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Feeds
Video stabilization using point feature method
No, point feature extraction is, as the name says, the extraction of features of a point. You dont have a motion estimation from...
plus de 6 ans il y a | 0
| A accepté
how i can capture and then save many images using kinect camera at one time?
Right now you have a fixed N, in this case N=4 and if you run your code you will save the images to my_new1.png, my_new2.png, an...
plus de 6 ans il y a | 0
| A accepté
Get Real distance value in an image.
With a given reference its possible. Either calibrate your camera to that reference and dont move it afterwards or have a known ...
plus de 6 ans il y a | 0
using trainCascadeObjectDetector for online game
This depends on the object you want to detect, 40 pictures might not nearly be enough. Cascade object detector can only detect o...
plus de 6 ans il y a | 0
Jumping from one random frame to another random frame with continuity.
Use the video file reader <https://de.mathworks.com/help/matlab/import_export/read-video-files.html> to get your frames from the...
plus de 6 ans il y a | 1
Eliminate point of view effects on a surface before processing the image.
If you have the camera calibration toolbox at you hand you can simply use that to calibrate your camera with the checkerboard. ...
plus de 6 ans il y a | 0
| A accepté
HOW TO FIND OUT MAXIMUM TEMPERATURE FROM EACH FRAME(My video has 225 frames) USING MATLAB ?
See <https://de.mathworks.com/help/images/ref/mat2gray.html> mat2gray() converts a matrix to a grayscale image. If you have a...
plus de 6 ans il y a | 0
| A accepté
Hi, I am trying to put a box around the car and have it's confidence level placed on top of the box, how can I do that?
Error using insertObjectAnnotation Expected input number 3, POSITION, to be one of these types: numeric Instead its type w...
plus de 6 ans il y a | 0
How can I get model coordinates from pixel coordinates, using an uncalibrated camera, if I know the model coordinates of a few pixels?
Lets assume you have point P=[X; Y; Z], then your camera coordinates of that point would be x'= X/Z and y'=Y/Z. You then project...
plus de 6 ans il y a | 1
| A accepté
Question about how to create cameraparams object
You already linked the answer to your question: <https://www.mathworks.com/help/vision/ref/cameraparameters.html> If you get...
plus de 6 ans il y a | 0
Hey there, I hava a question concerning tracking of dots in multiple pictures...
Here are some links which might help you: <https://de.mathworks.com/help/vision/ref/vision.pointtracker-system-object.html> ...
plus de 6 ans il y a | 0
eyes and mouth edges from a Image
Take a look at this already asked question, the code there is nearly what you are looking for: <https://de.mathworks.com/matlab...
plus de 6 ans il y a | 0
How to use vision.PointTracker with ImageLabeler?
The vision.PointTracker does, as the name implies, tracks points (with KLT-algorithm). <https://de.mathworks.com/help/vision/...
plus de 6 ans il y a | 0
Specifications of Checkerboard for calibration for camera Calibration
Do you use the camera calibrator app from MATLAB? This makes it easy to calibrate the camera. The only thing you need to know...
plus de 6 ans il y a | 0
Image processing while video streaming
If this is your code then of course you will only have shown the first picture, since there is no loop to show the new image. Yo...
plus de 6 ans il y a | 1
How to perform Geometric Transformations on live images i.e., on video ?
Create a camera object. Create a video player object. Take snapshots in a loop and process them, then step through the pr...
plus de 6 ans il y a | 1
| A accepté
Question
MATLAB Coder global variable error
Im trying to use the MATLAB coder to generate code from my function. When i check for errors, i get a "Could not find initial...
plus de 6 ans il y a | 1 réponse | 0
0
réponseDifferentiate cars and motorcycles in image processing
Depending on your surrounding it might be possible. You could use a cascade object detector and train it to recognize motorcy...
plus de 6 ans il y a | 0
How can I take a snapshot from USB camera and then analyze it?
First install the support package "MATLAB Support Package for USB Webcams" ( <https://de.mathworks.com/matlabcentral/fileexchang...
plus de 6 ans il y a | 1
how to find which portion of the image having high contrast ?
You might want to take a look at this: <https://de.mathworks.com/help/matlab/ref/colormap.html> Also all your questions subm...
plus de 6 ans il y a | 0
what is wrong with this code??
imshow(insertObjectAnnotation(J1, 'rectangle', bboxes, labels)); <https://de.mathworks.com/help/vision/ref/insertobjectanno...
plus de 6 ans il y a | 0
processing on a live webcam streaming video???
You way to do it would be: 1: Create a webcam object EDIT: or create a cam object 2: You can get screenshots/snapsho...
plus de 6 ans il y a | 0
Can I undo undistortImage?
I would not recommend to try this. When you use undistortImage, some information might get lost due to the process. If you now t...
plus de 6 ans il y a | 0
how can I measure the distance between camera and object usingle single camera
Without a properly calibrated camera and a reference object of some sort this is not possible. You can estimate the distance wit...
plus de 6 ans il y a | 2
| A accepté
Camera calibration using camera extrinsic parameters
You can use the Camera Calibration App: <https://de.mathworks.com/help/vision/ug/single-camera-calibrator-app.html> Or you ca...
plus de 6 ans il y a | 0
¿Why the webcam changes its parameter everytime i start running the code?
This is normal behavior of most cameras. They have initial starting values which are used when you connect the camera. Now i...
plus de 6 ans il y a | 0
How can I convert pixel coordinate to micrometer in x and y axis in an image?
Your idea is correct. Take a reference object from which you know the exact measurements and convert that to the pixel lenght. N...
plus de 6 ans il y a | 0
How read multiple image to Matlab memory
You could use the the Image Batch Processor if you have it at hand: <https://de.mathworks.com/help/images/batch-processing-usin...
plus de 6 ans il y a | 0
| A accepté
I want to load a video and extract frames from it, save them and then use rgb2gray, edge detection and matching on specific frames...what will be the MATLAB commands for it??
To load a video: videoFileReader = vision.VideoFileReader('Video.avi'); Take a frame from the video: videoFrame = step(v...
plus de 6 ans il y a | 1
| A accepté
how can i acess single lens/camera of a stereo camera in matlab?
If you can take split images for left and right just do that and add them up to your own video stream. You can run a loop, wi...
presque 7 ans il y a | 1
| A accepté
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