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even more psychovisual model

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minjaesong
2025-09-22 01:01:15 +09:00
parent 3584520ff9
commit 28624309d7
3 changed files with 13 additions and 15 deletions
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8
video_encoder/encoder_tav.c
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@@ -911,15 +911,15 @@ static float get_perceptual_weight(tav_encoder_t *enc, int level, int subband_ty
if (!is_chroma) {
// LL subband - contains most image energy, preserve carefully
if (subband_type == 0)
return perceptual_model3_LL(enc->quality_level, level);
return perceptual_model3_LL(enc->quality_level, level + 1);
// LH subband - horizontal details (human eyes more sensitive)
float LH = perceptual_model3_LH(enc->quality_level, level);
float LH = perceptual_model3_LH(enc->quality_level, level + 1);
if (subband_type == 1)
return LH;
// HL subband - vertical details
float HL = perceptual_model3_HL(enc->quality_level, LH);
float HL = perceptual_model3_HL(enc->quality_level, LH + 1);
if (subband_type == 2)
return HL * (level == 2 ? TWO_PIXEL_DETAILER : level == 3 ? FOUR_PIXEL_DETAILER : 1.0f);
@@ -931,7 +931,7 @@ static float get_perceptual_weight(tav_encoder_t *enc, int level, int subband_ty
//// mimic 4:4:0 (you heard that right!) chroma subsampling (4:4:4 for higher q, 4:2:0 for lower q)
//// because our eyes are apparently sensitive to horizontal chroma diff as well?
float base = perceptual_model3_chroma_basecurve(enc->quality_level, level);
float base = perceptual_model3_chroma_basecurve(enc->quality_level, level - 1);
if (subband_type == 0) { // LL chroma - still important but less than luma
return 1.0f;