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Light Rail & Bus Security
Pixim-Powered Cameras Overcome Security Challenges of Traditional Cameras
London. Honolulu. Singapore. Boston. Istanbul. Vancouver. These are just a few of the cities worldwide that have installed security cameras on at least some of their buses or light-rail trains. In some cases, it is passengers concerned for their safety who lobby for the installation of cameras, believing that the cameras will deter criminals. Other times, city governments advocate security cameras as a way to reduce crime against people and property, to lower the costs associated with vandalism, and to encourage ridership by providing a safe environment for passengers and drivers.
If these vehicles use traditional CCD-based security cameras, however, they risk being less than effective as both deterrents and prosecuting tools – because if potential criminals find out how poorly these cameras perform in sub-optimal lighting conditions, they will realize they might get away with their actions without repercussions.
Common surveillance camera problems for transit authorities include:
- Lack of detail in backlight, high-contrast light, or outdoors, including at bus or train doorways and windows
- Low clarity in shadows, such as inside the bus or train
- Image wash-out in glare or with reflections from glass and metal
- Color inaccuracies in varying lighting conditions, such as while the bus or train is moving or at transit stations
- Low-quality DVR recordings
Pixim’s Digital Pixel System® ultra-wide dynamic range technology, a true breakthrough in imaging technology, delivers unprecedented image quality in all lighting conditions. Cameras powered by Pixim’s specialized image processing chipsets can significantly enhance security on buses and light-rail trains through the following capabilities:
- Widest dynamic range: Captures highlight and shadow detail in the same scene.
- Highest total resolution: Makes it easy to distinguish image features and details, even in highly variable lighting conditions.
- Superior color rendering: Accurately displays color even in difficult lighting such as backlight, mixed indoor/outdoor scenes, glare, reflection, and fluorescent lighting.
- No "camera blindness": Eliminates the vertical smear, pixel blooming, and other image artifacts commonly encountered in high-contrast scenes.
- High image compression: Improves image quality with smaller file size - allowing DVRs to record with higher frame rate or higher resolution, or both, while maintaining the same total recording time.
| More About Pixim and DVRs | [Hide] |
Pixim, compared with CCD technology, enables the higher compression of images taken by security cameras, which leads to advantages for DVRs:
- Allows the use of higher-resolution settings on the DVR without sacrificing the overall recording time (i.e., # days on a DVR).
- Enables more frames per second to be written on the DVR without sacrificing overall recording time (i.e., # days on a DVR) or resolution.
- Permits the connection of more cameras to each DVR, without sacrificing resolution or frame rate.
- Provides recordings with higher image quality, for more accurate identification of people and events and more compelling evidence.
- Makes it easier to comply with FBI and other regulations that require storage of 10 to 30 days' worth of video - without sacrificing resolution, lowering the frame rate, or reducing the number of cameras connected to each DVR.
- Optimizes the investment in expensive DVRs.
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