diff options
Diffstat (limited to 'src/ipa/ipu3/algorithms/agc.cpp')
| -rw-r--r-- | src/ipa/ipu3/algorithms/agc.cpp | 32 |
1 files changed, 9 insertions, 23 deletions
diff --git a/src/ipa/ipu3/algorithms/agc.cpp b/src/ipa/ipu3/algorithms/agc.cpp index 4e424857..bd02c474 100644 --- a/src/ipa/ipu3/algorithms/agc.cpp +++ b/src/ipa/ipu3/algorithms/agc.cpp @@ -58,12 +58,6 @@ static constexpr uint32_t knumHistogramBins = 256; /* Target value to reach for the top 2% of the histogram */ static constexpr double kEvGainTarget = 0.5; -/* - * Maximum ratio of saturated pixels in a cell for the cell to be considered - * non-saturated and counted by the AGC algorithm. - */ -static constexpr uint32_t kMinCellsPerZoneRatio = 255 * 20 / 100; - /* Number of frames to wait before calculating stats on minimum exposure */ static constexpr uint32_t kNumStartupFrames = 10; @@ -133,27 +127,19 @@ void Agc::measureBrightness(const ipu3_uapi_stats_3a *stats, &stats->awb_raw_buffer.meta_data[cellPosition] ); - if (cell->sat_ratio <= kMinCellsPerZoneRatio) { - uint8_t gr = cell->Gr_avg; - uint8_t gb = cell->Gb_avg; - /* - * Store the average green value to estimate the - * brightness. Even the overexposed pixels are - * taken into account. - */ - hist[(gr + gb) / 2]++; - } + uint8_t gr = cell->Gr_avg; + uint8_t gb = cell->Gb_avg; + /* + * Store the average green value to estimate the + * brightness. Even the overexposed pixels are + * taken into account. + */ + hist[(gr + gb) / 2]++; } } - Histogram cumulativeHist = Histogram(Span<uint32_t>(hist)); /* Estimate the quantile mean of the top 2% of the histogram */ - if (cumulativeHist.total() == 0) { - /* Force the value as histogram is empty */ - iqMean_ = knumHistogramBins - 0.5; - } else { - iqMean_ = cumulativeHist.interQuantileMean(0.98, 1.0); - } + iqMean_ = Histogram(Span<uint32_t>(hist)).interQuantileMean(0.98, 1.0); } /** |