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Frame Grabbing
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The EAGLEquattro supports all color and monochrome cameras with a standard video composite or SVHS video output. These are digitised with high precision and transferred to the PC. The maximum frame resolution is 768 x 576 pixel per channel. The size of the frame can be set independently for each channel using an interpolating scaler for X and Y directions. It is also possible to reduce live frames down to 16 x 16 pixel.
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Grabbing modes
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1. Using one camera:
One camera to be displayed live with 25 fps (fps = frames per second) on the VGA screen. An overlay for text and graphics is required. Parallel to this, the digitised video data is also required for image processing at 25 fps in the PC memory. Both color depth and image size, as well as all variable image parameters, can be set independently from each other.
2. Use of 2 cameras:
Both cameras are written with 25 fps in the VGA board and the PC system memory. This case is classical for a wide range of machines where 2 or more cameras are being positioned.
3. Parallel grabbing of several cameras:
Several cameras to be written simultaneously into the memory for image processing or for image display in the VGA board. All images can be in full resolution as long as the selected color mode does not exceed color depth of 16 bits. Settings for each channel can be selected as required.
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Switching speeds
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Above four cameras each, there are no switching times for an input multiplexer to be taken into account. 4 cameras are always digitised parallel. This means that up to four camera images are available simultaneously on the PC within 40 ms with 50 Hz , or 33ms with 60Hz cameras.
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Multiboard operation
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The Eagle driver is capable of interrupt sharing and supports the simultaneous parallel operation of several cards in one computer. The number of Frame Grabbers in a PC is multiplied by 4 with each additional EAGLEquattro. 8 images can be digitised simultaneously with two cards. You have to take into account, however, that the images no longer have full resolution because the band width of the PCI BUS represents the bottleneck.
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Overlay
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The EAGLEquattro software development kit provides various functions for overlaying the video images with text and graphics. The support of DirectDraw (DD) and the DD backbuffer and DD overlay surface enables the required mode to be used according to the installed VGA board. The latter is not compatible with all VGA boards. The CPU öoad is less than 5%.
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Settings
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All parameters such as image size, image section, contrast, brightness, color value and color saturation can be set individually for each channel.
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Image Display
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Image Display is always on the PC's VGA screen. The images are transmitted in video real-time via the PCI-bus with virtually no CPU-load and presented as live image on the monitor.
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The Software Development Kit (SDK)
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An outstanding feature of the EAGLEquattro is its all-round high performance SDK. The SDK makes it possible for you to use all hardware performance characteristics. A demonstration program as small application is included with the kit to demonstarte the performance capabilities of the SDK. The source code of this application written in Microsoft Visual C/C++ demonstrates the programming of the board and helps with the integration of EAGLEquattro in own programs.
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Order Information
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- IS-EAGLEquattro
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PC plug-in board with 4 Frame Grabbers
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Scope of Delivery
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- PC-Plug-In board
- Driver for Windows95, 98, NT 4.0, ME, 2000& XP
- Documentation
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Block Diagram
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Software
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with source code free of charge included in the scope of supply
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SDK Functions
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- Initializing and Termination
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Setup and termination of connection to hardware
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- Image Digitization and Memory Management
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Allocation of memory, handling of several image memories,...
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- Double and Multi Buffering
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Setup of a memory sequence, ring buffering
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- Selection of Operation Modes and
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Readback of Adjustments
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Setup, reset and adjustment of all parameters
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- Reading and Writing the EEPROM
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- Storage and Loading of Images
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- Image Displaying
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- Additional DirectDraw Functions
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Overlay on/off, displaying the overlay, DD backbuffer mode, DD primary surface mode, DD overlay surface mode
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- Event Handling (Interrupt Controlled Image Digitizing)
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