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Contour Detection

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Python Programming Learning Circle
Python Programming Learning Circle
Nov 9, 2023 · Artificial Intelligence

Python OpenCV Answer Sheet Recognition: A Step‑by‑Step Tutorial

This tutorial explains how to use Python and OpenCV to read an answer‑sheet image, preprocess it, detect contours, apply perspective transformation, locate each option, and determine selected answers by analyzing pixel intensity within detected circles.

Contour DetectionPythonanswer-sheet
0 likes · 10 min read
Python OpenCV Answer Sheet Recognition: A Step‑by‑Step Tutorial
HomeTech
HomeTech
Aug 23, 2022 · Mobile Development

Extracting Car Outlines from Sample Images for 360° Vehicle Capture in an iOS App

This article describes a step‑by‑step iOS implementation that converts example car images into bitmap points, scans edges, removes duplicate points, compensates missing vertices, and finally builds a closed BezierPath to guide 360° vehicle photography, including full Objective‑C code snippets.

BezierPathContour DetectionObjective-C
0 likes · 8 min read
Extracting Car Outlines from Sample Images for 360° Vehicle Capture in an iOS App