crazybiocomputing
Wednesday, July 26, 2023
Lines Detection: Use of the Radon Transform
The classical approach to detect lines in an image is the Hough Transform. Here I'll present another alternative based on the Radon Transform (seen in my Learning Tomography series [see TOC]).
Thursday, March 30, 2023
Python - Table of Contents
Labels:
image,
matplotlib,
python,
scikit-image,
TOC
Installing python3, pip3, and scikit-image
A new series dedicated to Image Processing with the programming language Python. The first step is to install all the Python programming environment to manipulate and explore images.
Thursday, July 21, 2022
Playing with Phase and Magnitude
In this series dedicated to the Fourier Transform, it is important to understand the role played by magnitude (or amplitude) and phase in an image...
Wednesday, July 20, 2022
Model bias in cryo-EM - Einstein from noise
In the article of Maxim Shatsky et al. entitled "A Method for the Alignment of Heterogeneous Macromolecules from Electron Microscopy" (J Struct Biol. 2009, 166(1): 67–78. doi:10.1016/j.jsb.2008.12.008.), the authors show that pure noise images aligned to a reference image give an average image resembling the reference. This is a perfect example of the model bias occurring during the 2D classification step. Let's do it!!!
Thursday, June 30, 2022
Case study: The target
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