{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

HW2 - cartesian plane(x,y to points in the log-polar plane...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
COSC 4393/6380 Digital Image Processing Department of Computer Science University of Houston Assignment #2 Due: 11/14/10 1. Many artificial vision systems have been motivated by the image sensing capabilities of biological vision systems. One such mechanism is scene sampling, motivated by the inherent structure of the retina. Photoreceptors in the retina are distributed to provide high resolution on the central part of the retina (fovea) with decreasing resolution towards the periphery. This has motivated the log-polar image geometry. When compared to the usual cartesian images, the log-polar images allow faster sampling rates on artificial vision systems without reducing the size of the field of view. The log-polar transformation is a conformal mapping from the points on the
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: cartesian plane (x,y) to points in the log-polar plane ( ρ , θ ): The mapping is described by: ρ = log x 2 + y 2 θ = a tan y x ⎛ ⎝ ⎜ ⎞ ⎠ ⎟ Write a program to map an input image to the log-polar space. For visualization, ρ should be a discrete variable. You can achieve this by equating ρ =radius and ignoring the log operation. θ sampling should be a free parameter. Test your code with θ =64. This should result in a polar image of size 128x64 for an input image of size 256x256. In addition, develop a simple user interface that allows for selection of a point in an image and performs the mapping to generate the retinal image. 2. Test the developed operations with the images provided and report on the results....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern