ACTi camera technology blueprint
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ACTi camera technology blueprint. Confidential. Agenda. Camera block diagram Video processing conditions Sensor overview Sensor + Camera ISP overview Codec overview ACTi 1.3MP Product matrix ACTi multi-megapixel Product matrix. IP surveillance System overview. IP Cam. NVR. Capture.

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Acti camera technology blueprint


  • Camera block diagram

  • Video processing conditions

  • Sensor overview

  • Sensor + Camera ISP overview

  • Codec overview

  • ACTi 1.3MP Product matrix

  • ACTi multi-megapixel Product matrix

Ip surveillance system overview
IP surveillance System overview

IP Cam










Camera block diagram
Camera block diagram







Sensor: An image is formed on the sensor, and digital video data is sent to the Camera ISP

Camera ISP:Video processing functions such as BLC, AGC etc.

Video enhancer: Further additional video processing such as WDR, DNR, skin tone enhancement, 3D de-interlacing

Codec: Compress the video data into smaller file format and send to the network

Acti camera technology blueprint

Sensor overview

  • ACTi multi megapixel trend 2 ~ 10MP

  • High megapixel camera applications

Acti camera technology blueprint

Multi megapixel

2 Megapixel

1920 x 1080

3 Megapixel

2048 x 1536

10 Megapixel

3856 x 2764

Acti camera technology blueprint

Camera ISP overview

  • 2.0 MP with full camera technologies

  • Support Special functions of high megapixel cameras

  • - ePTZ

  • - video cropping

Acti camera technology blueprint

Video enhancement overview

Existing technologies

IR illumination

2009 New technologies

Mechanical IR cut filter

3D De-interlacing

Digital Noise Reduction

Sense up

Digital Slow Shutter

Wide Dynamic Range

IRIS Control for CMOS

Acti camera technology blueprint

See clearer in the dark

Acti camera technology blueprint

See clearer in strong background lighting

Acti camera technology blueprint

Reduced noise speckles in low light conditions

Acti camera technology blueprint

7 Lux

Color Mode

See clearer in dim background lighting

1 Lux

B/W Mode

Acti camera technology blueprint

Night: Without low light enhancement

Night: With low light enhancement

Night: With low light enhancement & IR LED

  • ACTi real camera demo

Day: Without low light enhancement

Day: With low light enhancement

Acti camera technology blueprint

Video is digitally wrapped (flattened) on edges due to curvature effect from lens


FOV: 170Deg

Acti camera technology blueprint

Megapixel zoom

VGA zoom

Acti camera technology blueprint

Video cropping is used for indoor application – shopping store => 1 camera replacing 4 cameras

For scenery that is close, it is effective. For scenery that is far, the object appears to be smaller and hence not so effective under cropping

Acti camera technology blueprint

  • Beneficial with Wide FOV/High megapixel cameras:

  • Do digital pan, tilt, zoom without moving mechanical parts

  • 2. Wide FOV + ePTZ => A large field of view is constantly present, but for example when MD in one regions happens the view can auto ePTZ to the MD region, while the other camera view is still being monitored and recorded

Acti camera technology blueprint


  • Why is optical zoom only available up to 3MP?

  • Ans:

  • 3 A’s are the key to good video: Auto white balance, Auto focus & Auto exposure. All three A’s require frame to frame comparison for video algorithm to take place. Having 30fps for video image processing is a key factor.

  • When >3MP, the frame rate is reduced and therefore the amount of data required for video processing will not be enough, or time taken will be too long to achieve a good picture that meets the 3 A’s.

  • For higher megapixel cameras beyond 3MP, the pixel count is high enough so digital zoom is considered instead.

  • ACTi is not chasing a multi megapixel resolution only, rather ACTi is focusing to adopt full camera technologies in addition to just higher resolution.

Acti camera technology blueprint


  • Why is Day & Night only available up to 3MP?

  • Ans: Under such a large picture, the ability to do D&N correctly is a challenge. Focus shift, noise levels at night mode vary within the larger picture.

  • Another reason is because peripheral components such as lens, IR cut filter etc will need to be able to support >3MP resolutions as well, and there is a technical barrier. Of course if these barriers at the peripheral components can be resolved, then ACTi will adopt D&N into >3MP cameras.

  • Why is WDR/DNR only available up to 2MP?

  • Ans: The main reason is because the video data beyond 2MP is too much for the ISP processing engine to handle calculations intended for WDR & DNR. Another reason is the reduced frame rates at >2MP means that the frame to frame comparison is not highly efficient.

  • Why is ePTZ only available at 5/10MP?

  • Ans: This is because the FOV is wide enough to allow significant space/movement for ePTZ.

  • Why is video cropping with 4 streams only available at 5/10MP?

  • Ans: This is because the overall picture size is large enough to allow significant use of video cropping at 4 different regions within this picture. If the picture size is small, then transmitting the entire picture rather than 4 separate pictures makes more sense.

Acti camera technology blueprint

Codec overview

H.264 compression schemes

Acti camera technology blueprint

Codec structure: SoC vs. DSP

  • SoC (System on Chip) has dedicated performance for IP camera applications

  • - ACTi adoption

  • - To achieve multi megapixel, the algorithms are highly complicated so a dedicated processor with full computing power is necessary

  • DSP (Digital signal processor) are based for multi purpose applications, not necessarily for IP surveillance

  • - H.264 baseline profile at most

  • Key performance differentiators:

  • Maintaining good video quality under compression

  • Able to achieve high frame rates at high megapixel resolution

  • Network streaming with low latency and jitter

  • Overall firmware stability in varied working environments

Acti camera technology blueprint

Codec & Camera ISP integration?







  • The camera ISP is in charge of video processing, while Codec for video compression

  • - They are doing completely different functions, putting them into one chip may limit overall performance and stability

  • Each technology to be developed separately

  • - Separate development will allow greater technology improvement in their specific fields

  • - ACTi is following a separate development trend until both technologies are mature

Acti camera technology blueprint


  • Why type of H.264 compression is ACTi using and why?

  • Ans: ACTi is adopting baseline for initial product phase with VGA ~ 2.0MP, and will move to high profile (skip main profile) for second phase from 2.0MP ~ 10.0MP. High profile includes more intelligent encoding with added features, so it means that less information decoding (as compared to baseline) is required by the NVR system, hence less CPU resources are required by the NVR server.

  • Can ACTi achieve multiple streaming?

  • Ans: Yes, dual streaming can be achieved at all video resolutions. For example, it can be two H.264 streams, or one H.264 stream + one MJPEG stream.

  • At 5/10MP cameras, up to 4 independent video streams can be outputted from 4 different regions within the picture.

Acti camera technology blueprint

End to end integration

  • Long term commitment to focused technologies related to IP surveillance

  • Streamline advanced camera technologies to our high stability NVR

  • => Total end to end solution leading to mutual business profit !