NIPXI-1411

596-597 Single Channel Color 11/11/02 4:31 PM Page 596 Single-Channel Color or Monochrome Image Acquisition Single-Channel Color or Monochrome Image Acquisition NI 1411 • Color or monochrome acquisition • 1 NTSC, PAL, S-Video, RS-170, or CCIR input • Onboard real-time HSL color conversion for fast color matching • Partial image acquisition with onboard programmable region of interest • Onboard pixel decimation • Programmable gain and offset • 3 by 8-bit RGB look-up table • 1 external trigger/digital I/O line • Transfer rates up to 132 Mbytes/s Operating Systems • Windows 2000/NT/XP/Me/9x Recommended Software • LabVIEW • Measurement Studio • Vision Development Module - IMAQ Vision - NI Vision Builder Other Compatible Software • C/C++ Driver Software (included) • NI-IMAQ Models • NI PCI-1411 • NI PXI-1411 Overview and Applications For high-quality analog color image acquisition at an affordable price, National Instruments offers the NI 1411 Series, which consists of PCI and PXI plug-in image acquisition devices that accept analog video input from standard color or monochrome cameras. These devices come with easy-to-use image acquisition driver software. Unlike multimedia “frame grabbers”, the NI 1411 Series features increased image processing throughput, such as on-the-fly color conversion to HSL and partial image acquisition with programmable region of interest. In addition, NI-IMAQ controls the NI 1411 digital I/O line. INFO CODES For more information, or to order products online visit ni.com/info and enter: pci1411 Performance Gains with Partial Image Acquisition Real-Time Color Conversion Real-time color conversion is especially useful for high-speed color matching in industrial or scientific applications, even in varying illumination. An example of HSL in action is using color to inspect the presence of an object even though there are shadows and/or reflections. Lighting variations do not affect the image (hue). Use the powerful color matching functions in IMAQ Vision to locate objects quickly and accurately with the onboard HSL conversion. The NI 1411 Series includes features pxi1411 that improve overall image acquisition and image processing speed. You can BUY ONLINE! choose to acquire only a portion of the image using the onboard programmable ROI feature. You can configure the size of the acquired image using Measurement & Automation Explorer, or use the ROI tools in the NI-IMAQ driver software to transfer only a subset of the image to PC memory for processing. Partial image scanning results in fewer pixels to process. For example, using partial image scanning, you can reduce a 640 by 480 image to a 400 by 400 image and increase your processing speed by operating on 48 percent fewer pixels. Vision Easy-to-Use Driver Software National Instruments NI-IMAQ driver level software offers the most comprehensive software interface for image acquisition. NI 1411 Series devices are shipped with the NI-IMAQ image acquisition driver software and National Instruments Measurement & Automation Explorer for easy configuration of NTSC and PAL color cameras. Using NI-IMAQ, you can quickly and easily start your application without having to program at the register level. You can program your image acquisition application in LabVIEW, LabWindows/CVI, and Measurement Studio. Color Image Acquisition Performance Gains with Onboard Decimation Onboard decimation also provides image acquisition and processing performance gains by allowing onboard scaling or decimating of the image without using the PC processor. Onboard decimation scales the image by removing every second, fourth, or eighth pixel (powers of two only). By reducing the number of pixels (decimation) on the IMAQ board, the system has fewer pixels to process with the PC processor. If you remove every other pixel using onboard decimation, the image size decreases by 50 percent, which speeds up your processing. 596 National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com 596-597 Single Channel Color 11/11/02 4:31 PM Page 597 Single-Channel Color or Monochrome Image Acquisition Single-Channel Color or Monochrome Image Acquisition Hardware PCI Interface The PCI bus is the electrical interface for both the NI PCI-1411 and NI PXI-1411. The National Instruments custom MITE ASIC for interfacing to the PCI bus offers the highest image acquisition performance available. The MITE ASIC can transfer data at a maximum sustained rate of 100 Mbytes/s in master mode to maximize the use of the available PCI bandwidth. saturation, and luminance (HSL) image planes. Because the hue plane is effective for analyzing images in which shadows and lighting gradients are present, the NI 1411 Series makes inspection systems more reliable. With these devices, industrial inspection and scientific imaging developers can increase the reliability and performance of numerous applications, including inspecting light emitting diodes (LEDs), fabric and textiles, color paint and powder, pharmaceutical blister packs, and difficult to light applications. Onboard Memory The NI 1411 Series has 16 MB of onboard memory, useful for temporary storage of images being transferred to the PCI bus. Color Pattern Matching Use color pattern matching to locate quickly known reference patterns, or fiducials, in a color image. With color pattern matching, you create a model or template of an object. The search tool first scans the image to match the color distribution, then scores the match for shape. The score relates to how closely the model matches the pattern found. You should use color pattern matching to locate reference patterns that the color and spatial information in the pattern fully describe. Color can often simplify a monochrome problem by improving contrast or separation. Trigger and Strobe You can use the digital I/O line as an input to trigger image acquisition or as an output to control solenoids, solid-state relays, or strobes. Programmable Gain and Offset The NI 1411 Series has programmable gain and offset circuitry for optimizing the input signal range. Ordering Information I/O Connector and Cabling Two external BNC connectors are used for the video source and digital I/O line. Each product shipment includes a 2 m BNC cable. NI PCI-1411 ......................................................777857-01 NI PXI-1411 ......................................................778006-01 Includes the NI 1411 hardware, NI-IMAQ for Windows 2000/NT/XP/Me/9x, and a 2 m IMAQ-BNC-1 cable. Applications Vision Vision The NI 1411 devices offer machine vision developers real-time color conversion of NTSC, PAL, and S-Video formats to the hue, Specifications Typical for 25 ˚C unless otherwise noted. Gain and Offset Brightness, contrast, saturation, and hue controls External Synchronization and Trigger Signals 30 25 30 25 frames/s frames/s frames/s frames/s Trigger sense ............................................. Trigger polarity .......................................... Pulse width ................................................ VIH (TTL) .................................................... VIL (TTL)..................................................... TTL Programmable (positive or negative) 20 ns minimum detectable 2V 0.8 V Supported Formats NTSC composite or S-video....................... PAL composite or S-video.......................... S-Video NTSC............................................. S-Video PAL ............................................... Video Inputs Video 0 ....................................................... Video 1 ....................................................... Input impedance ........................................ Input range (black to white) ....................... Single-ended BNC for CVBS Single-ended S-Video (Y/C) All 75 Ω ±1% 700 mV (calibrated) or 400 mV to 1.00 V (variable gain) Pixel Clock (square pixel sampling rate) Internally generated for square pixels mode NTSC ..................................................... 12.27 MHz PAL ........................................................ 14.75 MHz Bus interface.............................................. Master, slave Bus-master performance ........................... 100 Mbytes/s (sustained) Accuracy Luma gain .................................................. ±2.5% of reading Chroma gain............................................... ±2.5% of reading Power Requirements +5 VDC (±5%) ........................................... 1.25 A ±12 VDC (±5%) .........................................