Author Archive for Catalin Perticas

Catalin started learning algorithms 8 years ago and has participated in numerous programming competitions throughout highschool. He won a bronze medal at the Balkan Olympiad in Informatics in 2009. He has been studying image processing and machine learning for a year now and has worked in a research institute for medical image analysis.

segmentation

Recurring principles for classifying objects in medical images

There is a wide range of structures that can be classified automatically for practical purposes. However, the underlying principles for training a machine to distinguish between different structures are very few. Let’s have a look at three basic principles applied to the following image: Segmentation The segmentation of the image (scans) into several objects of interest. In some cases, it…

illumination

Pixel Counting and Color Statistics – Part 1

Gathering Information from Color In this article I would like to further explore what you can do with OpenCV by analyzing how often certain colors appear and in what proportions they are to be found in different types of images. I will also introduce the concept of histograms and go through some interesting applications. Histograms naturally link image processing to…

all

Understanding an Image

Grid-like representation A 2D image can be represented as a rectangular grid, composed of many square cells, called pixels. How do these pixels look like? Just try to imagine a chessboard: Just like the black and white squares on the chessboard, pixels are nicely aligned in straight lines, both horizontally and vertically. We will refer to the horizontal ones as…

Welcome to We ❤ CV

Following the tradition of We ❤ Swift, we want to do something similar with OpenCV and gather a community of people interested in image processing related techniques for the purpose of sharing and extending our field knowledge. We can only achieve this by having high quality tutorials, exercises and problems on which to aquire practical skills and working together on…