imwrite¶
Currency assistant 3.2.8. Saves an image to a specified file.
![Small image 2 4 0 Small image 2 4 0](/uploads/1/2/6/1/126169075/578623498.jpg)
- C++:bool
imwrite
(const string& filename, InputArray img, const vector<int>& params=vector<int>() )& params)'>¶
- Python:
cv2.
imwrite
(filename, img[, params]) → retval¶
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- C:int
cvSaveImage
(const char* filename, const CvArr* image, const int* params=0 )¶
cv.
SaveImage
(filename, image) → None¶Small Image 2.4 Camera
![SmallImage 2.4 SmallImage 2.4](/uploads/1/2/6/1/126169075/723164624.jpg)
Small Image 2.4 Free
Parameters: |
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Small Image 2.4 0
The function
imwrite
saves the image to the specified file. The image format is chosen based on the filename
extension (seeimread()
for the list of extensions). Only 8-bit (or 16-bit unsigned (CV_16U
) in case of PNG, JPEG 2000, and TIFF) single-channel or 3-channel (with ‘BGR’ channel order) images can be saved using this function. If the format, depth or channel order is different, useMat::convertTo()
, andcvtColor()
to convert it before saving. Or, use the universal FileStorage
I/O functions to save the image to XML or YAML format.Small Image 2.4 2
It is possible to store PNG images with an alpha channel using this function. To do this, create 8-bit (or 16-bit) 4-channel image BGRA, where the alpha channel goes last. Fully transparent pixels should have alpha set to 0, fully opaque pixels should have alpha set to 255/65535. The sample below shows how to create such a BGRA image and store to PNG file. It also demonstrates how to set custom compression parameters