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The purpose of this module is to introduce you to pixel-based image processing algorithms, similar to those that you might find in commercial image editing software such as Photoshop.

Table of contents


This module is one in a collection of modules designed to teach you about the Processing open source programming environment.

Processing is a Java-based OOP programming environment for people who want to create images, animations, and interactions.

The purpose of this module is to introduce you to pixel-based image processing algorithms, similar to those that you might find in commercial imageediting software such as Photoshop .

Click here to view the JavaScript version of the sketch discussed in this module in your HTML 5compatible browser.

Viewing tip

I recommend that you open another copy of this module in a separate browser window and use the following links to easily find and view the imagesand listings while you are reading about them.


  • Image 1 . The raw image displayed in an image explorer.
  • Image 2 . The modified image displayed in an image explorer.



The program that I will explain in this module is designed to be used as a preliminary test of the student's understanding of programming using Java and Processing Development Environment (PDE) .

If this were a real test, the student would be provided an image file named Pr0130a.jpg along with a pair of stand-alone Processing applications. Those applications would produce the raw image and a modifiedversion of the raw image, each in an image explorer, as shown in Image 1 and Image 2 . (Click here to view the modified image version of the sketch in your HTML 5 compatiblebrowser.)

Deduce the algorithm

The first requirement would be for the student to examine the raw image shown in the image explorer window in Image 1 and to deduce the algorithm required to transform that image into the modified image shown inthe image explorer window in Image 2 .

Implement the algorithm

The second requirement would be for the student to implement the algorithm once it is established. Among other things, this would require that thestudent be able to:

  • Load an image from an image file.
  • Modify the pixels in the image according to the algorithm.
  • Write one sketch to display the raw image in an image explorer window before it is modified.
  • Write another sketch to display the modified image in another image explorer window after it is modified.

Questions & Answers

anyone have book of Abdel Salam Hamdy Makhlouf book in pdf Fundamentals of Nanoparticles: Classifications, Synthesis
Naeem Reply
what happen with The nano material on The deep space.?
pedro Reply
It could change the whole space science.
the characteristics of nano materials can be studied by solving which equation?
sibaram Reply
plz answer fast
synthesis of nano materials by chemical reaction taking place in aqueous solvents under high temperature and pressure is call?
hydrothermal synthesis
how can chip be made from sand
Eke Reply
is this allso about nanoscale material
are nano particles real
Missy Reply
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
where is the latest information on a no technology how can I find it
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
Application of nanotechnology in medicine
has a lot of application modern world
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
yes that's correct
I think
Nasa has use it in the 60's, copper as water purification in the moon travel.
nanocopper obvius
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
STM - Scanning Tunneling Microscope.
How we are making nano material?
Some times this process occur naturally. if not, nano engineers build nano materials. they have different physical and chemical properties.
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Source:  OpenStax, The processing programming environment. OpenStax CNX. Feb 26, 2013 Download for free at http://cnx.org/content/col11492/1.5
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