Author Archives: Nestor
Activity 7 – Image Segmentation
In this activity, we learn how to segment images into objects containing particular characteristic, in this activity, let’s do colors. So let’s begin with something basic, grayscale images. Let’s look at this particular image of a very funny check. If we look … Continue reading
Activity 6 – Applications and properties of the Fourier transform
This activity, we do a lot of Fourier Transforms. We find out first how they behave so we can use that, because otherwise, it’s not really science. A. Anamorphic Property The great thing about the fourier transformn is that we can … Continue reading
Activity 5 – Fast Fourier Transforms in Images
In this activity, we started with the Fast Fourier Transform. The Fourier Transform is a mathematical method of transferring data into a form that is a function of frequency. In images, which are functions in space, we Fourier transform to … Continue reading
Activity 4 – Length and Area Estimation in Images
In this activity, a new method of image processing was taught to us. This was using green’s theorem in area estimation. From our Mathematical Methods courses, we know that green’s theorem is a relation between the line integral of a … Continue reading
Activity 3 – Scilab Basics
This activity was to build up our basics in SciLab. Scilab is easier to use than most programming platforms. I found it difficult to use scilab. Possibly because the documentation of Scilab is less definite than I’m used to with … Continue reading
Activity 2 – Digital Scanning
This week, we started with Digital Scanning. We were tasked with taking an old handdrawn figure from old journals or books and use ratio and proportion to find the scale of the drawing and extrapolate data from the graph. I … Continue reading
Activity 1 – Basic Ratio and Proportion
For the first meeting, we did a simple activity indicating the use of ratio and proportion. We inserted ourselves into our favorite movie posters. This was done using paint. It was hard to find the specific photo that would match … Continue reading
Physics blog 