Hi.
I am reading the code of extract_block_features.c, I have some questions in
the following sentence.
-----------------------------------------------------------------------------------------------------------------------------
/* colour block features */
for (i = 0; i < num_total_colour_blocks; i++) {
/* note that each block can have colmap_size values */
feature[feature_index].id = i*colmap_size + (int)block_mode[i];
/**************LINE 1*****************/
feature[feature_index].frequency = FREQ_MAX; /* binary features */
feature_index++;
}
block_features_offset = num_total_colour_blocks*colmap_size;
/**************************/
/* colour histogram features */
for (i = 0; i < colmap_size; i++) {
if (col_histogram[i] != 0) {
feature[feature_index].id = block_features_offset + i;
feature[feature_index].frequency = (freq_type)col_histogram[i];
feature_index++;
}
}
---------------------------------------------------------------------------------------------------------------------
The question is, in LINE 1 ,why don't you write "
feature[feature_index].id=i " ?
I think what you wrote makes the value of id have no continuous values,
it may like 2, 256+3, 256*2+67 etc.
Does the id of feature[i] mean someting?
And I think "block_features_offset = num_total_colour_blocks" is enough.
why need it multipy colmap_size?
"
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