Segmentation: definition & types
“Do you know what segmentation is?” Jon asked the magician. The magician replied: “It’s the process of dividing an image into meaningful regions” “like giving every pixel a role. So, you know the pixels that…
YOLO
“The YOLO-scope! It stands for ‘You Only Look Once.” He aimed the YOLO-scope at a passing dragon. A neat little box appeared on the viewing screen around the creature, with a label that read: ‘Dragon…
Fast R-CNN
Blaze was fascinated by the tiny details of the world below. He dreamt of a way to instantly recognize every flower, every rock, and every scurrying critter in the meadow when he flies. One day,…
Inception: The Neural Network That Thinks in Parallel
“Most neural networks pick one filter size at a time. But why not do all of them at once?” Inception said. Give me a photo, I can zoom in on tiny details, look at medium-sized…
Types of Pooling operations
“You said pooling operations in Convolutional Neural Networks (CNNs) are like the magical zoom-out buttons.” “They reduce the size of feature maps while keeping the juicy bits of information. But how?” Peter asked. “There are…
Why CNNs are so effective
“Professor, why is CNN so effective?” “CNNs don’t just look at the whole image like a confused tourist—they zoom in on tiny patches (called kernels) and analyze them like Sherlock Holmes inspecting clues.” “Ok. This…
The CNN Workflow
“What’s CNN workflow?” Alex asked. Peter replied, “If we have an input image represented as a tensor, like a 32×32 pixel image with 3 color channels (Red, Green, Blue) would have a shape of 32x32x3.”…
ResNet – Residual Network
I’m building a super tall tower out of Lego blocks. Each block is a layer in a neural network. The taller the tower, the more complex patterns it can learn. But the problem is “Tall…
AlexNet: The CNN That Changed Everything
“Hey Alex, do you know what AlexNet is?” The little spirit asked Alex. “AlexNet is a game changer. Many years ago, everyone were using basic machine learning models to recognize images — and they were…
VGGNet in the Magic Canvas
“Wow. So this is the canvas that can do image classification and object detection?” Vixel asked. “Yes, I am VGG. VGG stands for Visual Geometry Group.” the Canvas replied. “More exactly, I’m VGG19, which means…
convolutional operations and convolutional neural networks (CNNs) — the backbone of modern computer vision
“Hey, Kernel. You work for Mr. Convolution, right? What do you do there?” The pixelated giant asked, to which the young Kernel response, “A convolution is a mathematical operation that blends two functions to produce…
Object Detection
“I love sortering, especially beautiful mushrooms like this.” Jon thought “But I heard something on object detection trying to micmic human ability. It combines object localization to create bounding boxes around each object and then…
Segmentation by Thresholding: Techniques and Python Implementation
“The cat is so cute, but not the carpet! I want to grab the cat area only.” “What should I do now, Mr. Crystal?” Kevin asked, to which the magic crystal replied, “You can do…
Convolution & Filtering
“The world was a dazzling mosaic of colors and shapes, but I wonder if the magical computer to see it differently.” The little fairy thought and flew to the house of the Great Wizard. “It’s…
Image Transformations for Data Augmentation
“Professor Elara,” chirped the little kid, “Can show me the magic of Image Transformations?” and Professor Elara blinked slowly. “Ok. We begin with Scaling.” With a gentle wave of her wing, Professor Elara conjured a…
Pixel Operations
Pixels are the smallest units of a digital image — think of them as the individual tiles in a mosaic. Each pixel holds color and intensity information, and by manipulating these values, we can transform…
Image Formation: Pixels & Color Spaces
In a realm painted with light and shadow, there lived tiny sprites of light called Pixels. They were the weavers of the visual world, each a tiny, glowing dot of energy. The more Pixels that…