Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Save more on your purchases now! discount-offer-chevron-icon
Savings automatically calculated. No voucher code required.
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Raspberry Pi Sensors

You're reading from   Raspberry Pi Sensors Integrate sensors into your Raspberry Pi projects and let your powerful microcomputer interact with the physical world

Arrow left icon
Product type Paperback
Published in Apr 2015
Publisher
ISBN-13 9781784393618
Length 192 pages
Edition 1st Edition
Arrow right icon
Author (1):
Arrow left icon
Rushi Gajjar Rushi Gajjar
Author Profile Icon Rushi Gajjar
Rushi Gajjar
Arrow right icon
View More author details
Toc

Table of Contents (10) Chapters Close

Preface 1. Meeting Your Buddy – the Raspberry Pi FREE CHAPTER 2. Meeting the World of Electronics 3. Measuring Distance Using Ultrasonic Sensors 4. Monitoring the Atmosphere Using Sensors 5. Using an ADC to Interface any Analog Sensor with the Raspberry Pi 6. Uploading Data Online – Spreadsheets, Mobile, and E-mails 7. Creating an Image Sensor Using a Camera and OpenCV A. Shopping List Index

Image processing


Have you ever tried to look at an image by zooming it to a maximum level? It just looks like a floor with organized tiles and colorful patterns on it. These square tiles in the image are known as pixels. Basically, an image is a group of such pixels, with each pixel containing a particular value of color, which forms the recognizable patterns by providing information to the human eye. It all depends on how humans perceive the image by observing shapes and colors. Each pixel in an image contains information that can be generated from a byte (8 bits) or a couple of bytes, which defines the depth of an image. Depth of an image is nothing but the number of bits present in a single pixel. Current display monitors and graphics engines support up to 64-bit depth of images. Basic types of images are binary, grayscale, and RGB, and many more such as HSV, HLS, and YCC are known types. A grayscale image does have the range of values from 0 to 255 in the 8-bit mode, while a binary image...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime