ISO 19794-5 PDF


addition to the normative requirements presented in ISO/IEC , open issue talking over objective metric for human perceived quality vs. metric for. The Part 5 of the ISO/IEC standard, which is mentioned in the ICAO ( International Civil Aviation Organization) recommendations about the travel. As per ISO/IEC Face Image Data standard, there are mainly two types of face images as follows: Basic face image: It specifies face image record format.

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ISO standards by standard number.

Face is chosen as the primary globally interoperable biometric characteristic for machine assisted identity confirmation in Machine Readable Travel Documents MRTD. No mandatory scene, photographic and digital requirements are specified for this image type. The background has to be uniform.

In order to perform balanced tests, the testing set has been further divided into 24 subsets, each related to a specific characteristic. Bibliography Click here if ieo are interested in any of the publications below. Images 1979-45 been reduced in size and compressed. Colours and lighting The portrait shall be colour neutral showin the applicant with eyes open and clearly visible. The photograph showed below have been published by ICAO.

ICAO completed the ISO standard publishing in Documentpart 1, volume 1, examples of acceptable or not acceptable photographs for travel document based on this standard.

If possible, avoid heavy frames. Quality of the photograph The portrait shall be in sharp focus from nose to ears, of high quality with no creases or ink marks.

The rest of images are used for testing. Children States may issue special recommendations for children. The present description is a simplified version of the standard and the recommendations and has not the pretension to be exhaustive.


The database contains 5, images, gathered from different sources: Requirements Starting from the indications provided into the ISO standarda set of 30 tests has been defined to evaluate the accuracy of automatic systems for compliance verification: Head coverings Head coverings shall not be accepted except in circumstances which the comptetent State authority specifically approves.

The database is supplied with the ground-truth data needed for an objective performance evaluation; in particular the following information is given for each image: Unfortunately, due to the lack of clear specifications and of an appropriate benchmark, comparing the performance of such systems is not easy. Pose The applicant shall be shown facing square to the camera, not loking over one shoulder portrait style.

Photograph for ID and travel documents passport, ID card The photographs for ID and travel documents, showing the portrait of the holder have a long history of use. The frames shall not cover any part of the eyes. Retrieved from ” https: The dummy value is used for the cases of uncertainty e. For this reason a training set of images of which 50 are fully compliant has been extracted from the BioLab-ICAO database to be used for parameters setup and training.

ISO/IEC 19794-5

The tests can be organized into three categories: The ISO standard donesn’t allow digital alteration of the image to correct the dynamic range or the colours. Four face image types are introduced to define categories that satisfy the needs of different applications, and the requirements above are specified for each image type: The standard is intended to allow computer analysis of face images for automated face identification one-to-many searching and authentication one-to-one matchingas well as human identification of distinctive features such as moles and scars that might be used to verify identity, and human verification of computer identification results.


Eye glasses The portrait shall show the eyes with no light reflection off the glasses and io tinted lenses. Those recommendations are used in several countries also for the issuance of driver licenses or residence permits. Evaluation Due 91794-5 privacy restrictions the database cannot be downloaded. The applicant shall be looking at the camera with a neutral expression and the month closed.

Lighting of the applicant and background The lighting shall be uniform with no shadows and no reflections on the face, no red eyes and the background shall not present any remarkable shadow.

The face has to be centered both vertically and horizontally. By using this site, you agree to the Terms of Use and Privacy Policy. Modern biometric passport photos should comply with this standard. In some cases a non neutral expression and closed eyes may be acceptable.

A Face Image Type that specifies frontal images with sufficient resolution for human examination as well as reliable computer face recognition. If in color, it should show skin tones naturally. It requires less detail, which makes it suitable for less demanding applications.

ISO/IEC | Correlance

From Wikipedia, the free encyclopedia. Database An ad hoc database has been created using, where possible, public ios and acquiring additional images to cover the missing defects. Images labeled as dummy for a given characteristic are of course excluded from the corresponding test. A precise formalization is here proposed to limit as much as possible the ambiguity.