SimpleColorDetection

Script to do simple color detection in RGB color space. Finds red objects in the image.

Description

This script is a demo that shows you how to find objects of a certain color in an image. For this example I'm using the standard onion, peppers, or canoe image that ships with the Image Processing Toolbox. You can also select one of your own color images instead if you wish. Then I separate the image into its component red, green, and blue color bands. I compute thresholds, and ultimately find a mask for the red objects. Prompts will guide you through the demo step by step. I multiply this mask by the original image to show the image with only the red objects showing and everything else blacked out. This script can be adapted to find other colors (white, green, blue, yellow, etc.)

If you want to do any measurements of the red objects, I refer you to my blob measurement demo file at http://www.mathworks.com/matlabcentral/fileexchange/25157

Requires the Image Processing Toolbox. Tested with R2008b and R2010a.

• Acknowledgements: This submission has inspired the following:; Extract Red Objects from Aerial Image
• Required Products: Image Processing Toolbox
• MATLAB release: MATLAB 7.10 (2010a)

[Biplab]

 

[Image Analyst]

The Mathworks has a LAB color space classifier demo at
http://www.mathworks.com/products/image/demos.html?file=/products/demos/shipping/images/ipexfabric.html
It's also worth looking at.

[Husam Aldahiyat]

 

[Ravish]

 

[Azy]

 

[German Espinal]

Buenas noches

Soy German Espinal, un estudiante de semestre 8 de la Universidad de Cundinamarca.

Actualmente estoy desarrollando un proyecto para la materia de Inteligencia Artificial y me urge un codigo Matlab para terminarlo.

Yo he encontrado muchos buenos videos y material sobre Matlab y creo que gracias a ellos he aprendido mucho.

Basicamente lo que necesito es:

Poner una tarjeta o un carton pintado de un color (puede ser primario o no) frente a la webcam de mi computadora
Capturar esta imagen si es necesario
Decir que color es ese : rojo, amarillo, verde, azul, blanco, negro, etc.

Parece simple verdad ? He buscado mucho, pero no se si debo capturar la imagen, hacerle algun tratamiento, trabajar en RGB o en que codigo de color, como capturar ese codigo y compararlo para poder dar el resultado.

Mil gracias !

Germán Espinal [e-mail]

[divya]

hello
i like your work
sir i want to detect two colors blue and red in the same image..i am not able two do that..please tell me how to do that..

[Image Analyst]

If anyone wants to ask me a question, click my name above, then click the "Contact Author" link.

[Indika Kulatunga]

Thank you Image Analyst for your help.