Rex Raleigh

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since Dec 11, 2010
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Recent posts by Rex Raleigh

good day. i hope i put this topic on the right place. anybody here knows about how this algorithm works? i've seen it's application on an applet and it basically just follows the boundaries or the edges of a certain input image. i want to know how this algorithm works and where can i start in applying it to java programs.

thank you in advance.
10 years ago
i've read some of those links that you've posted and i got the general idea behind the concept. i think implementing it in java (along with some basic image processing) is my next step, so i kinda need some help on how to start.

i've had a short experience with image processing using c++, but that was using my professor's own image processing libraries. (forgot most of it by now. that was years ago)
10 years ago
i've taken a look at the source code of imagej and i find it quite hard to understand. would you know some tutorials or basic introduction regarding image processing using java? i'll take time to study it first so i could understand imagej a bit more.

sorry i'm just a beginner at using java so i'm having quite a hard time. thanks for understanding.
10 years ago
thanks for the reply good sir. i've read the wiki article regarding edge detection and i think it's kinda tough to swallow for me in one reading. but i'll study it for the next few days or so.

the imagej was helpful, and it would help me more if i could take a look at it's source code. i currently have a project and it requires implementing edge detection on a given image input. knowing how it works in java would really be of great help to me.

on a side note, i can't seem to find the personal message button on your profile. i was hoping i could message you if it's alright.
10 years ago
any thoughts of implementing edge detection in java? i am fairly new about this topic and i need help on how this generally works in java.
10 years ago
okay i'll take a look at those methods. it would be great if you could provide samples on how to use them so i could understand them better.
10 years ago
the reason i want to do this is i'll try to represent the image as an array of coordinates. i would also try to include only selected parts of the whole picture, thus requiring me to select only certain pixels in the given image.

i'm not that familiar on how to use the BufferedImage class yet, so maybe you could enlighten me on how does it store and operate on the pixels. thanks.
10 years ago
is it possible to extract pixel values from an image and store them in a 2d array?

for example, i will load an image and then store it's pixel values to an array. lets say the image size is 100x100 pixels. the first pixel of that image should be at the coordinate (1,1) and thus, stored in an array, say, image[0][0]. from that array, i will try to make some manipulations such as comparing values and such.

i'm really not sure on how to implement this in java since i'm just starting out and re-learning the language.

10 years ago
i'm a beginner in java and i would like to ask how do you operate on images? from what i've searched, it's basically using the BufferedImage class to operate on those images.
i've seen examples such as making filters and all, and i'm quite familiar with some of those. (i've had some little image processing experience using c++)

i would like to know some basics when it comes to handling images. from loading them from a file, to storing them in arrays, and changing pixel values, etc.

thanks.
10 years ago