video processing command help
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Can anyone tell me what the following command does?
imgI = double(imread(imgIFile))
Thanks
0 commentaires
Réponse acceptée
Jan
le 14 Juil 2011
imglFile : String variable, which contains the name of an image file
imread: Read the image file into a Matlab array
double: convert the array to the double type.
The whole line imports the contents of the image file into a DOUBLE array. "help imread", "help double" would be helpful also.
3 commentaires
Sean de Wolski
le 14 Juil 2011
Your image is probably 8bit unsigned integer - that is, it can be any integer between 0 and 255. So, converting it to double allows it to be any value, up to 16 sigfigs between: 2.2251e-308 and 1.7977e+308
Walter Roberson
le 14 Juil 2011
Note: it might perhaps make more sense to use im2double() as that rescales the data as well as changing the data type.
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Convert Image Type dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!