AE Histogram Statistics with Weights
The AE module provides the 1024-segment histogram statistics. The following table describes the mapping between the addresses and data for reading the histogram statistics of zones 0−1023.
Memory Address |
Zone |
Memory Read Data |
|
|---|---|---|---|
[31:29] |
[28:0] |
||
0 |
0 |
0 |
Number of pixels whose value is 0 |
1 |
1 |
0 |
Number of pixels whose value is 1 |
2 |
2 |
0 |
Number of pixels whose value is 2 |
3 |
3 |
0 |
Number of pixels whose value is 3 |
... |
|||
1022 |
1022 |
0 |
Number of pixels whose value is 1022 |
1023 |
1023 |
0 |
Number of pixels whose value is 1023 |
The AE supports the four-plane mode. In four-plane mode, the AE provides the 4-channel 256-segment histogram statistics (0–255). The following table lists the mapping between the addresses and data for reading the histogram statistics.
Memory Address |
Zone |
Memory Read Data |
|
|---|---|---|---|
[31:29] |
[28:0] |
||
0 |
0 |
0 |
Number of pixels with the value 0 in channel B |
1 |
1 |
0 |
Number of pixels with the value 1 in channel B |
... |
|||
255 |
255 |
0 |
Number of pixels with the value 255 in channel B |
256 |
256 |
0 |
Number of pixels with the value 0 in channel Gb |
... |
|||
511 |
511 |
0 |
Number of pixels with the value 255 in channel Gb |
512 |
512 |
0 |
Number of pixels with the value 0 in channel Gr |
... |
|||
767 |
767 |
0 |
Number of pixels with the value 255 in channel Gr |
768 |
768 |
0 |
Number of pixels with the value 0 in channel R |
... |
|||
1022 |
1022 |
0 |
Number of pixels with the value 254 in channel R |
1023 |
1023 |
0 |
Number of pixels with the value 255 in channel R |