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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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10
tsvm_core/src/net/torvald/tsvm/GraphicsJSR223Delegate.kt
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@@ -4143,14 +4143,14 @@ class GraphicsJSR223Delegate(private val vm: VM) {
// LUMA CHANNEL: Based on statistical analysis from real video content
// LL subband - contains most image energy, preserve carefully
if (subbandType == 0) return perceptual_model3_LL(qualityLevel, level)
if (subbandType == 0) return perceptual_model3_LL(qualityLevel, level + 1)
// LH subband - horizontal details (human eyes more sensitive)
val LH: Float = perceptual_model3_LH(qualityLevel, level)
val LH: Float = perceptual_model3_LH(qualityLevel, level + 1)
if (subbandType == 1) return LH
// HL subband - vertical details
val HL: Float = perceptual_model3_HL(qualityLevel, LH)
val HL: Float = perceptual_model3_HL(qualityLevel, LH + 1)
if (subbandType == 2) return HL * (if (level == 2) TWO_PIXEL_DETAILER else if (level == 3) FOUR_PIXEL_DETAILER else 1f)
// HH subband - diagonal details
@@ -4158,7 +4158,7 @@ class GraphicsJSR223Delegate(private val vm: VM) {
} else {
// CHROMA CHANNELS: Less critical for human perception, more aggressive quantization
val base = perceptual_model3_chroma_basecurve(qualityLevel, level)
val base = perceptual_model3_chroma_basecurve(qualityLevel, level - 1)
if (subbandType == 0) { // LL chroma - still important but less than luma
return 1.0f
@@ -4284,7 +4284,7 @@ class GraphicsJSR223Delegate(private val vm: VM) {
tilesX = 1
tilesY = 1
} else {
// Standard mode: multiple 280x224 tiles
// Standard mode: multiple 280x224 tiles (supported for backwards compatibility only)
tilesX = (width + TILE_SIZE_X - 1) / TILE_SIZE_X
tilesY = (height + TILE_SIZE_Y - 1) / TILE_SIZE_Y
}