Description
Apply an explicit affine band calibration without atmospheric correction or clipping.
Precision-agriculture measurements combine spatial cells, sensor clocks, travel speeds, band signals, and application records. A correction or weighted share is meaningful only when coordinate frames, units, timestamps, and coverage bases agree. Supplied calibration and support flags remain distinct from measurements that establish them.
Apply an explicit affine band calibration without atmospheric correction or clipping.
When to use this tool
Use Multispectral Band Reflectance Gain Term when you have the stated field, sensor, map, or application records and need this correction or geometric/accounting component.
How to use the tool and how it works
- Enter digitalNumber, darkNumber, gain, intercept. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read calibratedReflectance. Use the output convention below.
Return calibratedReflectance=gain*(digitalNumber-darkNumber)+intercept.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| digitalNumber | Digital Number | Required. Finite number. |
| darkNumber | Dark Number | Required. Finite number. |
| gain | Gain | Required. Finite number. |
| intercept | Intercept | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| calibratedReflectance | Calibrated Reflectance | Required. Finite number. |
{
"input": {
"digitalNumber": 120,
"darkNumber": 20,
"gain": 0.005,
"intercept": 0.01
},
"output": {
"calibratedReflectance": 0.51
}
}Limitations and assumptions
- Gain converts digital-number units into the intended reflectance scale and intercept uses that scale. Signed inputs and results are allowed; atmospheric correction and calibration validity are not checked.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Signed zero is exported as zero.
Alternative or Complementary methods
Verify the measurement calibration, coordinate frame, spatial support, and clock convention before combining this term into a map or control workflow. Use a complete equipment or field model when geometric and operating constraints matter.
References
Similar or alternative tools
- Multispectral Gain Base Flag
Compare two explicit radiometric offset/gain ordering conventions without estimating calibration coefficients.
- Canopy Ndre One Band Pair Term
Require nearInfrared+redEdge nonzero and return ndre=(nearInfrared-redEdge)/(nearInfrared+redEdge).