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Related Concept Videos

Distance Corrections01:15

Distance Corrections

To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
Distance Measurements by Taping01:18

Distance Measurements by Taping

Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...
Distance Problem01:29

Distance Problem

When an object's velocity changes over time, the total distance traveled can be determined by summing small displacement intervals over short increments. This approach approximates the true distance through numerical summation and the use of integral calculus. An estimate of the total displacement can be obtained by measuring velocity at regular intervals and multiplying each value by the corresponding time step.If a runner accelerates over the first three seconds of a race, speed measurements...
Imaging Biological Samples with Optical Microscopy01:18

Imaging Biological Samples with Optical Microscopy

Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
The Distance Formula01:20

The Distance Formula

In geometry, measuring the direct distance between two points on a plane is essential in various practical and theoretical applications. Whether in navigation, engineering, or computer graphics, determining the shortest path between two locations involves using the distance formula. This formula is derived from the Pythagorean Theorem, which relates the lengths of the sides of a right triangle. On a coordinate plane, the horizontal and vertical distances between two points serve as the legs of...

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Related Experiment Video

Updated: Jul 6, 2026

Quantifying Intermembrane Distances with Serial Image Dilations
07:45

Quantifying Intermembrane Distances with Serial Image Dilations

Published on: September 28, 2018

Image distance transforms that use optical correlation.

S Zhang1, M A Karim

  • 1Department of Computer Science, College of Staten Island, University of New York, 2800 Victory Boulevard, Staten Island, New York 10314, USA.

Applied Optics
|March 14, 2008
PubMed
Summary
This summary is machine-generated.

Optical correlation speeds up binary image distance transforms, a typically slow process. A joint transform correlator enables real-time computation of various distance transforms for applications like skeletonization.

Related Experiment Videos

Last Updated: Jul 6, 2026

Quantifying Intermembrane Distances with Serial Image Dilations
07:45

Quantifying Intermembrane Distances with Serial Image Dilations

Published on: September 28, 2018

Area of Science:

  • Computer Vision
  • Optical Information Processing
  • Image Processing

Background:

  • Image distance transforms are crucial for image analysis but are computationally intensive.
  • Existing methods for distance transform computation are often slow, limiting real-time applications.

Purpose of the Study:

  • To develop a fast method for computing binary image distance transforms using optical correlation.
  • To propose a programmable optical processor capable of real-time distance transform computation.

Main Methods:

  • Utilizing optical correlation for the fast computation of binary image distance transforms.
  • Implementing a joint transform correlator that incorporates morphological threshold-decomposition.
  • Designing a programmable optical processor for Euclidean, city-block, and chessboard distance transforms.

Main Results:

  • Demonstrated real-time computation of binary image distance transforms.
  • Successfully implemented Euclidean, city-block, and chessboard distance transforms using the proposed optical processor.
  • Showcased skeletonization using the distance transform and the rotation invariance property of the Euclidean distance transform.

Conclusions:

  • Optical correlation offers a significant speed advantage for binary image distance transform computation.
  • The proposed joint transform correlator provides a versatile and efficient platform for real-time image analysis tasks.
  • The demonstrated capabilities highlight the potential of optical processing for advanced image manipulation and analysis.