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  • Art And Design 2016 NQF
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Convolution filters calculator

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Given a (3x3 or 5x5) convolution matrix for a Low Pass, High Pass or Sharpening Matrix this spreadsheet can be used to find two of the three matrices given the other one.

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PEARSON (PEARSON)
Course
Unit 19 - Digital Image Capture and Editing









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Study Level
BTEC
Examinator
PEARSON (PEARSON)
Subject
Art and Design 2016 NQF
Unit
Unit 19 - Digital Image Capture and Editing
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Uploaded on
July 31, 2025
Number of pages
12
Written in
2024/2025
Type
Other
Person
Unknown

Subjects

  • convolution filter
  • convolution matrix
  • low pass
  • high pass
  • sharpening
  • filter
  • matrix
  • image processing
  • bluring filter
  • edge finding filter

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Instructions

Use the worksheet for the filter you have values for
For example, if you know values for the (3x3 or 5x5) convolution matrix for the
Low pass filter use the Enter Low Pass Filter Values worksheet
High pass filter use the Enter High Pass Filter Values worksheet
Sharpening filter use the Enter Sharpening Filter Values worksheet

Each worksheet will calculate values for the other two convolution matrices

You will also need to enter values for
the sharpening factor, f (using the drop down list of fractions from 1/10 to 1)
any estimated values for the Low Pass Filter when working with known values for the High Pass Filter

,High Pass Filter
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timothyjohntyne

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Timothy John Tyne

I am a further education lecturer and have published notes from some of the courses I have taught as a lecturer (maths) and also some courses I have taken as a student (LPC). These include revision notes on English Law (in particular some units of the LPC), GCSE mathematics and photography. I may add notes on other subjects such as physics in future.

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