G - Physics – 06 – T
Patent
G - Physics
06
T
G06T 5/10 (2006.01) H04N 5/20 (2006.01) A61B 6/00 (2006.01)
Patent
CA 2427529
There are provided an image processing apparatus and method. In this apparatus and method, high-frequency components are converted by multiple-frequency transformation in accordance with tone conversion used to change the dynamic range, thereby obtaining a high-quality image. For example, an original image undergoes tone conversion on the basis of a tone conversion curve, and the converted image then undergoes discrete wavelet transformation. After that, subbands obtained by discrete wavelet transformation undergo a conversion process in correspondence with the slope of the tone conversion curve.
L'invention concerne un dispositif et un procédé de traitement d'image. Une composante haute fréquence est transformée par transformation de fréquence multiplex en réponse à une transformation de gradation afin de modifier la plage dynamique et produire ainsi une image de sortie satisfaisante. Par exemple, la gradation de l'image originale est transformée en fonction d'une courbe de transformation de gradation et l'image transformée est ensuite soumise à une transformation d'ondelette discrète. Ensuite, chaque sous-bande obtenue au moyen de la transformation d'ondelette discrète est transformée en fonction de la gradation de la courbe de transformation pentue.
Canon Kabushiki Kaisha
Ridout & Maybee Llp
LandOfFree
Image processing device, image processing method, recording... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image processing device, image processing method, recording..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image processing device, image processing method, recording... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1666793