设置Raster对象的RPC（Rational Polynomial Coefficients）参数信息。
语法
raster ST_SetRPCGeoreference(raster raster_obj, text rpc_json)参数
| 参数名称 | 描述 |
| raster_obj | Raster对象。 |
| rpc_json | JSON格式的RPC描述信息。 |
描述
支持的RPC参数如下：
| 参数名称 | 描述 | 类型 |
| lineOff | 线偏移 | float |
| sampOff | 采样偏移 | float |
| latOff | 纬度偏移 | float |
| longOff | 经度偏移 | float |
| heightOff | 高程偏移 | float |
| lineScale | 线比例 | float |
| sampScale | 采样比例 | float |
| latScale | 纬度比例 | float |
| longScale | 经度比例 | float |
| heightScale | 高程比例 | float |
| lineDenCoeff | 线分母系数（20个） | float array |
| lineNumCoeff | 线分子系数（20个） | float array |
| sampNumCoeff | 采样分子系数（20个） | float array |
| sampDenCoeff | 采样分母系数（20个） | float array |
| errBias | 错误误差。以米为单位的图像中所有点的水平轴的均方根偏差误差，未知时为-1.0。 | float |
| errRandom | 随机误差。以米为单位的图像中每个点每水平轴的均方根随机误差，未知时为-1.0。 | float |
示例
SELECT ST_RPCGeoreference(ST_setRPCGeoreference(raster_obj, '{
"lineOff": 12800.00,
"sampOff": 4008.00,
"latOff": 55.02030000,
"longOff": 27.04780000,
"heightOff": 179.000,
"lineScale": 12800.00,
"sampScale": 4008.00,
"latScale": 0.12380000,
"longScale": 0.06850000,
"heightScale": 300.000,
"lineNumCoeff": [
-2.104832000000000E-03,
-1.642616000000000E-02,
-1.027459000000000E+00,
4.182002500000000E-03,
-1.902795200000000E-03,
1.614313300000000E-05,
4.786355800000000E-04,
-2.127866900000000E-04,
6.958830700000000E-03,
-2.260572200000000E-06,
-2.225955200000000E-07,
-3.746937200000000E-07,
4.648645700000000E-04,
-1.801288800000000E-08,
5.140758300000000E-06,
7.566147900000000E-04,
-5.452440900000000E-07,
1.394079900000000E-07,
-1.828159600000000E-05,
2.421558100000000E-09
],
"lineDenCoeff": [
1.000000000000000E+00,
-5.006651300000000E-04,
-1.457830900000000E-03,
6.037474400000000E-04,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00
],
"sampNumCoeff": [
1.000000000000000E+00,
-5.006651300000000E-04,
-1.457830900000000E-03,
6.037474400000000E-04,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00
],
"sampDenCoeff": [
1.000000000000000E+00,
-5.006651300000000E-04,
-1.457830900000000E-03,
6.037474400000000E-04,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00,
0.000000000000000E+00
]
}'))
FROM raster_table
WHERE id = 1;
------------------------------
{"lineOff":12800.0,"sampOff":4008.0,"latOff":55.0203,"longOff":27.0478,"heightOff":179.0,"lineScale":12800.0,"sampScale":4008.0,"latScale":0.1238,"longScale":0.0685,"heightScale":300.0,"errBias":-1.0,"errRandom":-1.0,"lineDenCoeff":[1.0,-0.00050066513,-0.0014578309,0.0006037474.
.4,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0],"lineNumCoeff":[-0.002104832,-0.01642616,-1.027459,0.0041820025,-0.0019027952,0.000016143133,0.00047863558,-0.00021278669,0.0069588307,-0.0000022605722,-2.2259552e-7,-3.7469372e-7,0.00046486457,-1.8012888e-8,0.0.
.000051407583,0.00075661479,-5.4524409e-7,1.3940799e-7,-0.000018281596,2.4215581e-9],"sampDenCoeff":[1.0,-0.00050066513,-0.0014578309,0.00060374744,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0],"sampNumCoeff":[1.0,-0.00050066513,-0.0014578309,0.00060374744,0.0.
.,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]}该文章对您有帮助吗？