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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Nowadays the digital images are replacing the traditional photos on photographic paper in all kind of applications: Database An ad hoc database has been created using, where possible, public databases and acquiring additional images to cover the missing defects.
Reflexion on the face. In order to perform balanced tests, the testing set has been further divided into 24 subsets, each related to a specific characteristic. Position of the subject and background The subject shall sio be to close nor to far from the camera: Unfortunately, due to the lack of clear specifications and of an appropriate benchmark, comparing the performance of such systems is not easy.
From Wikipedia, the free encyclopedia. For this reason machine-assisted face recognition from identity documents requires quite restrictive quality standards to be fulfilled.
The tests can be organized into three categories: In order to enable applications that run on a variety of devices, including those with limited resources such as embedded lsoand to improve face recognition accuracy, the specification describes not only the data format, but also additional requirements, namely: If possible, avoid heavy frames. 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 applicant shall be looking at the camera with a neutral expression and the month closed. In some cases a non neutral expression and closed eyes may be acceptable. Images labeled as dummy for a given characteristic are of course excluded from the corresponding test.
ISO/IEC – Wikipedia
If in color, it should show skin tones naturally. The use of face as a biometric identifier has some drawbacks: 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: The database consists of fully compliant images i.
Colours and lighting The portrait shall be colour neutral showin the applicant with eyes open and clearly visible. A Face Image Type that specifies frontal images with sufficient resolution for human examination as well as reliable computer face recognition. Retrieved from ” https: For teststhe number of images n i included in the subset related to the characteristic i is: 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.
Face is chosen as the primary globally interoperable biometric characteristic for isl assisted identity confirmation in Machine Readable Travel Documents MRTD.
The database contains 5, images, gathered from different sources: The standard is intended to allow computer analysis of face images 17994-5 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.
All the remaining Face Image Types inherit the properties of this type.
The rest of images are used for testing. This page was last edited on 18 Februaryat The present description is a simplified version of the standard and the recommendations and has not the pretension to be exhaustive.
To enable many applications on variety of devices, including devices that have the limited resources required for data storage, and to improve face recognition accuracy, this International Standard specifies not only a data format, but also:.
Skip to main content. The geometric requirements are specified as a function of some measures represented in the following figure; Photographic and pose-specific tests: 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: Dynamic range of levels in the face area is recommended. This type of Face Image Type includes the full head with all hair in most cases, as well as neck and shoulders.
Maio”A multi-classifier approach to face image segmentation for travel documents”Expert Systems With Applicationsvol.
The background has to be uniform. Views Read Edit View history. The photograph showed below have been published by ICAO. No mandatory scene, photographic and digital requirements are specified for this image type.
Biometric System Laboratory
Testing Protocol The algorithms for compliance verification are usually characterized by a set of parameters that need to be tuned according to the kind of images the algorithm has to process. Head coverings Ido coverings shall not be accepted except in circumstances which the comptetent State authority specifically approves. Photograph for ID and travel documents passport, ID card The photographs for ID and travel documents, showing the portrait 91794-5 the holder have a long history of use.
Eye glasses The portrait shall show the eyes with no light reflection off the glasses and no tinted lenses. This image type is suitable for permanent storage of the face information, and it is applicable to ID portraits for passportdriver’s licenseand mug shot images.
A precise formalization is here proposed to limit as much as possible the ambiguity. Sich circumstances iiso be religious, medical or cultural. 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: