Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I have been reading the API and documentation (http://java.sun.com/products/java-media/jai/forDevelopers/jai1_0_1guide-unc/Analysis.doc.html 9.5 Edge Detection) and have come across the GradientMagnitudeDescriptor class. Thing is, the create() Method of this class returns a static RenderedOp (whatever that is).
How do I deal with this static RenderedOp in terms of extracting coordinates?
Sorry if this is a stupid question, but I am completely new to image processing and analysis.
Take a look at Listing 9-4 Example GradientMagnitude Operation and see if that helps any. You don’t call the
createmethod on theGradientMagnitudeDescriptorclass, instead you call theJAI.create()method with the “GradientMagnitude” operation name.JAI.create()returns an instance ofRenderedOpwhich can be cast toPlanarImageif you want.