Description
Compare measured dental-photo scale with a supplied calibration.
Oral-health records may contain surface identifiers, annotation support, inventory or image calibration. Local count and balance rules do not verify observations, define an appropriate hygiene practice or establish a dental diagnosis.
Compare measured dental-photo scale with a supplied calibration.
When to use this tool
Use Dental Photo Scale Reference Gap when checking the stated oral-health record or measurement convention.
How to use the tool and how it works
- Enter measuredReferencePixels, referenceLength, suppliedPixelsPerUnit. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read estimatedPixelsPerUnit, calibrationGap, relativeGap. Use the output convention below.
Compare measured dental-photo scale with a supplied calibration. Require positive reference pixels, physical reference length and suppliedPixelsPerUnit; estimate pixels/length and return absolute and relative calibration gaps.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| measuredReferencePixels | Measured Reference Pixels | Required. Finite number; strictly above 0. |
| referenceLength | Reference Length | Required. Finite number; strictly above 0. |
| suppliedPixelsPerUnit | Supplied Pixels Per Unit | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| estimatedPixelsPerUnit | Estimated Pixels Per Unit | Required. Finite number. |
| calibrationGap | Calibration Gap | Required. Finite number. |
| relativeGap | estimatedPixelsPerUnit/suppliedPixelsPerUnit-1, dimensionless. | Required. Finite number. |
{
"input": {
"measuredReferencePixels": 120,
"referenceLength": 10,
"suppliedPixelsPerUnit": 10
},
"output": {
"estimatedPixelsPerUnit": 12,
"calibrationGap": 2,
"relativeGap": 0.19999999999999996
}
}Limitations and assumptions
- The calibration is not independently validated, and no clinical image or anatomical length is interpreted.
- 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. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use the relevant charting protocol and professional dental guidance for clinical interpretation, care and individual recommendations.
References
Similar or alternative tools
- Skin Image Scale Reference Ratio
Calibrate skin-image length and compare scale values.
- Skin Image Ruler Plane Offset
Apply a supplied ruler-plane correction to image length.