Units of density

Samples per inch

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).

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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

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Micrometer/diameter of daily used objects.

What was the diameter? music: https://www.bensound.com/

From playlist Fine Measurements

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How to calculate Sample Size

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

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Micrometer / diameter of daily used objects

What was the diameter? music: https://www.bensound.com/

From playlist Fine Measurements

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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

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Introduction to Sampling & Populations (1 of 4: Graphing the sample means)

More resources available at www.misterwootube.com

From playlist Data Analysis

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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

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Examples: Converting Between Metric Units

This video provides several examples of converting between different metric units of measure.

From playlist Unit Conversions: Metric Units

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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

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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

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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

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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)

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Flow and Pressure in Pipes Explained

What factors affect how liquids flow through pipes? Engineers use equations to help us understand the pressure and flow rates in pipes. Pipe systems are important to us, so it’s critical that we can design them to carry the right amount of flow without too much drop in pressure from one e

From playlist Flow in Pipes

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Different Sampling Methods

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

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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

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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

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Electrical conductivity in materials and resistivity vs resistance

Electrical conductivity is the constant of proportionality for electrical transport in response to the driving force of an electric field. It's completely analogous to mass and thermal transport (diffusion coefficient and thermal conductivity) in this way. We must also differentiate betwee

From playlist Materials Sciences 101 - Introduction to Materials Science & Engineering 2020

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GCSE Maths AQA Practice Paper Set 2 - Higher Tier - Paper 2 - Walkthrough with Full Solutions (*)

A complete walk through of the AQA GCSE Maths Practice Paper Set 2 - Higher Tier - Paper 2. Help revise for the 8300 new specification mathematics exams and your mock. This walkthrough tutorial has full solutions to each question, so you can use it like a mark scheme. Choose to watch

From playlist AQA GCSE Maths Practice Papers - All Paper Sets

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Introduction to Volume

This video provides a basic introduction to volume.

From playlist Volume and Surface Area (Geometry)

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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)

Related pages

Interpolation | Dots per inch | Pixels per inch | Lines per inch | Inch