| Camera
| Imaging devices; devices that acquire images. |
| Camera Link®
| Camera Link® is a robust communications link using a dedicated cable connection and a standardized communications protocol. |
| CCD | Charge-Coupled Device: a light-sensitive chip or image sensor used in
scanners and digital cameras that converts light into proportional
(analog) electrical current. |
| CCD Back Illuminated | Means that the light is coming in the back side, rather than the front
side. To make the light hit the backside, the CCD is flipped over and
made very, very thin (about 10-15 micronst) |
CCD Bond Pads
| The pads, or 'bond pads', are how the
electrical connections are made on a CCD. The bond pads are connected
to traces (think of traces as wires) on the CCD. The trace/wire carries
the electricity to the pixels and other CCD components (amplifiers,
etc.) so that the device can function. They typicaly made of Indium,
atomic number 49. |
CCD Front Illuminated
| Light enters the front side of the device on a front-illuminated CCD.
All CCDs are front-illuminated until they are processed and become
back-illuminated. A front-illuminated CCD is thus a CCD die that has
been put into a package. Front-illuminated die are not thinned not
bump-bonded. |
| CCD readout | |
| CDS | CDS = correlated double sampling |
Charge-Coupled Device
| A charge-coupled device (CCD) is a sensor for recording images. It is any array of silicon pixels. |
| Charge Transfer Efficiency | When electrons (charge) are transferred from pixel to pixel, not every
electron makes it into the next pixel. A few electrons are left behind
in each transfer. How well this transfer is done, i.e. the ratio of how
many electrons are transferred to how many were actually detected, is
called charge transfer efficiency (CTE). Typically, this number is
around 99.9990% for good quality CCDs, where perfect charge transfer is
100%. When a lot of charge is left behind with each transfer, a device
is said to have bad CTE. If the CTE is bad enough, you can see streaks
in the image. These streaks are caused by charge/electrons being left
behind after transfer. |
| Close | Dilation followed by an erosion. Closing removes dark spots isolated in bright regions and smoothes boundaries. |
Close Proper
| Proper Close Finite and dual combination of closing and opening
operations. Proper Closing removes dark pixels isolated in bright
regions and smoothes the boundaries of dark regions. |
| CMOS | CMOS (pronounced see-moss) stands for complementary metal-oxide
semiconductor CMOS is a major class of integrated circuits. CMOS chips
include microprocessor, microcontroller, static RAM, and other digital
logic circuits. The central characteristic of the technology is that it
only uses significant power when its transistors are switching between
on and off states. Consequently, CMOS devices use little power and do
not produce as much heat as other forms of logic. CMOS also allows a
high density of logic functions on a chip. CMOS image sensors also
allow processing circuits to be included on the same chip, an advantage
not possible with CCD sensors, which are also much more expensive to
produce. |
| C-Mount | A standard lens interface used on digital cameras. It is a 1 inch diameter, |
| Coaxial Illumination |
|
Color aliasing
| Color aliasing is caused by the color filters on a single CCD camera. |
Color reproduction
| Color reproduction is the process to reproduce colors on different devices. |
| Collimation
| Involves the use of a collimating lens to yield parallel flux lines for a light source |
| Component Supplier
| A
manufacturer of machine vision (MV) optics, lighting, cameras (excluding
smart cameras/smart sensors) or third party MV software. Distributors
and OEMs are not considered component suppliers. |
| Connectivity 4/8 | Defines which of the surrounding pixels for any given pixel constitute its neighborhood. |
Connectivity - 4
| Only pixels adjacent in the horizontal and vertical directions are considered neighbors. |
Connectivity - 8
| All adjacent pixels are considered neighbors. Adjacent horizontal and vertical pixels and corner pixels |
| Conversion Adjust Dynamic | Adjusts the dynamic of the image so that the lowest intensity in the
image corresponds to the smallest value available in the new image type
and the highest value corresponds to the highest value available in the
new image data type. All pixel intensities |
Conversion Cast
| Casts the values too large to be
represented in the new data type to the largest value available and
values too small to the smallest value available. |
Conversion Shift #
| Available only for 16-bit to 8-bit
conversion. Performs Shift # to the 16-bit image prior to converting it
to an 8-bit data type. The value of Shift # depends on the dynamic of
the image. For example, if you acquired the image with a 12-bit camera
and you |
Conversion Custom
| Custom filtering using the kernel coefficients and size that you specify. |
| Convolution-Highlight Details | Convolution kernel that highlights the edges of an image. |
| Correlated double sampling | abbr. CDS |
| CS-Mount | A relatively new industry standard
used on digital cameras. It is a 1 inch 32 tpi (=threads per inch)
interface with a flange-to-image plane distance of 17.526 mm. |
| CSR | CSR = Camera_Status_Register |
| CSR architecture | A convenient abbreviation of the following reference: |
