I need help with OpenCV to solve the following problem:
I have some pictures of one place
Each photo compare with the first
in the photos except the first I need to draw the frames where there was a change
Can anyone advise me or recommend a prime example?
That sounds like a job for background substraction.
BackgroundSubtractorMOG2 is the class you will probably want.
I have not used it myself, but here is a tutorial
Related
So, I don't believe that exists someway to "read" a PNG through its binary code, or something like that, but I have zero knowledge on Image Processing or Computer Vision, and so, I can't be sure if that are ways to do it or not.
To be clear: I want to know if there are ways to identify the image of a Logo using an image of the Logo as reference but through methods that use only the binary of the image.
Thanks in advance
If the logo is known, and not distorted a lot (logo printed on a scarf is not as good as on a flat surface), there is technologies that can achieve that:
It is a template matching problem, see https://docs.opencv.org/4.5.2/d4/dc6/tutorial_py_template_matching.html.
I am doing a project,where I need to determine if the image is self taken or not? I am confused whether to use machine learning approach or image processing ? Machine learning approach may not give me very effective results.I am looking for image processing method.Can anyone help me out here..?? I can detect the faces in the image but that is not enough.
Machine learning will work way better in my opinion. With few exemples you should get a correct result. But it won't be perfect.
If you want something more occurate you will need other detailed. For exemple if it is a smartphone application you know if the front camera was used. Maybe another great source of data is the accelerometer because selfies are not taken the same way of regular picture.
If you have faces in the picture and another relevant indicator you probably can state that the picture is a selfie.
I don`t know how to create an image slideshow with processing. Can someone please create a slideshow for me to use as a sample? And can you briefly explain the codes using"statements"?
Since, you didn't try anything and you don't provide any code, consider the below as a beginning:
Slideshow is a list/array of images appearing at the exact position in a
specific order. At any given time, only one image must be visible.
Also, consider PIMAGE data type and image() method.
You can find more in Processing reference.
And just be creative. There is not any rule to make a slideshow. You can do it in many different ways.
I know this question is pretty basic, and I'm sorry for posting it, but I literally have spent the last hour googling and I still havent found an answer.
I coded a blackjack game using pygame, and want to convert it to wxpython mostly as a way to learn wxpython. In pygame the graphics are easy, I have a base image I display (basically just the table), and then I can just display other images on top of it as the action unfolds, for example the cards. Each time the player hits I just draw a new card in a different position. When The hand is over and I want to go to the next hand, I just display the base image again, and it covers everything up and viola! Its really simple all I have to use is blit() and pygame.display.update().
I cant seem to find anyway to do this in wxpython. All the examples I find are for drawing items in new widgets, or drawing vector graphics over an image, or opening new frames with images, etc.
any help is greatly appreciated, thank you very much.
--Daniel
The AlphaDrawing example in the wxPython demo shows how to overlap multiple drawings. This uses wx.GraphicContext / wx.GCDC. If you look at the documentation, you'll note that it has CreateBitmapFromImage and CreateBitmap methods that probably apply to what you want to do. See also the DragImage demo and the following links for related information:
wx python card game
http://rummy-py.sourceforge.net/ (look at the original that was done in wx)
I found this post, which reading the comments, does a good job of showing me want I was looking for.
Delete image in wxpython?
Hey guys. I got two images from video frames. They have a certain portion of overlap. After warping one of them, I'm currently trying to blend them together. In other words, I would like to stitch them together. But I don't know how to accomplish that. Can anybody please give me some help? Thank you!
Let's say the image data is store in 'image1_warped' and 'image2'. Appreciated your help!
The keyword here is Image Registration. The Image Processing Toolbox provides some functions for this purpose. The documentation has a some of demos as examples.
Checkout the blog post: Blend images with MATLAB,
with nice examples, and the MATLAB code.
Where the two images join apply the Photoshop clone tool (vary the percentage of opacity and size as required)