Tough TIFF

X9.100-181, the specification for TIFF Image Format for Image Exchange, is published.

As of Sept 2007, a new specification related to electronic image exchange of check image data is an ANSI Standard, X9.100-181.

“Abstract - The scope of this standard is to define specific TIFF fields that can be used and the allowable values for those fields that will support interoperability for check image exchange processing between financial institutions. This standard only addresses the use of G4 bi-level image (black/white) compressions within the TIFF 6.0 structure.”

Refer to the ANSI web store site (ANSI Web Store ) for obtaining a copy of this standard.

Background

Image exchange standards have adopted the TIFF 6.0 specification as the image format scheme. Although TIFF 6.0 is a mature specification it was designed with a lot of flexibility to support a wide range of applications. In addition, many of the TIFF fields are open for different interpretations. This flexibility is producing many different variations of TIFF image formats that many times are incompatible with the TIFF image viewers and image applications that need to process them for check image exchange.

As many new scanning devices and applications are being developed for check imaging, the purpose of this standard is to provide guidance to the financial industry by defining the most commonly supported and least problematic uses of TIFF fields and their values for the exchange of images within the financial industry.

What does this mean for a financial services provider?

It means that there are images being captured and exchanged today that may break (not be able to be viewed, saved, etc.) the various financial institutions’ software payments systems that need to process them. This standard also defines a class of image formats that can now be rejected or returned for reasons of not meeting the required image format standards. These issues can lead to an increase in operational costs for dealing with image format exceptions, and increase a financial institution's risk of losses for both creating and receiving images in wrong formats.

The standard focuses on seven key issues regarding TIFF tags:

  1. Multistrip
  2. Byte-order
  3. Photometric Interpretation
  4. Fill Order
  5. Orientation
  6. Resolutions
  7. Private Tags

The standard specifies a minimum set of required tags with rules for the required value contents. The following table summarizes the required tags.

ImageWidth

Must be a valid value

ImageLength

Must be a valid value

Compression

Only Group4 Fax – T.6

Photometric Interpretation

An image bit of 0 is imaged as white and an image bit 1 is imaged as black

StripOffsets

Multi-strip image formats are not allowed

RowsPerStrip

This must equal the “ImageLength” field

StripByteCounts

Only one image strip allowed

XResolution

Only 200 or 240 pixels per inch allowed

YResolution

Only 200 or 240 pixels per inch allowed

Additionally, the standard allows some optional tags which will be up to the discretion of the receiving financial institution to allow them or not. The next table shows these optional tags with the acceptable value:

NewSubfileType

Multi-page TIFF formats are not allowed

BitsPerSample

Only Black and White Images allowed

Thresholding

Standard does not allow dithering or half toning of images

FillOrder

Only TIFF 6.0 default allowed

Orientation

Normal Portrait Mode (Origin of the image is top left corner)

SamplesPerPixel

Black and White Images only have sample of 1

T6Options

Only standard CCITT G4 compression allowed

ResolutionUnit

Inches

All My Papers has developed the X9 QUALIFIER software application that will test the images contained in X9.37, aka ICL, files for conformance to this new standard. It will also detect non conforming items due to image quality and MICR Mismatch errors. It also detects balancing and file format problems. This can be used in operations to detect X9.37 files for nonconforming images. The complete range of tests that X9 QUALIFIER will perform include:

  • Compliance to X9.100-181
  • Resolution tag values match resolution of the actual image
  • Images can be decompressed
  • Images comply with TIFF 6.0 syntax rules
  • 9.37 file image size data match the actual TIFF image sizes
  • Images are Intel format (Little Endian)
  • X9.37 file has no missing images
  • IQA tests that includes darkness and dimension recommended by ECCHO rules
  • MICR Mismatch errors

For further information about X9 QUALIFIER and to receive a FREE download visit our X9 QUALIFIER product page - http://www.allmypapers.com/x9qualifier.htm.