Image Processing with java

About this project

The code I was developing on 3-4 years ago, While I studied on Third years in University. My purpose is to use the code in Senior project. Now I don't work in image processing field anymore. I decided to open code for everyone who is interesting in image processing. I want people to lean from my code.

This project develop by using java, image processing concept and basic mathematical formula

What's inside the project.

Image2D.java

Main class, show example to use function

Gaussian.java

The algorithm for bluring image, I use Gaussian distribution method

Link

• https://en.wikipedia.org/wiki/Gaussian_blur
• http://www.pixelstech.net/article/1353768112-Gaussian-Blur-Algorithm
• http://blog.ivank.net/fastest-gaussian-blur.html

Grayscale.java

The algorithm for convert image to gray color, In this file I use Luminosity method, However I can read other method and example at below link

Link

• https://en.wikipedia.org/wiki/Grayscale
• http://developer.bostjan-cigan.com/java-color-image-to-grayscale-conversion-algorithm/
• http://www.tannerhelland.com/3643/grayscale-image-algorithm-vb6/
• http://www.johndcook.com/blog/2009/08/24/algorithms-convert-color-grayscale/

Histogram.java

understand about histogram

• http://www.tutorialspoint.com/dip/histograms_introduction.htm
• http://www.tutorialspoint.com/dip/histogram_equalization.htm

Math formula

• https://en.wikipedia.org/wiki/Histogram

Threshold.java

The algorithm to convert image to binary color (Separates pixels in an image into a foreground and background) , In this file I use Otsu's method, However you must have understand about histogram first cause by threshold algorithm base on histogram

understand about Threshold

• https://en.wikipedia.org/wiki/Thresholding_(image_processing)

Math formula for Otsu's method

• http://www.ancient-asia-journal.com/articles/10.5334/aa.06113/
• https://en.wikipedia.org/wiki/Otsu%27s_method

EdgeOperator.java

The algorithm to find edge of image , I use Canny Edge algorithm

Understand about Canny Edge algorithm

• https://en.wikipedia.org/wiki/Canny_edge_detector

Definetion and example

I follow by this link to implement canny edge and use convolution method to apply value to image

• http://dasl.mem.drexel.edu/alumni/bGreen/www.pages.drexel.edu/_weg22/can_tut.html

Definetion on OpenCv website

• http://docs.opencv.org/2.4/doc/tutorials/imgproc/imgtrans/canny_detector/canny_detector.html

AutoBalance.java

link

• https://en.wikipedia.org/wiki/Color_balance

Remove or Add image area (Morphological)

Concept

• https://www.cs.auckland.ac.nz/courses/compsci773s1c/lectures/ImageProcessing-html/topic4.htm

Erosion.java

link

• http://homepages.inf.ed.ac.uk/rbf/HIPR2/erode.htm

Dilation.java

link

• http://homepages.inf.ed.ac.uk/rbf/HIPR2/dilate.htm

See also Morphological

Closing

• https://en.wikipedia.org/wiki/Closing_(morphology)

Opening

• https://en.wikipedia.org/wiki/Opening_(morphology)

Read pixel color value

RGB.java

If you get value of pixle from RGB.java to access RGB value on Dicimal digit, You must use bitwise operators to shitf bit. R >> 16 , G >> 8 and B, Then add mask by (& 0xFF), See example in below link or file this project

link

• http://stackoverflow.com/questions/22391353/get-color-of-each-pixel-of-an-image-using-bufferedimages
• http://stackoverflow.com/questions/6524196/java-get-pixel-array-from-image

Convoluion

To apply vaule to image, You must have understand Convoluion method

• https://en.wikipedia.org/wiki/Convolution
• http://mathworld.wolfram.com/Convolution.html
• http://www.songho.ca/dsp/convolution/convolution.html

License

This project is licensed under the MIT license. See the LICENSE file for more info.