
TS3 User Manual
11S-3000M
page 93
Application Notes
Application Note 1: Histograms
Histograms are available on the TS3 to help the user assess the lighting and
c
olor balance of the scene
framed by the camera. This App Note is provided to help the TS3 user understand the information
provided by histograms and to o
ff
er some basic guidance on their use.
Histograms are available on cameras with Mono and Color sensors. Histograms for Color cameras use
Red, Green, and Blue lines to represent the RGB pixel values, while histograms for Mono cameras use
a single black line to represent all pixel values.
Note: Histograms on the TS3 always shows pixel values 0-255. When the camera is recording in 10-bit
mode, the histogram uses high, med, or low 8-bits, depending on the Display setting
Mono Histograms:
The Mono histogram is a simple single-line graph. The Y-axis (verti
c
al) represents the number of
pixels. The X-axis (horizontal) represents pixel values. The fi
r
st thing to understand is that the
histogram o
ff
ers quanti
t
ati
v
e information only; it includes no sp
a
tial i
n
formation. Looking
a
t a
histogram gives you no idea of the location of brig
h
t or dark pixels in the image.
A histogram of a perfect linear gradient, regardless of its orientation
w
ould be a straight horizontal
line because there would be exactly the
same number of pixels of each value.
The histogram of a perfect mono-tonal image, is a straight verti
c
al line because all of the pixels have
Figure 10-1: Histogram: Linear Gradient
Figure 10-2: Histogram: Mono-tonal
Содержание eosens TS3
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