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2017-02-16 03:05:30 -0600	commented question	Improper Computation of NDVI @LBerger Ideally when we apply NDVI on imaage plant should colored light grey and ground should colored dark grey. But I am getting reverse.
2017-02-16 02:37:12 -0600	received badge	● Editor (source)
2017-02-16 02:36:21 -0600	asked a question	Improper Computation of NDVI I am new to image processing. I am applying NDVI index on an image of an agricultural farm taken by drone. But the formula (NIR-Red)/(NIR+Red) is giving me wrong output (here instead of NIR we are using the blue channel). Then I came to know that the image I am using is taken by camera with NIR sensors. Would the formula differ from normal formula of NDVI?
2017-01-30 04:20:37 -0600	commented question	Image Calibration @LBerger Question is same. I want to calibrate that stitch image and apply NDVI Index on it. So, How to calibrate that stitch image using android and openCV?
2017-01-30 04:09:24 -0600	commented question	Image Calibration @LBerger I also have done stitching of images taken by drone with Bitmap and Canvas in android. Now I am stopped on processing part of it. Please guide me for this.
2017-01-30 04:04:03 -0600	commented question	Image Calibration I am working with drone image processing @LBerger
2017-01-30 04:01:05 -0600	commented question	Image Calibration @berak Processing on the phone is hard requirement.As I have coded two modules of the app on android. Can it not be done with jpegs and mobile phones?
2017-01-30 03:49:38 -0600	commented question	Image Calibration @berak Images are taken from professional camera. I have both jpeg and raw images with me. But raw processing of raw images needs space as well time. So, I choose to go with jpegs as they are less in size and processing can be perform by android app. So, I am using SD card to transfer the images from camera to phone for processing. Am I on a right path or not? Please guide me.
2017-01-30 03:26:50 -0600	commented question	Image Calibration @berak We are using jpeg images that are directly taken from SD card. Is this possible with this?
2017-01-30 03:25:38 -0600	commented question	Image Calibration @LBerger According to the link that you have posted, I need to have separate images for these three,Write? What to do when I have no other image then the main images available with me? Do I need capture images for bias frame, Dark Frame, Flat frame separately?
2017-01-27 04:48:47 -0600	commented question	Image Calibration I am to new to implementing image processing in Android using OpenCV. Now the three steps that I mentioned, I read it here: https://diffractionlimited.com/help/maximdl/MaxIm-DL.htm#Processing_Images.htm (https://diffractionlimited.com/help/m...). I dont know how to perform these on images using OpenCV. I might be wrong you can correct me also. I have mentioned it in my question just to give an idea of my surfing. am I going into right direction? Please correct me.@StevenPuttemans
2017-01-27 04:21:54 -0600	asked a question	Image Calibration I am new to image processing. I have a data set of images and I want to perform calibration on those images based on a target image. I have surfed a lot on image calibration but the majority of the results yield camera calibration.So,I I am confused as to whether these are same or different things.I have several question in my mind. Can anybody explain to me the difference between these two terms? On reading through one of the results on image calibration, I got to know that there are three steps that I need to perform: Bias Frame Calibration Dark Frame Calibration Flat Field Frame Calibration So, I want to know if these 3 steps will be possible using OpenCV or not? Also, I need to perform this in Android. For that, I have figured out that I will need to use OpenCV. I have seen the documentation of it. There are lot of things there onto documentation page. So, Which part can solve my problem. Kindly share some resource for this. Thank you so much for your time.