Patent ID: 11949909
Assignee: QUALCOMM INCORPORATED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. The method of claim 8, wherein determining the top threshold and the bottom threshold comprises:
deter mining a maximum histogram height value, max_box_t;
determining a minimum histogram height value, min_box_t;
determining a histogram scale value, hist_scale;
determining a histogram bin size value, hist_bin_size, according to int((max_box_t−min_box_t)/hist_scale);
generating a histogram of the points with height values in the range from min_box_t to max_box_t;
calculating a standard deviation of the histogram;
determining a bin having a maximum number of height values in the histogram; and
determining the top threshold and the bottom threshold according to offsets from the bin having the maximum number of height values, the offsets being defined according to respective multiples of the standard deviation.