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Bounding rectangles in Python OpenCV

Posted 20th July 2021

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There are two methods in OpenCV to derive a bounding rectangle and extract the relevant values of an object or series of objects in an image.

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Use selective criteria to count files in PowerShell

Posted 1st July 2021

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Use Windows PowerShell to easily return some key statistics about the files contained on your computer or network drives using selective criteria.

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Changing date formats in R

Posted 21st June 2021

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Dates come in all sorts of formats, but R generally prefers dates in the format YYYY-MM-DD. Here’s a quick method to convert date formats in R.

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Cumulative totals by group in R

Posted 4th June 2021

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Use Tidyverse’s dplyr package in R to add cumulative totals to a table based on group.

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Tips for cleaning-up an R session

Posted 29th May 2021

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Sometimes one just needs a “clean slate” in R, particularly when using R Studio. Here are my quick tips for cleaning up an R session in R Studio:

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Managing RAW photos with Python

Posted 23rd April 2021

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Use Python to recursively scan directories and remove unused and redundant CR2 files.

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Convert RGB to CMYK in Python

Posted 26th March 2021

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Efficient Python code for taking a RGB image and converting it to CMYK before splitting the relevant channels out.

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SFTP via the Command Line

Posted 3rd March 2021

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Simple instructions for uploading or downloading files and directories using Secure File Transfer Protocol (sFTP) in Linux.

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Structural Similarity Index (SSIM) in Python

Posted 19th February 2021

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Quantitatively check the quality of a compressed image using a simple Python code for calculating the Structural Similarity Index (SSIM) and Mean Square Errors (MSE) between two images.

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Multi-line gradient hyperlinks

Posted 18th February 2021

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Use cascading style sheets to create a gradient underline link that will span multiple lines.

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