It is time to continue our work with the mighty Fourier Transform. Previously, on Activity #5, I showed how the Fourier Transform is related to a simple lens system, in which the object (which is the image generated using Scilab) is placed at the focus of the image. The corresponding image of the lens system is the […]

Read more "Activity #6 – Properties and Applications of the 2D Fourier Transform"

Digital image manipulation and image processing have never been complete without the famous Fourier Transform. Developed by Joseph Fourier (1768-1830), the Fourier Transform (FT) has not only led to advancements in mathematics such as determining solutions of differential equations, but also has been used for optics, sound and acoustics, signal processing (acquisition of signal frequencies), […]

Read more "Activity #5 – Fourier Transform Model of Image Formation"

Digitization has not only helped in generating synthetic images and digital reconstruction of old graphs and images, but also became essential in the estimation of object size using 2-D images. This has led to great improvements in research and development because not all objects are measurable with the cheap equipment. Measuring the size of microscopic specimen like […]

Read more "Activity #4 – Length and Area Estimation in Images"