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Table of camera models

 Parameter description

List of parameters

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Table of camera models

 Parameter description

List of parameters

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Table of camera models

 Parameter description

List of parameters

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The red highlighted parameters are used in camera modeling. The rest parameters exist only for information and comparison of different models. The majority of parameters can be chosen from lists.

 

Number

 

Unique model number in the base of models. At the moment of new model creation the number is generated automatically.

 

Name

 

Model name.

 

Producer

 

Producer of the model.

 

Key feature

 

Key feature of the model.

 

Type

TV system

 

Television system (CCIR/PAL, EIA/NTSC). Not used for digital (IP) cameras (N/A).

 

If EIA/NTSC is chosen, then maximal exposure time sets to 1/60s, or else 1/50s.

 

Fixed, PTZ, Dome, Mini

 

Standard camera, PTZ camera, dome camera, mini-camera, auto-dome camera.

 

If the Display camera type box (on the Camera and IlluminatorCamera icon tab in the Options box) is checked:

If PTZ or auto-dome camera is chosen, icons of cameras of this model in the Graphics window will correspond to PTZ camera .
If mini-camera (mini or mini-dome) is chosen, icons of cameras of this model in the Graphics window will correspond to mini-camera.
If panoramic is chosen, icons of cameras of this model in the Graphics window will correspond to panoramic camera or .

 

The icon type is influenced by Protection parameter as well.

 

Output

 

Output type of camera.

 

Color

 

B/W (black&white), color, day/night (removeble IR filter) easy day/night (permanent IR filter).

At illumination reduction day/night and easy day/night cameras are switched into black-white mode.

 

Color parameter influences 3D model color as well as spectral sensitivity of cameras to various light sourses.

 

See more: Color

 

Image sensor

Model

 

Image sensor model. If ExView HAD ™ CCD is chosen, in calculation of illumination from different light sources special factors will be used, considering increased relative IR spectral sensitivity of such image sensor.

 

See also: ExView

 

Size

 

The Size parameter determines size of the image sensor or size of active area of the image sensor.

 

See more: Image Sensor and Active area of image sensor

 

The Image sensor size can be specified by any of the following ways:

 

By format (type) in inches. For example 1/3";

 

By diagonal size of the image sensor in millimeters, in the form of dX.Y. For example: d6.0.

 

By sensor sizes in millimeters horizontally and vertically via hash, in the form of W#H.  For example: 4.8#3.6;

 

After format or length of diagonal, separated by space, you can specify the aspect ratio of the image sensor in the form of W:H. For example: 1/3" 16:9 or d6 16:9. If the aspect ratio of the image sensor is not specified, it is assumed equal to 4:3.

 

Active area size of the image sensor can be specified in millimeters horizontally and vertically via asterisk, in the form of W*H. For example: 4.8*3.6;

 

See also: Image sensor size, Specifying active area size of the image sensor

 

Number of pixels

 

Horizontal and vertical numbers of effective pixels of the image sensor.

Number of pixels is used in modeling image resolution and in calculation of person detection, identification and license plate reading areas.

Number of pixels of output image are set separately and can differ from the numbers of effective pixels of the image sensor.

 

See also: Number of pixels

 

Scan

 

Interlaced or progressive. Analog cameras always have interlaced scan. Digital cameras can have progressive scan.  

Progressive scan is preferable.

 

Modeling interlace distortion can be enabled separately in camera parameters. This parameter of camera model does not affect the simulation of interlace scan .

 

See also: One field, Interlace

 

Aspect ratio

 

Aspect Ratio of the output image (horizontal side size of the output image to the vertical side size): 4:3,  16:9 etc.

The Aspect ratio of the output image may be different from the Aspect ratio of the image sensor (can be specified in the Size field).

 

See more: Specifying the Aspect ratio on output image

 

You can enter custom values ​​from keyboard in the form of <width> :<height>, for example 11:4.

 

By specifying formats 3:4 or 9:16, you can set the so-called corridor format in which the height of the frame is larger than its width.

 

For correct simulation resolution in the corridor format you must also swap the number of pixels horizontally and vertically in the camera parameters and image processing settings.

 

Via space character after the Aspect ratio you can set the crop factor - the ratio of cropping active area size of the image sensor when the active area does not touch the edges of the image sensor. Crop factor can be set as a vulgar fraction (separated by slash) or a real number. For example 4:3 0.67 or 16:9 720/1080. If the crop factor is not specified, it is taken to be unity.

 

 

See also: Specifying the crop factor, Aspect ratio, Specifying active area size of the image sensor

 

 

Rolling shutter

Row time (microsecond)

 

This parameter is used for modeling distortion of moving 3D models and rotating Rotakin object arising from the Rolling Shutter effect.

 

As a result of Rolling Shutter work, exposure of different rows of the image sensor begins and ends sequentially at different times, which causes a horizontal shift of moving objects.

This effect occurs with many IP cameras with CMOS image sensor and doesn't occur with cameras with CCD image sensor.

 

Row time (microsecond) is the time period (in microsecond) between the beginning of exposure of adjacent rows. Unfortunately this parameter is not given in the cameras' specification. To elucidate the value of the parameter you should contact the manufacturer or measured this time in practice.

 

See also: Rolling Shutter

 

Scan direction

 

This switch deternines direction of scanning strings by the Rolling shutter. Top-down or Down-top.

 

See also: Rolling Shutter

 

 

Resolution

LPH

 

Resolution of the camera, in LPH. At 3D modeling image resolution will be limited up to the value set in this field.

 

If N/A is chosen in the field, then resolution limitation is disabled.

 

Items sharp+1, sharp+2, sharp+3 on the contrary increase image sharpness. With the help of these items it is possible to model effect of Aperture corrector.

 

Aperture corrector is automatically switched-off at insufficient illumination.

 

See also: Resolution

 

 

Contrast %

 

In the Contrast % you can specify a drop of contrast in % according to the MTF at the specified number of lines LPH.

 

Horiz. only

 

If Yes is set then only horizontal resolution is modeled, which is typical for analog cameras. If NO is set, the camera resolution will decrease horizontally and vertically in the same degree.

 

 

Maximal frame rate (fps)

 

Many of megapixel cameras have limits of frame rate, which depends on image number of pixels. The maximal frame rate of analog cameras is 25 fps (PAL) and 30 fps (NTSC).

 

For cameras of this model you can't set frame rate more than the Maximal frame rate.

 

See also: Frame rate

 

Signal/noise (Max, dB, weighted)

 

Maximum signal/noise ratio. Unweighted value.

 

See more: S/N max.

 

Sensitivity

Min. scene illumination (lux)

 

In VideoCAD it is meant, that scene reflection factor is 0.75, light source - halogen incandescent lamp (color temperature 3100 +-200K) according to Standard CEA 639 'Consumer Camcorder or Video Camera Low Light Performance'.

 

For day/night and easy day/night cameras in this box it is necessary to enter the minimum scene illumination in black-white mode.

 

For unambiguous description of sensitivity in VideoCAD, should be pointed also:

 

with what lens aperture the minimum illumination is measured;
signal/noise ratio of the image at the minimum illumination;
IRE of video signal at the minimum illumination.
exposure time at what the minimum illumination is measured.

 

In VideoCAD the minimum illumination is specified at maximum exposure time.

 

See more: Min. illum. (lx)

 

AT:

Exposure (ms)

 

Exposure time (milliseconds) at which the minimum illumination has been measured.

Parameter is sometimes given in camera specifications. For analog cameras typically value is 20ms (PAL) or 16.5ms (NTSC). For IP cameras and analog cameras with light accumulation the exposure time may be up to 200ms or more.

At modeling the exposure time assumed the truth of the Reciprocity principle, that is inversely proportional of sensitivity to the exposure time.

 

See also: at exposure (ms), modeling exposure.

 

Aperture (F)

 

Lens aperture at which the minimum scene illumination is measured.

The parameter is given in camera specification. Typical value from F1.0 up to F2.0.

 

Signal/noise (dB,unweighted)

 

Signal/noise ratio of the image at the minimum illumination, unweighted value.

 

According to CEA 639, limit value of signal/noise ratio at the minimum illumination determination is 17dB (7 times in voltage).

 

IRE

 

IRE of video signal at minimum illumination, at AGC switched on by default.

 

In VideoCAD 100 IRE corresponds full peak-to-peak amplitude of video signal and accordingly to maximum brightness amplitude on the image. 50IRE corresponds half of maximum brightness amplitude on the image, etc.  

 

The parameter is given in camera's specification. Typical value is from 30 to 50.

 

AESC  (ES, AES, shutter)

 

Exposure time limits within which electronic shutter operates.

 

The parameter is given in camera's specification. Modern PAL system cameras have exposure limits 1/50s-1/100000s. For cameras of NTSC system the maximum exposure is 1/60s. For IP cameras the maximum exposure time can be larger, up to several seconds.

 

 

See more: AESC

 

Processing

AGC (dB, Max.)

 

In this cell it is possible to specify Maximum AGC gain (dB) for cameras with switchable AGC gain: High AGC gain (High AGC, S-AGC, Super AGC) or LO AGC gain.

The box will be enabled and the set AGC limit will be considered in modeling, if the Set box is marked.

Enter in the cell maximum AGC gain if it is given in the camera's specification.

 

Typical value is 26-42dB.

 

If the camera does not have switchable AGC gain, the maximum AGC gain is calculated by the program.

 

See also: AGC

 

Gamma

 

The parameter is given in cameras' specification. Normally gamma correction degree equals 0.45. The degree equal 1 is equivalent to absence of gamma correction.

 

See more: Gamma

 

DSP

 

Digital image processing inside of camera.

 

AWB

 

Automatic white balance.

 

Compression

 

Type of compression.

 

Modeling compression can be enabled separately in camera parameters. This parameter of camera model does not affect the simulation of compression.

 

See also: Compression

 

Other

 

Any other features of image processing inside of camera.

 

Connectors (sockets, input-output, I/O)

 

Presence or absence of various purpose connectors on camera case.

 

Switches and adjusments

AESC  (shutter control)

 

Possibility of switching OFF/ON of electronic shutter and specifying its limits.

The parameter determines accessibility of shutter parameters changing in the Sensitivity and Resolution box for a camera of this model.

 

AGC

 

Possibility of switching OFF/ON of AGC and specifying its limits.

The parameter determines accessibility of AGC parameters changing in the Sensitivity and Resolution box for a camera of this model.

 

Low/high value corresponds to availability of AGC gain switch. AGC gain value in this case is specified by AGC parameter AGC (dB, max).

 

Gamma

 

Possibility of switching OFF/ON of Gamma correction and specifying its degree.

The parameter determines accessibility of Gamma parameters changing in the Sensitivity and Resolution box for a camera of this model.

 

Auto Iris DC (Direct)

 

Possibility of switching OFF/ON of Auto iris DC and specifying its level.

The parameter determines accessibility of Auto iris DC changing in the Sensitivity and Resolution box for a camera of this model.

 

BLC

 

Possibility of switching OFF/ON of Back light compensation and specifying its type.

The parameter determines accessibility of BLC parameters changing in the Sensitivity and Resolution box for a camera of this model.

 

Other 1..3

 

Any other switches and adjusments.

 

Remote control

 

Presence and type of remote control feature.

 

Lens

Model

 

Name of lens model.

 

Format

 

Lens format must be no less than camera sensor format.

 

Mount

 

Lens mount type.

 

Type

 

Lens type. If fisheye is chosen then the camera is a panoramic camera (180, 360 deg).

 

See more: Panoramic

 

IR correction

 

Lens infra-red correction. IR corrected lenses don't shift focus between normal scene illumination and IR illumination.

 

Focal length

Control

 

Focal length control type. For fixed focal length, changing focal length is locked for camera of this model.

 

Min. (mm), Max. (mm)

 

Minimal focal length - camera view angles are maximal.

Maximal focal length - camera view angles are minimal.

For a camera of this model, changing lens focal length is possible only within the limits from minimal to maximal.

 

For a lens with the fixed focal length minimal and maximal focal length are equal.

 

See also: Lens focal length

 

Angles of view (deg.)

 

Calculated angles of view of the lens. Angles of view are determined by VideoCAD, from camera sensor format  and lens focal length.

 

Real angles of view can differ from the calculated ones becouse of Lens distortion

 

Iris

Control

 

Iris control type. For fixed iris, changing aperture is locked for camera of this model.

 

See also: Iris type

 

Max. (F), Min. (F)

 

Maximum aperture = the quantity of light passing through the lens is maximal = minimal F number.

Minimum aperture = the quantity of light passing through the lens is minimal = maximal F number.

 

The more the number is, the less light passes through a lens.

 

For a camera of this model aperture changing is possible only within the limits from minimum to maximum.

 

See also: Aperture limits

 

Focus

M.O.D.

 

Minimum distance on which the lens can be focused.

 

Autofocus

 

Automatic focusing. This function can be found in cameras with built-in lens.

 

Resolution

lp/mm

 

Resolution of the lens in line pairs per millimeter (lp / mm).

Lp / mm - is the number of pairs of lines (black + white line) perpendicularly intersecting a segment on the image sensor of length of 1 millimeter.

Note the difference with the unit of camera resolution, LPH. Resolution of cameras is measured in the amount of black and white lines, but the lens resolution is measured in line pairs , that is, at the same actual resolution, the lp / mm value is in 2 times less than LPH.

 

Effect of lens resolution on the final resolution of the camera depends on the ratio of lens resolution in lp / mm to the number of pixels on the image sensor per 1mm (pixel density on the sensor) . Thus, the smaller the size of the image sensor is and the more pixels on it - the higher lens resolution must be in order that the lens does not spoil the resolution of the camera .

 

In the 3D Video window image resolution will be limited by values in these boxed. If N/A is chosen, then the lens resolution limitation is disabled.

You can also simulate the camera resolution. When the lens resolution simulation and camera resolution simulation are both enabled, then their effects are summarized.

 

You can check resolution visually using the Test chart.

 

Contrast %

 

In the field you should enter contrast drop in % according to MTF (Modulation Transfer Function) at the specified value of lp/mm.

 

 

Distortion

ON

 

Turn ON/OFF simulating lens distortion.

 

See also: Real angles

 

Real angles

 

Lens distortion is defined by the values ​​of the calculated and real view angles ( horizontal, vertical , diagonal ) . The calculated angles are obtained by calculating from the focal length and the image sensor size (format). The real angles are usually given in the specifications of cameras and lenses. If the real angle is unknown, you can get them by practical measuring.

To specify distortion it is enough to set one of three real angles: horizontal, vertical or diagonal. Preferable to set the horizontal angle. VideoCAD will calculate missing angles. For maximum accuracy, you can specify 2 or all 3 of the real angles .

 

If the column Set Calc is present, then this angle is not set, it will be calculated by the program, if there is Set, the corresponding real angle must be specified.

 

Attention! Changing the lens focal length or the format / size of sensor at fixed real angles causes view area corruption and requires changing the real angles.

 

See more: Lens distortion

 

Additional features

Synchro

 

Synchronization type: internal, linelock, genlock. Linelock and genlock are used in analog systems for preventing vertical jitter at multiplexing and for increasing speed of video capturing from several cameras.

 

BLC

 

Back light compensation control. The parameter determines accessibility of BLC control in the Sensitivity and Resolution box for a camera of this model.

 

See also: BLC

 

IR LED

 

Presence of build-in infra-red LED illuminators.

 

Microphone

 

Presence of a build-in microphone.

 

VMD

 

Presence of a build-in Video Motion Detector.

 

Flip

 

Automatic flip of an image is performed in such a manner that the top of the image always corresponds to the top of view area. Function could be found in AutoDome cameras.

 

Other 1..3

 

Any additional options.

 

Power supply

Voltage

 

Supply voltage of camera.

 

Consumption

Power (watt)

 

Power consumption of camera.

 

Current (A)

 

The consumption current of the camera. The current is calculated by VideoCAD from power consumption and voltage.

 

On the Used models tab the total current and power consumption of all cameras of this model is displayed additionally.

 

Current type

 

Direct current, Alternating current or Power over Ethernet (PoE).

 

Case

Protection

 

Case protection.

 

If protected housing (waterproof, outdoor or vandalproof) is selected and the Display camera type box is marked (on the Camera and illuminator tab in the Options box), then the icon of the camera of this model in the Graphics window will correspond to the camera in housing .

 

Environment

Temperature (C)

 

Environment temperature range.

 

Max. humidity (%)

 

Maximum humidity.

 

Form

 

Form of the case.

 

Size

 

Model sizes.

 

Weight

 

Model weight.

 

Color

 

Model color.

 

Compatible equipment 1..3

 

CCTV equipment, which is compatible with the model.

 

Compatible software 1..3

 

Software, which is compatible with the model.

 

Provider

 

Provider of the camera model.

 

Cost

 

Model cost.

 

Add. cost 1..3

 

Additional costs connected to using the model.

 

Total cost

 

The model price including additional costs. Value is calculated by VideoCAD by summing the Cost and additional costs.

 

On the Used models tab the total cost of all cameras of this model is displayed.

 

Add. information

 

Any additional information about this camera model.

 

Internet link

 

Internet link to an information about this camera model.