Resistor-Reader-ECE4132

This is the MATLAB code for my Resistor Reader university project from the Spring 2022 semester.

Running the code

To run the code, simply run RUNME.m with the path to your image as the function argument. The image will be displayed on the screen, and after a few seconds, the detected resistors will be displayed, along with their resistances and tolerances.

Explanation of the code

The workflow of the code is as follows:

• Binarize the image to detect resistors as darker areas on a lighter background.
• Filter the darker areas (blobs) such that only blobs that could be resistors based on overall size and shape are processed further.
• Zoom in on each resistor candidate and use the Hough transform to locate lines (boundaries of resistor bands).
• Sample the colors between the lines.
• Use support-vector machine to match rgb color coordinates to appropriate color words.
• Use the resistor band rules to translate a series of color words into a resistance and tolerance value of each resistor.