EPC660 Datasheet, PDF (57/116 Pages) Espros Photonics corp – 3D TOF Imager 320 x 240 Pixel

Table 25 shows a quality decision matrix as a summary of the validity and quality parameters for the distance measurement.
Step Sensor status
1 Saturation or bright ob-
ject within scene
2 Saturation or bright ob-
ject within scene
4 No object detected
3 Overexposure or bright
object within scene
4 No object detected
5 Too much ambient-light
6 Object detected
Pixel
saturation
XSYNC_
SAT
flag set
Maximum
signal
min. one
| DCSx |
Noise
level
all
| DCSx |
Modulated light amplitude
ATOF PP
Ratio ambient to
modulated light
AMR
no
> 2'000 LSB
no
< 2'000 LSB < 25 LSB
no
< 2'000 LSB > 25 LSB > 2'000 LSB
no
< 2'000 LSB > 25 LSB < 25 LSB
no
< 2'000 LSB > 25 LSB 25 LSB … 2'000 LSB
> 60 db (or > 70 dB)
no
< 2'000 LSB > 25 LSB Good: 100 … 2'000 LSB < 60 db (or < 70 dB)
Enough: 25 … 100 LSB
Table 25: Quality decision matrix
Action
Repeat measurement with
decreased integration time and/or illumination
Repeat measurement with
decreased integration time and/or illumination
Repeat measurement with
increased integration time or illumination
Repeat measurement with
decreased integration time or illumination
Repeat measurement with
increased integration time or illumination
Repeat measurement with
increased integration time or illumination
No action necessary
© 2017 ESPROS Photonics Corporation
Characteristics subject to change without notice
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Datasheet_epc660-V1.09
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