Image data processing method and apparatus

G - Physics – 06 – T

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G06T 1/00 (2006.01) G06T 9/00 (2006.01) H04N 7/26 (2006.01) H04N 7/30 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2048204

The present invention relates to an image data reconstructing apparatus for reconstructing an original image by dividing image data into a plurality of blocks each including NXN picture elements, performing two-dimensional orthogonal transform on each of said blocks, quantizing and encoding the result of said transform, decoding the encoded result, dequantizing and two-dimensional inverse orthogonal transforming the above result, wherein an operation associated with the multiplication is skipped if a multiplication by zero is detected when two-dimensional inverse orthogonal transform is performed. Before performing dequantization, two block volume of buffer is provided before or after performing two-dimensional inverse orthogonal transform for executing a pipeline process. Furthermore, two-dimensional inverse orthogonal transform is performed by repeating two times a process of one-dimensional inverse orthogonal transform and matrix transposition, thus the matrix transposition being performed as the result of one-dimensional inverse orthogonal transform which is stored in buffer.

La présente invention porte sur un appareil de reconstruction de données d'imagerie qui est utilisé pour reconstruire une image originelle en divisant ces données d'imagerie en une pluralité de blocs contenant chacun N x N éléments d'image, en effectuant une transformation orthogonale bidimensionnelle sur chacun de ces blocs, en quantifiant et en codant le résultat de cette transformation, en décodant le résultat codé, en déquantifiant le résultat décodé et en le soumettant à une transformation orthogonale bidimensionnelle inverse dans laquelle toute opération de multiplication par zéro détectée n'est pas exécutée. Avant la déquantification, un volume de tamponnage de deux blocs est rendu disponible avant ou après la transformation orthogonale bidimensionnelle inverse pour l'exécution d'un processus pipeline. De plus, cette transformation inverse est effectuée en exécutant deux fois un processus comportant une transformation orthogonale unidimensionnelle inverse et la transposition d'une matrice, cette transposition résultant de la transformation orthogonale unidimensionnelle inverse stockée dans le tampon.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Image data processing method and apparatus 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 data processing method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image data processing method and apparatus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1481061

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.