You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
55 lines
1.7 KiB
55 lines
1.7 KiB
#if SENSOR_ID == 3
|
|
|
|
#define BGGR
|
|
|
|
#define BIT_DEPTH 10
|
|
#define PV_MAX10 1023
|
|
#define PV_MAX16 65536 // gamma curve is calibrated to 16bit
|
|
#define BLACK_LVL 64
|
|
#define VIGNETTE_RSZ 2.2545f
|
|
|
|
float combine_dual_pvs(float lv, float sv, int expo_time) {
|
|
float svc = fmax(sv * expo_time, (float)(64 * (PV_MAX10 - BLACK_LVL)));
|
|
float svd = sv * fmin(expo_time, 8.0) / 8;
|
|
|
|
if (expo_time > 64) {
|
|
if (lv < PV_MAX10 - BLACK_LVL) {
|
|
return lv / (PV_MAX16 - BLACK_LVL);
|
|
} else {
|
|
return (svc / 64) / (PV_MAX16 - BLACK_LVL);
|
|
}
|
|
} else {
|
|
if (lv > 32) {
|
|
return (lv * 64 / fmax(expo_time, 8.0)) / (PV_MAX16 - BLACK_LVL);
|
|
} else {
|
|
return svd / (PV_MAX16 - BLACK_LVL);
|
|
}
|
|
}
|
|
}
|
|
|
|
float4 normalize_pv_hdr(int4 parsed, int4 short_parsed, float vignette_factor, int expo_time) {
|
|
float4 pl = convert_float4(parsed - BLACK_LVL);
|
|
float4 ps = convert_float4(short_parsed - BLACK_LVL);
|
|
float4 pv;
|
|
pv.s0 = combine_dual_pvs(pl.s0, ps.s0, expo_time);
|
|
pv.s1 = combine_dual_pvs(pl.s1, ps.s1, expo_time);
|
|
pv.s2 = combine_dual_pvs(pl.s2, ps.s2, expo_time);
|
|
pv.s3 = combine_dual_pvs(pl.s3, ps.s3, expo_time);
|
|
return clamp(pv*vignette_factor, 0.0, 1.0);
|
|
}
|
|
|
|
float3 color_correct(float3 rgb) {
|
|
float3 corrected = rgb.x * (float3)(1.55361989, -0.268894615, -0.000593219);
|
|
corrected += rgb.y * (float3)(-0.421217301, 1.51883144, -0.69760146);
|
|
corrected += rgb.z * (float3)(-0.132402589, -0.249936825, 1.69819468);
|
|
return corrected;
|
|
}
|
|
|
|
float3 apply_gamma(float3 rgb, int expo_time) {
|
|
float s = log2((float)expo_time);
|
|
if (s < 6) {s = fmin(12.0 - s, 9.0);}
|
|
// log function adaptive to number of bits
|
|
return clamp(log(1 + rgb*(PV_MAX16 - BLACK_LVL)) * (0.48*s*s - 12.92*s + 115.0) - (1.08*s*s - 29.2*s + 260.0), 0.0, 255.0) / 255.0;
|
|
}
|
|
|
|
#endif
|
|
|