years ago

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Is my wife right?
Regardless of input, output the string 'yes'.

6 years ago

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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 ...

6 years ago

Submitted


Nadaraya-Watson smoothing
A non-parametrical regression (smoothing) tool using Gaussian kernel.

6 years ago | 17 downloads |

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Find the alphabetic word product
If the input string s is a word like 'hello', then the output word product p is a number based on the correspondence a=1, b=2, ....

6 years ago

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Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

6 years ago

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