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Hi TI experts,
I found that there are a lot of noises which show as dark spot under very dark scene, as can be seen in the picture below:
Do you know what cause the dark spot noises?
And I wonder that why it is dark spot not white spot?
The SDK version is 8.6, the RAW and YUV and video files are attached here:
Hi Chau,
Is NSF4 enabled?
Yes, NSF4 is enabled.
Is this before or after NSF4 tuning?
This is after NSF4 tuning, and there is the NSF4 xml:
<?xml version="1.0" encoding="utf-8"?>
<VISS_NSF4_CFG xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<!--this is comment-->
<dcc_name>viss_nsf4_cfg</dcc_name>
<dcc_header>
<camera_module_id> 233 </camera_module_id>
<dcc_descriptor_id> 21 </dcc_descriptor_id>
<algorithm_vendor_id> 1 </algorithm_vendor_id>
<tunning_tool_version> 0 </tunning_tool_version>
</dcc_header>
<!--=======================================================================-->
<typedef>
<cfg_nsf4v_vars type="struct">
<enable type="int32"> </enable> <!-- enable nsf4-->
<mode type="int32"> </mode>
<shading_gain type="int32"> </shading_gain>
<u1_knee type="int32"> </u1_knee>
<tn1 type="int32"> </tn1>
<tn2 type="int32"> </tn2>
<tn3 type="int32"> </tn3>
<noise_thr_x type="int32[4][12]"> </noise_thr_x>
<noise_thr_y type="int32[4][12]"> </noise_thr_y>
<noise_thr_s type="int32[4][12]"> </noise_thr_s>
<shd_x type="int32"> </shd_x>
<shd_y type="int32"> </shd_y>
<shd_t type="int32"> </shd_t>
<shd_kh type="int32"> </shd_kh>
<shd_kv type="int32"> </shd_kv>
<shd_gmax type="int32"> </shd_gmax>
<shd_set_sel type="int32"> </shd_set_sel>
<shd_lut_x type="int32[2][16]"> </shd_lut_x>
<shd_lut_y type="int32[2][16]"> </shd_lut_y>
<shd_lut_s type="int32[2][16]"> </shd_lut_s>
<wb_gains type="int32[4]"> </wb_gains>
</cfg_nsf4v_vars>
</typedef>
<!--=======================================================================-->
<use_case val="1023">
<n-space>
<region0 class="0">
<colortemperature val="2" min="0" max="20000"> </colortemperature>
<exposure val="1" min="0" max="10000000"> </exposure>
<gain val="0" min="0" max="26"> </gain>
</region0>
<region1 class="1">
<colortemperature val="2" min="0" max="20000"> </colortemperature>
<exposure val="1" min="0" max="10000000"> </exposure>
<gain val="0" min="27" max="33"> </gain>
</region1>
<region2 class="2">
<colortemperature val="2" min="0" max="20000"> </colortemperature>
<exposure val="1" min="0" max="10000000"> </exposure>
<gain val="0" min="34" max="37"> </gain>
</region2>
<region3 class="3">
<colortemperature val="2" min="0" max="20000"> </colortemperature>
<exposure val="1" min="0" max="10000000"> </exposure>
<gain val="0" min="38" max="40"> </gain>
</region3>
<region4 class="4">
<colortemperature val="2" min="0" max="20000"> </colortemperature>
<exposure val="1" min="0" max="10000000"> </exposure>
<gain val="0" min="41" max="55"> </gain>
</region4>
<region5 class="5">
<colortemperature val="2" min="0" max="20000"> </colortemperature>
<exposure val="1" min="0" max="10000000"> </exposure>
<gain val="0" min="56" max="1024"> </gain>
</region5>
</n-space>
<parameter_package>
<cfg_nsf4v_dcc type="cfg_nsf4v_vars">
{
1, //enable
16, //mode: 0 => nsf3 2x2 mode, 1~31 => nsf4 2x2 mode
0, //shading gain enable
32, // U1 knee points for U, U0.6 (0 ~ 63)
64, // Tn1 scaling factor, U3.5 (1.0 = 32)
32, // Tn2 scaling factor, U3.5 (1.0 = 32)
16, // Tn3 scaling factor, U3.5 (1.0 = 32)
// Threshold parameters
//noise_thr_x
{
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
},
//noise_thr_y
{
{ 0, 5, 10, 20, 152, 404, 657, 1010, 1212, 1414, 1616, 1818 },
{ 0, 5, 10, 20, 152, 404, 657, 1010, 1212, 1414, 1616, 1818 },
{ 0, 5, 10, 20, 152, 404, 657, 1010, 1212, 1414, 1616, 1818 },
{ 0, 5, 10, 20, 152, 404, 657, 1010, 1212, 1414, 1616, 1818 },
},
//noise_thr_s
{
{ 160, 53, 27, 88, 126, 63, 88, 51, 51, 51, 51, 51 },
{ 160, 53, 27, 88, 126, 63, 88, 51, 51, 51, 51, 51 },
{ 160, 53, 27, 88, 126, 63, 88, 51, 51, 51, 51, 51 },
{ 160, 53, 27, 88, 126, 63, 88, 51, 51, 51, 51, 51 },
},
// Shading gain parameters
0, //shd_x
0, //shd_y
0, //shd_t
0, //shd_kh
0, //shd_kv
0, //shd_gmax
0, //shd_set_sel
//shd_lut_x
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//shd_lut_y
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//shd_lut_s
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//wb_gains
{512, 512, 512, 512}
}
</cfg_nsf4v_dcc>
</parameter_package>
<parameter_package>
<cfg_nsf4v_dcc type="cfg_nsf4v_vars">
{
1, //enable
16, //mode: 0 => nsf3 2x2 mode, 1~31 => nsf4 2x2 mode
0, //shading gain enable
32, // U1 knee points for U, U0.6 (0 ~ 63)
64, // Tn1 scaling factor, U3.5 (1.0 = 32)
32, // Tn2 scaling factor, U3.5 (1.0 = 32)
16, // Tn3 scaling factor, U3.5 (1.0 = 32)
// Threshold parameters
//noise_thr_x
{
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
},
//noise_thr_y
{
{ 0, 6, 12, 24, 180, 480, 780, 1200, 1440, 1680, 1920, 2160 },
{ 0, 6, 12, 24, 180, 480, 780, 1200, 1440, 1680, 1920, 2160 },
{ 0, 6, 12, 24, 180, 480, 780, 1200, 1440, 1680, 1920, 2160 },
{ 0, 6, 12, 24, 180, 480, 780, 1200, 1440, 1680, 1920, 2160 },
},
//noise_thr_s
{
{ 192, 64, 32, 104, 150, 75, 105, 60, 60, 60, 60, 60 },
{ 192, 64, 32, 104, 150, 75, 105, 60, 60, 60, 60, 60 },
{ 192, 64, 32, 104, 150, 75, 105, 60, 60, 60, 60, 60 },
{ 192, 64, 32, 104, 150, 75, 105, 60, 60, 60, 60, 60 },
},
// Shading gain parameters
0, //shd_x
0, //shd_y
0, //shd_t
0, //shd_kh
0, //shd_kv
0, //shd_gmax
0, //shd_set_sel
//shd_lut_x
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//shd_lut_y
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//shd_lut_s
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//wb_gains
{512, 512, 512, 512}
}
</cfg_nsf4v_dcc>
</parameter_package>
<parameter_package>
<cfg_nsf4v_dcc type="cfg_nsf4v_vars">
{
1, //enable
16, //mode: 0 => nsf3 2x2 mode, 1~31 => nsf4 2x2 mode
0, //shading gain enable
32, // U1 knee points for U, U0.6 (0 ~ 63)
64, // Tn1 scaling factor, U3.5 (1.0 = 32)
32, // Tn2 scaling factor, U3.5 (1.0 = 32)
16, // Tn3 scaling factor, U3.5 (1.0 = 32)
// Threshold parameters
//noise_thr_x
{
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
},
//noise_thr_y
{
{ 0, 7, 13, 26, 197, 524, 852, 1310, 1572, 1834, 2096, 2358 },
{ 0, 7, 13, 26, 197, 524, 852, 1310, 1572, 1834, 2096, 2358 },
{ 0, 7, 13, 26, 197, 524, 852, 1310, 1572, 1834, 2096, 2358 },
{ 0, 7, 13, 26, 197, 524, 852, 1310, 1572, 1834, 2096, 2358 },
},
//noise_thr_s
{
{ 224, 64, 35, 114, 164, 82, 115, 66, 66, 66, 66, 66 },
{ 224, 64, 35, 114, 164, 82, 115, 66, 66, 66, 66, 66 },
{ 224, 64, 35, 114, 164, 82, 115, 66, 66, 66, 66, 66 },
{ 224, 64, 35, 114, 164, 82, 115, 66, 66, 66, 66, 66 },
},
// Shading gain parameters
0, //shd_x
0, //shd_y
0, //shd_t
0, //shd_kh
0, //shd_kv
0, //shd_gmax
0, //shd_set_sel
//shd_lut_x
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//shd_lut_y
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//shd_lut_s
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//wb_gains
{512, 512, 512, 512}
}
</cfg_nsf4v_dcc>
</parameter_package>
<parameter_package>
<cfg_nsf4v_dcc type="cfg_nsf4v_vars">
{
1, //enable
16, //mode: 0 => nsf3 2x2 mode, 1~31 => nsf4 2x2 mode
0, //shading gain enable
32, // U1 knee points for U, U0.6 (0 ~ 63)
64, // Tn1 scaling factor, U3.5 (1.0 = 32)
32, // Tn2 scaling factor, U3.5 (1.0 = 32)
16, // Tn3 scaling factor, U3.5 (1.0 = 32)
// Threshold parameters
//noise_thr_x
{
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
},
//noise_thr_y
{
{ 0, 7, 14, 28, 212, 564, 917, 1410, 1692, 1974, 2256, 2538 },
{ 0, 7, 14, 28, 212, 564, 917, 1410, 1692, 1974, 2256, 2538 },
{ 0, 7, 14, 28, 212, 564, 917, 1410, 1692, 1974, 2256, 2538 },
{ 0, 7, 14, 28, 212, 564, 917, 1410, 1692, 1974, 2256, 2538 },
},
//noise_thr_s
{
{ 224, 75, 37, 123, 176, 88, 123, 71, 71, 71, 71, 71 },
{ 224, 75, 37, 123, 176, 88, 123, 71, 71, 71, 71, 71 },
{ 224, 75, 37, 123, 176, 88, 123, 71, 71, 71, 71, 71 },
{ 224, 75, 37, 123, 176, 88, 123, 71, 71, 71, 71, 71 },
},
// Shading gain parameters
0, //shd_x
0, //shd_y
0, //shd_t
0, //shd_kh
0, //shd_kv
0, //shd_gmax
0, //shd_set_sel
//shd_lut_x
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//shd_lut_y
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//shd_lut_s
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//wb_gains
{512, 512, 512, 512}
}
</cfg_nsf4v_dcc>
</parameter_package>
<parameter_package>
<cfg_nsf4v_dcc type="cfg_nsf4v_vars">
{
1, //enable
16, //mode: 0 => nsf3 2x2 mode, 1~31 => nsf4 2x2 mode
0, //shading gain enable
32, // U1 knee points for U, U0.6 (0 ~ 63)
64, // Tn1 scaling factor, U3.5 (1.0 = 32)
32, // Tn2 scaling factor, U3.5 (1.0 = 32)
16, // Tn3 scaling factor, U3.5 (1.0 = 32)
// Threshold parameters
//noise_thr_x
{
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
},
//noise_thr_y
{
{ 0, 8, 15, 31, 230, 612, 995, 1530, 1836, 2142, 2448, 2754 },
{ 0, 8, 15, 31, 230, 612, 995, 1530, 1836, 2142, 2448, 2754 },
{ 0, 8, 15, 31, 230, 612, 995, 1530, 1836, 2142, 2448, 2754 },
{ 0, 8, 15, 31, 230, 612, 995, 1530, 1836, 2142, 2448, 2754 },
},
//noise_thr_s
{
{ 256, 75, 43, 133, 191, 96, 134, 77, 77, 77, 77, 77 },
{ 256, 75, 43, 133, 191, 96, 134, 77, 77, 77, 77, 77 },
{ 256, 75, 43, 133, 191, 96, 134, 77, 77, 77, 77, 77 },
{ 256, 75, 43, 133, 191, 96, 134, 77, 77, 77, 77, 77 },
},
// Shading gain parameters
0, //shd_x
0, //shd_y
0, //shd_t
0, //shd_kh
0, //shd_kv
0, //shd_gmax
0, //shd_set_sel
//shd_lut_x
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//shd_lut_y
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//shd_lut_s
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//wb_gains
{512, 512, 512, 512}
}
</cfg_nsf4v_dcc>
</parameter_package>
<parameter_package>
<cfg_nsf4v_dcc type="cfg_nsf4v_vars">
{
1, //enable
16, //mode: 0 => nsf3 2x2 mode, 1~31 => nsf4 2x2 mode
0, //shading gain enable
32, // U1 knee points for U, U0.6 (0 ~ 63)
64, // Tn1 scaling factor, U3.5 (1.0 = 32)
32, // Tn2 scaling factor, U3.5 (1.0 = 32)
16, // Tn3 scaling factor, U3.5 (1.0 = 32)
// Threshold parameters
//noise_thr_x
{
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
{ 0, 64, 256, 1024, 4096, 8192, 16384, 24576, 32768, 40960, 49152, 57344 },
},
//noise_thr_y
{
{ 0, 15, 31, 61, 461, 1228, 1996, 3070, 3684, 4298, 4912, 5526 },
{ 0, 15, 31, 61, 461, 1228, 1996, 3070, 3684, 4298, 4912, 5526 },
{ 0, 15, 31, 61, 461, 1228, 1996, 3070, 3684, 4298, 4912, 5526 },
{ 0, 15, 31, 61, 461, 1228, 1996, 3070, 3684, 4298, 4912, 5526 },
},
//noise_thr_s
{
{ 480, 171, 80, 267, 384, 192, 269, 154, 154, 154, 154, 154 },
{ 480, 171, 80, 267, 384, 192, 269, 154, 154, 154, 154, 154 },
{ 480, 171, 80, 267, 384, 192, 269, 154, 154, 154, 154, 154 },
{ 480, 171, 80, 267, 384, 192, 269, 154, 154, 154, 154, 154 },
},
// Shading gain parameters
0, //shd_x
0, //shd_y
0, //shd_t
0, //shd_kh
0, //shd_kv
0, //shd_gmax
0, //shd_set_sel
//shd_lut_x
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//shd_lut_y
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//shd_lut_s
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
},
//wb_gains
{512, 512, 512, 512}
}
</cfg_nsf4v_dcc>
</parameter_package>
</use_case>
<!--=====================================================================-->
</VISS_NSF4_CFG>
I wonder that why it is dark spot not white spot?
Hi Zhili,
There is a chance that NSF4 noise thresholds (thr_y) are too low in the dark regions leading to dark spots.
You may trying increasing "thr_y" for small "thr_x" values.
While "thr_x=0", "thr_y" should be above 0.
