Can't access data using " .DateTime " string
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Laiba
el 10 de Nov. de 2024
Comentada: Star Strider
el 10 de Nov. de 2024
hey, I'm taking image processsing ccourse from coursera by MATHWORKS. but there is a problem in accessing date and time of a picture in matlab using following given method in this course. please help in this query so that i can continue my course.

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Star Strider
el 10 de Nov. de 2024
Perhaps this —
imshow(imread('peppers.png'))
metadata = imfinfo('peppers.png')
DateTime = datetime(metadata.FileModDate)
.
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Walter Roberson
el 10 de Nov. de 2024
Editada: Walter Roberson
el 10 de Nov. de 2024
According to the documentation for imfinfo()
- DNG, JPEG, and TIFF only — If filename contains Exif tags, then info might include DigitalCamera or GPSInfo (global positioning system information) fields.
So this applies only to .dng, .jpg, .jpeg, .tif, and .tiff files, and only if the file includes EXIF tags, and even then only if the EXIF tags happen to include DigitalCamera or GPSInfo . If any of these three conditions are not satisfied, the DigitalCamera field will simply not be present. It will not "be present but empty" in such cases: it will literally not be present in such cases.
I was not able to find any case that potentially included a DateTime field.
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