Analysis and Extension of the Ponomarenko et al Method, Estimating a Noise Curve from a Single Image
Please cite the reference article if you publish results obtained with this online demo.
This algorithm estimates the amount of noise (standard deviation) of the given image.

The test images are divided into three groups:

Select Data

Click on an image to use it as the algorithm input.

IMG_0181 (ISO 1600, t=1/30, JPEG)
IMG_0181 (ISO 1600, t=1/30, raw)
IMG_0187 (ISO 1250, t=1/30, JPEG)
IMG_0187 (ISO 1250, t=1/30, raw)
IMG_0230 (ISO 100, t=1/30, JPEG)
IMG_0230 (ISO 100, t=1/30, raw)
IMG_0243 (ISO 100, t=1/30, JPEG)
IMG_0243 (ISO 100, t=1/30, raw)
IMG_0971 (ISO 1250, t=1/250, JPEG)
IMG_0971 (ISO 1250, t=1/250, raw)
IMG_1046 (ISO 1600, t=1/250, JPEG)
IMG_1046 (ISO 1600, t=1/250, raw)
IMG_1056 (ISO 1600, t=1/250, JPEG)
IMG_1056 (ISO 1600, t=1/250, raw)
IMG_1067 (ISO 1600, t=1/400, JPEG)
IMG_1067 (ISO 1600, t=1/400, raw)
IMG_1070 (ISO 1600, t=1/400, JPEG)
IMG_1070 (ISO 1600, t=1/400, raw)
IMG_1108 (ISO 1600, t=1/640, JPEG)
IMG_1108 (ISO 1600, t=1/640, raw)
bag (no noise)
building1 (no noise)
computer (no noise)
dice (no noise)
flowers2 (no noise)
hose (no noise)
lawn (no noise)
leaves (no noise)
stairs (no noise)
traffic (no noise)

image credits

Upload Data

Upload your own image files to use as the algorithm input.

 

Images larger than 25000000 pixels will be resized. Upload size is limited to 10MB per image file .
TIFF, JPEG, PNG, GIF, PNM (and other standard formats) are supported. The uploaded will be publicly archived unless you switch to private mode on the result page.
Only upload suitable images. See the copyright and legal conditions for details.