Filename a string variable representing the path where to save the file.
Save mat as image opencv.
Then we ll save the transformed image in a file using imwrite.
My camera is d435i and i use opencv 3 4 7 realsense sdk 2 0 in ubuntu 18 04.
Also we ll transform the loaded image to greyscale format using cvtcolor.
This example by daniel baggio was taken directly from this stackexchange answer but has been reposted for visibility.
In this chapter we ll learn how to load an image using imread.
Or use the universal filestorage i o functions to save the image to xml or yaml format.
When working with opencv python images are stored in numpy ndarray.
While working with images in image processing applications it is quite often that you need to store intermediate results of image transformations or save the final resulting image.
For an introduction to using softwarebitmap see create edit and save bitmap images.
To save an image to the local file system use cv2 imwrite.
If the format depth or channel order is different use mat convertto and cv cvtcolor to convert it before saving.
Converting an mat object to an bufferedimage object.
After i align the color and depth stream i use mat depth image to save the depth data of the depth frame and use imwrite to save mat depth image to depth png then use imshow to show the mat.
Handling images is the basic building blocks of the opencv library and we should understand how to manipulate the images on a pixel level.
N dimensional dense array class.
This can be used by a graphics object to draw the image.
Multiple images vector of mat can be saved in tiff format see the code sample below.
To write an image repeat the first three steps from the previous example.
The class mat represents an n dimensional dense numerical single channel or multi channel array.
Opencv python save image.
Mat a mat object representing the image to be written.
To see how to use the opencv helper component shown in this article with mediaframereader to implement real time image processing of frames from a camera see use opencv with mediaframereader.
