Legacy ImageMagick Discussions Archive

Thanks for your reply....

I choose gabor filter for extracting phase information,but i dont know whether gabor filter is applied in spatial domain or frequency domain.

please guide me how can i use gabor filter...

Hi.. My aim is to extract the phase information in images,but i dont have idea about the phase information. I searched many documents to understand the phase information,but they are very complicated to understand. please any one explain or give any URL for understanding of phase information in image.

Hi..

My aim is to extract some features from images by using Gabor filter . But I don't know which are the features? should I use all pixels as the features?

please anyone guide me how to apply gabor filter on images..

Thanks in advance..

Hai..

To clearly view the shapes and sudden intensity change ,I need to improve the contrast in my processing image.

For contrast enhancement i have used Histogram Equalization.But i didn't get expected output.

please guide me how to achieve contrast enhancement.

Hi... I am new to image processing. My original image size is 640x480, i need to cut it into 400x400 without losing my region of interest. My region of interest having low pixel intensity values and around this area having high intensity value. Ex:Eye image,my region of interest is pupil and iris po...

Thanks for your reply... I already used hough transform and another method which you mentioned above(assume set of centers and radius and draw) ,but it produced poor output. My Region Of Interest(outer circle - inner circle) is located between these two circles.I want to separate that particular are...

Thanks for your reply... But i need find the parameter of circles by program (c or c++)not manually.my project is purely based on image processing. I need to find whether input image having circles or not ,if this having circles means have to find circles parameter. Input image having two concentric...

Hai...

I have a image with two circles.i need to find the center and radius of these two circles.

I tried hough transform but it wont produces exact output.

please guide me how to find center and radius of these two circles in my image.

Hi... I have faced a problem in preprocessing step in iris Extraction. Algorithm used for iris extraction works good for some images. For my images it produced poor output(Ex: Hough Transform could not find circle in my image). Is there any step apply before smoothening the image?? My algorithm work...

Thanks for your reply...

I don't have any prior knowledge in mat lab. I want to develop my code in c language.

could you please explain the logic to find points on edge...

Thanks for your reply... But how do you find the three points [ (337,525), (360,526), (315,528)]. Only i have black edges(circles) on white background,i don't know the any parameters of circles. I have only image with pixel value is 0 for edges(circles) and 255 for white background,from that how can...

Hi I am new to Image processing. I have edge detected image,it have two circles. I have to find the center and radius of two concentric circles. I choose the hough transform for that detection. For proceeding hough transform i should know the two or three points that lies on the circumference of cir...

Thank you for your reply.

I have changed the kernel value (kernel value taken from the link provided in the previous reply) in my coding, it works better.

Please guide me how to set the kernel value.

Hi everyone, I'm new to image processing. I'm trying to find the edge in the images using sobel algorithm. I'm facing one problem. i can able to detect the edge for the square image only. If the width and height of the image varies, the output is poor. I have written the sobel algorithm in c to dete...