Surveillance cameras can be categorized based on various criteria. Here's a classification of surveillance cameras:
1. Based on Imaging Color:
- Color Cameras: These are ideal for detailed object recognition, such as identifying clothing or the colors of objects. They provide increased information due to color and are generally considered to have ten times the information compared to black and white cameras.
- Black and White Cameras (Monochrome): These are suitable for low-light areas and locations where it's not possible to install lighting equipment, especially when monitoring specific locations or movements. They often have higher resolution than color cameras.
2. Based on Camera Resolution:
- Low-Resolution Cameras: These typically have around 250,000 pixels, a color resolution of about 330 TV lines, and a black and white resolution of around 400 TV lines.
- Medium-Resolution Cameras: With pixel counts ranging from 250,000 to 380,000, they offer color resolutions around 420 TV lines and black and white resolutions of about 500 TV lines.
- High-Resolution Cameras: These cameras have over 380,000 pixels, color resolutions equal to or greater than 480 TV lines, and black and white resolutions of 600 TV lines or more.
3. Based on Camera Sensitivity:
- Standard Sensitivity: These cameras typically require 1-3 LUX (illuminance) to operate under normal conditions.
- Moonlight Sensitivity: Operating at around 0.1 LUX, these cameras perform well in low-light conditions.
- Starlight Sensitivity: Cameras with starlight sensitivity require less than 0.01 LUX for normal operation.
- Infrared Illumination Type: These cameras can operate at very low illuminance levels, effectively achieving zero illuminance, using infrared light sources for imaging.
4. Based on CCD Sensor Size:
- 1-inch CCD: These cameras have a sensor size of approximately 12.7mm x 9.6mm (diagonal: 16mm).
- 2/3-inch CCD: Featuring a sensor size of about 8.8mm x 6.6mm (diagonal: 11mm).
- 1/2-inch CCD: Having a sensor size of roughly 6.4mm x 4.8mm (diagonal: 8mm).
- 1/3-inch CCD: These cameras come with a sensor size of around 4.8mm x 3.6mm (diagonal: 6mm).
- 1/4-inch CCD: With a sensor size of about 3.2mm x 2.4mm (diagonal: 4mm).
- 1/5-inch CCD: This category is still in development, and official products have not been released.
Additionally, CCD cameras are categorized under PAL and NTSC standards and can be further classified based on image signal processing methods or camera structures.
1. Based on Imaging Color:
- Color Cameras: These are ideal for detailed object recognition, such as identifying clothing or the colors of objects. They provide increased information due to color and are generally considered to have ten times the information compared to black and white cameras.
- Black and White Cameras (Monochrome): These are suitable for low-light areas and locations where it's not possible to install lighting equipment, especially when monitoring specific locations or movements. They often have higher resolution than color cameras.
2. Based on Camera Resolution:
- Low-Resolution Cameras: These typically have around 250,000 pixels, a color resolution of about 330 TV lines, and a black and white resolution of around 400 TV lines.
- Medium-Resolution Cameras: With pixel counts ranging from 250,000 to 380,000, they offer color resolutions around 420 TV lines and black and white resolutions of about 500 TV lines.
- High-Resolution Cameras: These cameras have over 380,000 pixels, color resolutions equal to or greater than 480 TV lines, and black and white resolutions of 600 TV lines or more.
3. Based on Camera Sensitivity:
- Standard Sensitivity: These cameras typically require 1-3 LUX (illuminance) to operate under normal conditions.
- Moonlight Sensitivity: Operating at around 0.1 LUX, these cameras perform well in low-light conditions.
- Starlight Sensitivity: Cameras with starlight sensitivity require less than 0.01 LUX for normal operation.
- Infrared Illumination Type: These cameras can operate at very low illuminance levels, effectively achieving zero illuminance, using infrared light sources for imaging.
4. Based on CCD Sensor Size:
- 1-inch CCD: These cameras have a sensor size of approximately 12.7mm x 9.6mm (diagonal: 16mm).
- 2/3-inch CCD: Featuring a sensor size of about 8.8mm x 6.6mm (diagonal: 11mm).
- 1/2-inch CCD: Having a sensor size of roughly 6.4mm x 4.8mm (diagonal: 8mm).
- 1/3-inch CCD: These cameras come with a sensor size of around 4.8mm x 3.6mm (diagonal: 6mm).
- 1/4-inch CCD: With a sensor size of about 3.2mm x 2.4mm (diagonal: 4mm).
- 1/5-inch CCD: This category is still in development, and official products have not been released.
Additionally, CCD cameras are categorized under PAL and NTSC standards and can be further classified based on image signal processing methods or camera structures.
