Kaya Instruments JetCam, Руководство пользователя

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2 0 H a M e s i l a S t . , N e s h e r 3 6 8 8 5 2 0 , I s r a e l
P O B 2 5 0 0 4 , H a i f a 3 1 2 5 0 0 1 , I s r a e l
T e l : ( + 9 7 2 ) - 7 2 - 2 7 2 3 5 0 0 F a x : ( + 9 7 2 ) - 7 2 - 2 7 2 3 5 1 1
www.kayainstruments.com Page no. 30 | Configuration Interface
7.6 LUT control
The LUT Control can be used to re-map the camera linear output in different manner. Mostly to compensate for
the non-linear scene emission.
LUT configuration typical applications include enhancing gamma or image contrast, brightness changes, gray value
spreading, setting individual gradation curves, etc.
Figure 27 – LUT Control category in GenICam Browser
7.6.1 LUT Control XML Parameters
Parameter Description
Gen<i>Cam
name
Type
Possible values Remarks
Value Gen<i>Cam name
Gen<i>Cam Category: LUTControl
LUT Selector Selects which LUT to control LUTSelector Enumeration
(Selector)
0 Red
1 Green
2 Blue
0xFF All
LUT Enable Activates the selected LUT LUTEnable [LUTSelector] Boolean 0 - false
1 - true
LUT Index Control the index (offset) of
the coefficient to access in the
selected LUT LUTIndex [LUTSelector] Integer Max. 4095
LUT Value Returns the Value at entry
LUTIndex of the LUT selected
by LUTSelector LUTValue [LUTSelector]
[LUTIndex] Integer Max. 4095
LUT Value All Accesses all the LUT
coefficients in a single access
without using individual
LUTIndex LUTValueAll [LUTSelector] IRegister
Table 19 – LUT Control parameters
7.6.2 LUT pixel re-map algorithm
Each index at the LUT corresponds to the pixel value and the LUT value at this index corresponds to the value that
the pixels should be replaced with. The applied valid LUT index and corresponding value will be re-mapped
according to selected pixel bitness. i.e For 8 bit the applied indexes will be 0-255, for 10 bit the applied indexes
will be 0-1023, for 12 bit the applied indexes will be 0-4095.
Pixel value is replaced according to the following equation:
𝑃
𝑟𝑒𝑑
(𝑥, 𝑦) = 𝐿𝑈𝑇
𝑟𝑒𝑑
[𝑃
𝑟𝑒𝑑
(𝑥, 𝑦)]
𝑃
𝑔𝑟𝑒𝑒𝑛
(𝑥, 𝑦) = 𝐿𝑈𝑇
𝑔𝑟𝑒𝑒𝑛
[𝑃
𝑔𝑟𝑒𝑒𝑛
(𝑥, 𝑦)]
𝑃
𝑏𝑙𝑢𝑒
(𝑥, 𝑦) = 𝐿𝑈𝑇
𝑏𝑙𝑢𝑒
[𝑃
𝑏𝑙𝑢𝑒
(𝑥, 𝑦)]
Where P(x,y) is the pixel at offset X in horizontal and Y in vertical, of specific color.