satellite images exporting problem

2017 11 11
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更新时间：2021 12 11
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when i processing the satellite images in matlab (calculate Toa reflectance) the pixel value result is correct but when i export the images in tiff format, images coordinate system and georeference are loss and pixel values are change. Help please

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Walter Roberson
Walter Roberson 2017-11-11
How are you doing the exporting?
Bijoy Gayen
Bijoy Gayen 2017-11-11
imwrite(TOA7,'I:/matlab test','.tif');
Image Analyst
Image Analyst 2017-11-11
What is the class of TOA7? uint8? double?
Bijoy Gayen
Bijoy Gayen 2017-11-11
B7=imread('I:\PATH = 140 ROW = 44\LC81400442016100LGN00_B7.TIF');
TOA7=double((double(B7)*0.00002)-0.1);
imwrite(TOA7,'I:/matlab test','.tif');
Image Analyst
Image Analyst 2017-11-11
If you want to save as double, then use save() to save into a .mat file, or else maybe try the TIFF class. I don't think imwrite likes double images.
Bijoy Gayen
Bijoy Gayen 2017-11-11
when i save the images after calculation TOA7(pixel values range -0.1 to 1.56) the pixel values of TOA7 are change and the coordinate system and georeference are loss.The pixel range change into 0 to 245.
Aishwarya V
Aishwarya V 2021-12-11
Hi....How to export satellite images processed in matlab without losing geolocation information?..

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