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Closed 9 years ago.
when we take a video from moving vehicle backward, we will see vehicles behind you moving slowly, while the background(trees, houses, road markers) moving quite fast. Given two successive images from the video, the car behind you will not change much, but the background change a lot. I would like to consult how to automatically identify this car from the two images. They share similar position, size and all other features.
The equivalent question is how to identify the background which changes a lot.
I do know there are a bunch of algorithms to identify vehicles and have tried some of them. But is it possible to use similarity of the same vehicle in successive images to identify the vehicle?
I am using a monocular camera and updating frequency is 2Hz.
Six successive images are uploaded as a reference.
In terms of similarity, the classical way is to use histogram. Divide your graphs into small grid and computer RGB histogram for each grid. Good luck.
Related
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Closed 10 years ago.
Hey I want to create an app that is similar to these 'face juggler' apps, and other apps in which a photo is taken of the user, then you can drag an image on top to add effects. I have seen one with sunglasses, and i would like to do one with hats (for my brand).
So essentially I will need to be able to take a photo or select from library, then place it in, then add this image over the top which can be resized and moved, then I would need to export the final image to camera roll or facebook etc.
Does anybody know where I should start? I am quite new to this and couldn't find any guides or related questions
Thanks for all your help
A very useful source is the Core Image Programming Guide from Apple. In these document you will find all you have to now about image filter and image manipulation. But first you have to implement a UIImagePickerConroller. With this controller the user of your app can take a picture by using the device camera or by picking an image from the library.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
I'm working on box plot using R. I have already plotted one boxplot and now i need to put a pointer somewhere on box plot?
input<-c(1,2,3,4,5)
boxplot(input)
How to import or design an arrow image at position 1.5 on boxplot?
To place a single image on a graph look at the rasterImage function. If you want to put multiple images on the graph (possibly using them as plotting points) then the my.symbols and ms.image functions in the TeachingDemos package may be helpful.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
i wanna select two specific areas when taking a picture.other areas must be covered(eg:- taking a picture of a meter, i wanna capture the meter count and the serial number of the meter)
how to do this in Windows phone?
You can implement your own customized version of Camera Capture application with additional layer of functionality like it is demonstrated in article below. With access to camera preview buffer you can apply additional masks/filters to the regions which should not be covered.
Using Cameras in Your Windows Phone Application
Please also take a look on
Windows Phone samples for Camera and Photos
Another idea is to capture photo as is using CameraCaptureTask, then apply mask image (or do any other image processing) in CameraCaptureTask.Completed event handler
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Closed 11 years ago.
I have a problem with render to texture. The texture is mapped on each polygon instead to the whole object. Here in the Qualcomm Forum the problem described in detail again from User andreasv. Can you help me? I need to bake the texture with another program?
I had this problem in a engine I work with, for me I solved it by checking the uvw channel, on my baked objects it set it to channel 3, but on export it exported channel 1, give it a try, check the id in the faces, and in your material (the bitmap in the material you apply).
Try and set them both to using channel 1.
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.
Closed 10 years ago.
I am looking for a basic example of HTML5 <canvas> animation. For example, making a ball bounce, etc.
If someone has one I would be very grateful.
Here’s a (very) basic bouncing ball animation example:
http://html5.litten.com/simple-animation-in-the-html5-canvas-element/
Here’s a less basic example: a <canvas> cartoon:
http://www.canvasdemos.com/2009/10/09/html-5-canvas-animation/
There’s a tutorial over at Mozilla too, which includes an explanation of basic animation:
https://developer.mozilla.org/En/Canvas_tutorial
I think <canvas> is just a drawing surface, rather than something that has any animation capabilities built in. So I think you’re going to have to do a lot of the heavy lifting yourself (with the caveat that I don’t know anything about animation, so I don’t know which bits qualify as heavy lifting).