Data Fields | |
t_wv_bitplane * | plane |
(Temporary) Array of bitplanes (0 ^= highest bitplane!) | |
int | offset |
Where our coefficients start in t_wv_channel.reordered_channel. | |
int | size |
Number of relevant wavelet coefficients in this block. | |
unsigned char | num_planes |
Number of bit-planes needed to encode the block. |
In this context, a block refers to the detail coefficients of a particular wavelet decomposition level. For example, a 512x512 image is first decomposed into a 256x256 average (this is then again decomposed recursively) and 3 256x256 detail coefficients. These 3 256x256 detail coefficients make up a so-called block.