Iec 15415

[Liora Putcha]

For2-D barcodes, barcode verifiers analyze the structure of the symbol and the reflectance of each of the modules. 2-D label-based codes are graded according to eight different parameters under the ISO 15415 standard. Like with 1-D barcodes, some parameters are image-related, and others are data-related. Because 2-D barcodes contain so much more data than 1-D barcodes, there are more parameters related to data quality than image quality.

ISO/IEC 15415:2011 applies to those two-dimensional symbologies for which a reference decode algorithm has been defined, but its methodologies can be applied partially or wholly to other similar symbologies.

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Aperture refers to the circular sample that is captured at grid intersections. Each of those sample circles are what the software will use to determine whether a cell is dark or light. Too big or too little aperture will cause your grade to be less accurate.

In ISO/IEC 15415: the global threshold is a simple calculation of the median between the highest and lowest reflectivity values. The highest brightness (Rmax or RL) and the lowest brightness (Rmin or RD) are identified and then the global threshold is just the midpoint between these two extreme values.

In ISO/IEC TR 29158 (AIM DPM): there are often some spots of glare which causes Rmax to be very different from most of the other spaces in the code. This is a problem because it makes the global threshold higher, and then some of the other spaces are close to that threshold which makes them get a low modulation value.

The image sensor works the same for ISO/IEC 15415 as with ISO/IEC TR 29158. However, in 29158, the exposure is adjusted automatically to brighten the image so that a darker code will look brighter and the full range of grayscale is used in the sensor. For both 15415 and 29158 the illumination intensity is very high so that ambient light has no practical contribution to the image. However, the exposure value is changed in 29158 compared to 15415.

The process is done to find an exposure time that is needed to give a full brightness image on the calibration card. A calibration card has barcode symbols that are measured against a National Institute of Standards and Technology (NIST) traceable judge card to determine the exact Symbol Contrast Rmin/Rmax values. These values are entered into the verification software at the beginning of the process so that the software can adjust the camera accordingly.

Currently, there are no DPM-specific calibration cards to challenge ISO/IEC 29158. A Data Matrix conformance test card can be used, but the contrast values will never perfectly match the value on the card because of the image adjustment used in 29158. Testing with the 29158 grading standard can be done to check for correct operation but will yield results that are different than those shown on the conformance card. It is recommended that the verifier also be tested using ISO/IEC 15415.

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Pack-and-ship stores that have been approved to offer FedEx services are identified by our official sign posted in their front window. China Parcel Inc located at 15415 Jeffrey Rd Ste 110 has regular scheduled pickup times for FedEx Express and FedEx Ground shipments, and can prepare your shipments for you.

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15415 Rika, provisional designation 1998 CA1, is a bright background asteroid from the Florian region of the inner asteroid belt, approximately 3 kilometers (2 miles) in diameter. It was discovered on 4 February 1998, by Japanese astronomer Akimasa Nakamura at the Kuma Kogen Astronomical Observatory in southern Japan.[1] The presumed S-type asteroid has a rotation period of 6.36 hours and possibly an elongated shape.[4] It was named after Rika Akana, a character in the Japanese film and later television adapted drama Tokyo Love Story.[1]

Rika is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[3] Based on osculating Keplerian orbital elements, the asteroid has also been classified as a member of the Flora family (402), a giant asteroid family and the largest family of stony asteroids in the main-belt.[4]

The body's observation arc begins with a precovery published by the Digitized Sky Survey and taken at the Palomar Observatory in November 1954, more than 43 years prior to its official discovery observation at Kuma Kogen.[1]

In October 2006, a rotational lightcurve of Rika was obtained from photometric observations by astronomers at the Skalnat pleso Observatory in Slovakia. Lightcurve analysis gave a well-defined rotation period of 6.3636 hours with a high brightness amplitude of 1.06 magnitude, indicating that the body has an elongated shape (U=3).[6][a]

This minor planet was named after Rika Akana, the heroine played by Honami Suzuki in the manga-based Japanese television drama Tokyo Love Story. Some episodes of the dorama were filmed on locations near the town of Kumakōgen, where the discovering observatory of this asteroid is located.[1]

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