Samples per inch (SPI) is a measurement of the resolution of an image scanner, in particular the number of individual samples that are taken in the space of one linear inch. It is sometimes misreferred to as dots per inch, though that term more accurately refers to printing resolution. Generally, the greater the SPI of a scanner, the more detailed its reproduction of the scanned object. Typical consumer-level flatbed scanners are capable of optical resolution ranging from 100 to 2400 SPI; high-end scanners may have an optical resolution of 4800 SPI or more. Many scanners use interpolation techniques to achieve a higher effective SPI rating, with some manufacturers offering nearly one million SPI, though the quality is primarily limited by the optical resolution; interpolated SPI does not provide additional pixels in the scanned image. Horizontal and vertical SPI ratings may differ for a given scanner; typical flatbed scanners use a horizontal array of sensors that are passed across the bed using an electric stepper motor. The density of the array of sensors determines the horizontal scanning resolution, while the minimum step size of the motor determines the vertical resolution. Similar characteristics are present in drum scanners, which continuously spin the item being scanned past the sensor array for numerous imaging passes. To calculate the number of raw data bytes that a scanned image will take up, you can use the follow formula : Where :vSPI is the vertical SPIhSPI is the horizontal SPI (can be considered the same as vSPI if not specified specifically)area is the squared area of the scanned document in inches²color depth encoding is the number of bits used to encode a given amount of color information (256 colors=8; 65'536 colors=16; 16million colors=24)Remember that this will give raw data bytes, images are almost always compressed when saved to disk using lossless (like PNG, TIFF) or lossy image formats (like JPEG). (Wikipedia).
How to calculate Samples Size Proportions
Introduction on how to calculate samples sizes from proportions. Describes the relationship of sample size and proportion. Like us on: http://www.facebook.com/PartyMoreStudyLess
From playlist Sample Size
Micrometer/diameter of daily used objects.
What was the diameter? music: https://www.bensound.com/
From playlist Fine Measurements
A video on how to calculate the sample size. Includes discussion on how the standard deviation impacts sample size too. Like us on: http://www.facebook.com/PartyMoreStudyLess Related Video How to calculate Samples Size Proportions http://youtu.be/LGFqxJdk20o
From playlist Sample Size
Micrometer / diameter of daily used objects
What was the diameter? music: https://www.bensound.com/
From playlist Fine Measurements
Convert Between Inches and Centimeters Using a Unit Fraction
This video explains how to convert between inches and centimeters using a unit fraction. http://mathispower4u.com
From playlist Unit Conversions: Converting Between Standard and Metric Units
Introduction to Sampling & Populations (1 of 4: Graphing the sample means)
More resources available at www.misterwootube.com
From playlist Data Analysis
Determine Volume in Cubic Feet and Convert to Cubic Yards (Topsoil App)
This video explains how to determine the volume of a right rectangular prism in cubic feet and convert the volume to cubic yards. http://mathispower4u.com
From playlist Unit Conversions: American or Standard Units
Examples: Converting Between Metric Units
This video provides several examples of converting between different metric units of measure.
From playlist Unit Conversions: Metric Units
Photoshop Tutorial - IMAGE SIZING for output devices
Learn how to change a document size to fit a specific output device. Explore more Photoshop courses and advance your skills on LinkedIn Learning: https://www.linkedin.com/learning/topics/photoshop?trk=sme-youtube_M136048R124-19-01_learning&src=yt-other This is an excerpt from Photoshop 20
From playlist Adobe Photoshop
Marc Levoy - Lectures on Digital Photography - Lecture 7 (11apr16).mp4
This is one of 18 videos representing lectures on digital photography, from a version of my Stanford course CS 178 that was recorded at Google in Spring 2016. A web site that includes all 18 videos, my slides, and the course schedule, applets, and assignments is http://sites.google.com/sit
From playlist Stanford: Digital Photography with Marc Levoy | CosmoLearning Computer Science
SHOP TIPS #294 Checking Surface Roughness with PROFILOMETER 2 of 2 tubalcain
In this 2 part video , I discuss "SURFACE ROUGHNESS" (surface finish) on machined surfaces. And here's how to use a portable TAYLOR HOBSON PROFILOMETER. Subscribe & watch all 650 videos. www.mrpete222.com
From playlist #3 MACHINE SHOP TIPS tubalcain playlist #201 thru #300
Statistics - 8.1.2 Estimating Population Means (𝜎 known)
In our first video for calculating a confidence interval for a population mean, we discover how to calculate the critical value, the standard error, the margin of error and finally the confidence interval. In addition, we discuss how to interpret the resulting interval. Power Point: htt
From playlist Applied Statistics (Entire Course)
Flow and Pressure in Pipes Explained
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From playlist Flow in Pipes
An overview of the most popular sampling methods used in statistics. Check out my e-book, Sampling in Statistics, which covers everything you need to know to find samples with more than 20 different techniques: https://prof-essa.creator-spring.com/listing/sampling-in-statistics
From playlist Sampling
Larson-Miller parameter & stress rupture example problem
example problem with worked solution for Larson Miller parameter question identifying maximum load in order for a component to survive a designated time and temperature.
From playlist MSE example problems tutorial
The Curse of Oak Island: Dye Test Reveals Exciting New Evidence (Season 6) | History
A dye test at the Money Pit site reveals new evidence about the existence of flood tunnels at Smith's Cove in this clip from Season 6, "Dye Harder". #OakIsland Subscribe for more from The Curse of Oak Island and other great HISTORY shows: http://histv.co/SubscribeHistoryYT Catch up with t
From playlist The Curse of Oak Island: Season 6 | History
Electrical conductivity in materials and resistivity vs resistance
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From playlist Materials Sciences 101 - Introduction to Materials Science & Engineering 2020
GCSE Maths AQA Practice Paper Set 2 - Higher Tier - Paper 2 - Walkthrough with Full Solutions (*)
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From playlist AQA GCSE Maths Practice Papers - All Paper Sets
This video provides a basic introduction to volume.
From playlist Volume and Surface Area (Geometry)
Introduction to Hypothesis Testing for Business Statistics (Week 14A)
Hypothesis testing is an inferential statistical method that uses sample data to evaluate assumptions about a population parameter. Dr. Daniel introduces the topic using a example of polar bears walking and a cartoon dog who solves mysteries properly using the null hypothesis. We also lear
From playlist Basic Business Statistics (QBA 237 - Missouri State University)