
5.1 Reduction of Image Size
5.1.3
Vertical Decimation
Decimation reduces the number of pixels in y-direction. Decimation in y-direction transfers
every n
th
row only and directly results in reduced read-out time and higher frame rate
respectively.
Decimation can also be used together with ROI or MROI. In this case every ROI
should have a height that is a multiple of the decimation setting. E.g. if decima-
tion=2, then the height of every ROI should be a multiple of 2.
The available decimation values are 2, 6, 10, 14, ...
Fig. 5.4 shows decimation on the full image. The rows that will be read out are marked by red
lines. Row 0 is read out and then every n
th
row.
(
0 , 0 )
( x
m a x
, y
m a x
)
Figure 5.4: Decimation in full image
Fig. 5.5 shows decimation on a ROI. The row specified by the Window.Y setting is first read out
and then every n
th
row until the end of the ROI.
Fig. 5.6 shows decimation and MROI. For every MROI region m, the first row read out is the row
specified by the MROI<m>.Y setting and then every n
th
row until the end of MROI region m.
An example of a high-speed measurement of the elongation of an injection needle is given in
Fig. 5.7. In this application the height information is less important than the width
information. Applying decimation 2 on the original image on the left-hand side doubles the
resulting frame rate.
.
MAN069 12/2018 V1.1
37 of 123
Содержание MV1-D4096 Series
Страница 1: ...Photonfocus MV1 D4096 Camera Series CMOS camera with GigE interface MAN069 12 2018 V1 1 ...
Страница 10: ...1 Preface 10 of 123 MAN069 12 2018 V1 1 ...
Страница 12: ...2 Introduction 12 of 123 MAN069 12 2018 V1 1 ...
Страница 16: ...3 How to get started GigE G2 Figure 3 3 PFInstaller components choice 16 of 123 MAN069 12 2018 V1 1 ...
Страница 32: ...4 Product Specification 32 of 123 MAN069 12 2018 V1 1 ...
Страница 94: ...6 Hardware Interface 94 of 123 MAN069 12 2018 V1 1 ...
Страница 108: ...7 Software 108 of 123 MAN069 12 2018 V1 1 ...
Страница 110: ...8 Mechanical Considerations 110 of 123 MAN069 12 2018 V1 1 ...
Страница 112: ...9 Troubleshooting 112 of 123 MAN069 12 2018 V1 1 ...
Страница 118: ...12 Support and Repair 118 of 123 MAN069 12 2018 V1 1 ...
Страница 120: ...13 References 120 of 123 MAN069 12 2018 V1 1 ...
Страница 124: ...B Camera Revisions 124 of 123 MAN069 12 2018 V1 1 ...