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Settings
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EAGLE allows various regulations of the digital image data like changing the image size, the image section, the contrast, the brightness, the color saturation and many more. So that critical video sources can be grabbed, the EAGLE has a special mode which compensates for critical synchronization behavior and allows images to be grabbed in a higher quality.
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Image Displaying
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Displaying the digitized video data is always done on the VGA screen of a PC. The images are transmitted via the PCI bus in video real time, without almost any CPU-load. They are then presented as a live image on the VGA monitor. EAGLE supports all DirectDraw modes: primary surface, overlay surface and backbuffer mode as well as a standard bitmap mode.
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Direct Draw
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DirectDraw is a Microsoft specified interface for the presentation of video data with Windows. Until recently frame grabber cards without individual image memory had two presentation possibilities:
1. Direct transmission into the VGA card
Advantage:
Real live image with almost no CPU-load.
Disadvantage: Image data overwrote all informations on the screen.
The video image would always being in the foreground.
2. Indirect image presentation via the PC system
Advantage:
Overlay to the video image is possible.
Disadvantage:
Usually no real live image and CPU is working up to 100% towards image display.
DirectDraw combines the advantages of both varieties. Real live image with the possibility of overlaying the video image with dialogues, text and graphics.
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Supported Color Formats with Image Displaying
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The EAGLE supports a number of color modes for storage and displaying images. Depending on the modes various amounts of data have to be transmitted via the PCI bus. This results in the PCI-bus-load being dependent on the selected color modes. Color formats with EAGLE can be chosen from: RGB 32, RGB24, RGB 16, RGB15, Y8 (grey scale), YUV 4:2:2
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Software Development Kit
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A comprehensive SDK makes EAGLE be of unspoken power. Only with this SDK makes the utilisation of all performance features possible. A great number of flexible SDK-functions except for image displaying and storage is offered to the user. Image sequences are provided with a ring buffer or a list with interlocked image files. All display modes of Windows are supported today. For the demonstration of effectiveness of the driver a demo program comes with the product.
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Demo programs
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The Microsoft Visiual C/C++ written source code of this applications shows the programming of the card and helps solving the tasks. EAGLE further support Visual Basic, Borland C++ and Delphi.
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Further drivers
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TWAIN, video for Windows, HALCON, MIL support
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Areas of Typical Use
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- Automatization, Measurement, Industrial Image Processing
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in Machine- and Plant Engineering, Security Market
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Part codes
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- IS-EAGLE
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Scope of Delivery
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- PC plug in board
- Windows95, 98, NT 4,0, 2000 & XP driver
- Documentation
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Block diagram
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Software
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Inclusive source code free of charge
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Functions of the SDK
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- initialization 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 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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