Counting Objects in Images
Using only a few lines of code, it is possible to count the number of objects in a image. It is important to do the image acquisition with a standard background.[more]
There are some basic steps:
1. Original image. 2. Apply a Gaussian filter to reduce image noise. 3. Binarize to get only a black-and-white binary image. 4. Count the number of elements (white spots) with Mathematica's built-in function ComponentMeasurements, which returns a list with the center of each cluster. 5. Original image with objects counted.
Use the tabs to see the intermediate steps; to see the steps, hover over the images.[less]
The images were captured with a USB camera connected to a Raspberry Pi computer.
This code was presented previously at two events: Embedded System Conference (ESC) 2014, São Paulo, Brazil Semana FCI 2015, Mackenzie University, São Paulo, Brazil
"Counting Objects in Images"
Wolfram Demonstrations Project
Published: November 5 2015