It's just adjusting the range with the same ratio.
For example, there is a range of numbers.
60, 61, 62, 63, 64, 65
Stretching is to extent other range, such as 0~255.
So, if we stitching 60~65 to 0~255, numbers will be like that.
60 -> 0
61 -> 51
62 -> 102
63 -> 153
64 -> 204
65 -> 255
so, in case of histogram, origin histogram will be stretched like that
image source : https://stackoverflow.com/questions/41118808/difference-between-contrast-stretching-and-histogram-equalization
then, let's look at code and result with real image.
origin input image
histogram of stretched image
Image size of origin is 320*240. Processing time is 30.96 second took. The result of stitching The resul...
As you can see in the following video, I created a class that stitching n cameras in real time. https://www.youtube.com/user/feelmare/sear...
This post is about how to copy Mat data to vector and copy vector data to Mat. Reference this example source code. printf("///////...
OpenCV Drawing Example, (line, circle, rectangle, ellipse, polyline, fillConvexPoly, putText, drawContours)line, circle, rectangle, ellipse, polyline, fillConvexPoly, putText, drawContours example source code!!. ... //http://study....
(OpenCV Study) Background subtractor MOG, MOG2, GMG example source code (BackgroundSubtractorMOG, BackgroundSubtractorMOG2, BackgroundSubtractorGMG)Background subtractor example souce code. OpenCV support about 3 types subtraction algorithm. Those are MOG, MOG2, GMG algorithms. Det...
Example source code of extract HOG feature from images, save descriptor values to xml file, using opencv (using HOGDescriptor )This example source code is to extract HOG feature from images. And save descriptors to XML file. The source code explain how to use HOGD...
This is example for background subtraction on opencv 3.2 version previously, I post 2.7 version example on here. http://study.marearts.co...
fig 1. Left: set 4 points (Left Top, Right Top, Right Bottom, Left Bottom), right:warped image to (0,0) (300,0), (300,300), (0,300) Fi...
* Introduction - The solution shows panorama image from multi images. The panorama images is processing by real-time stitching algorithm...
The MNIST dataset is a dataset of handwritten digits, comprising 60 000 training examples and 10 000 test examples. The dataset can be downl...