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.
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.
Peak Signal-to-Noise Ratio (PSNR) in Python
Posted 12th February 2021
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Quantitatively check the quality of a compressed image using a simple Python code for calculating the Peak Signal-to-Noise Ratio (PSNR) between two images.
Reading EXIF data in Python
Posted 2nd February 2021
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In order to review the properties of various common-format image files, I wrote a command-prompt script in Python that will display EXIF data and other properties of JPG, PNG, TIF, CR2 and NEF files.
Query a PostgreSQL database via Python
Posted 11th December 2020
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Use this simple template script created in Python to connect to your PostgreSQL database and run a query.
Selectively rotating images in Python recursively
Posted 3rd December 2020
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Use OpenCV in Python to recurse through directories and rotate selected images based on a string in their file name.
Iterate both i and j in Python
Posted 2nd September 2020
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Two methods for implimenting nested iterations of i and j in Python.
SQL to CSV via Python, with Headers
Posted 7th June 2019
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Nifty Python code that converts a SQL database file into a CSV file and includes column headers.
Larger matplotlib images in Jupyter Notebook
Posted 21st February 2019
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Simple code to enable matplotlib to generate larger inline images in Jupyter Notebook.