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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Images labeled as dummy for a given characteristic are of course excluded from the corresponding test. 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. Images have been reduced in size and compressed. 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.
Maio”A multi-classifier approach to face image segmentation for travel documents”Expert Systems With Applicationsvol. Views Read Edit View history. The present description is a simplified version of the standard and the recommendations and has not the pretension to be exhaustive. The geometric requirements are specified as a function of some measures represented in the following figure; Photographic and pose-specific tests: The use of face as a biometric identifier has some drawbacks: Children States may issue special recommendations for children.
The tests can be organized into three categories: The dummy value is used for the cases of uncertainty e. Two variants of the Frontal Face Image Type are defined: 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: The ISO standard donesn’t allow digital alteration of the image to correct the dynamic range or the colours. Sich circumstances may be religious, medical or cultural.
Position of the subject and background The subject shall not 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.
Nowadays the digital images are replacing the traditional photos on photographic paper in all kind of applications: It requires less detail, which makes it suitable for less demanding applications.
Pose The applicant shall be shown facing square to the camera, not loking over one shoulder portrait style. This page was last edited on 18 Februaryat 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 ieo process.
ISO standards by standard number. Those recommendations are used in several countries also for the issuance of driver licenses or residence permits. 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:.
Retrieved from ” https: Bibliography Click here if you are interested in any of the publications below. A Face Image Type that specifies frontal images with sufficient resolution for human examination as well as reliable computer face recognition. A smile with closed mouth is permitted. 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: In order to perform balanced tests, the testing set has been further divided into 24 subsets, each related to a specific characteristic.
Biometric System Laboratory
In some cases a non neutral expression and closed eyes may be acceptable. If possible, avoid heavy frames. This image type is suitable for permanent storage of the face information, ios it is applicable to ID portraits for passportdriver’s licenseand mug shot images. From Wikipedia, the free encyclopedia.
Some information about the composition of both training and test set are given in the following table where for each characteristic the number of compliant Coso NC and dummy D images are reported. Quality of the photograph The portrait shall be in sharp focus from nose to ears, of high quality with no creases or ink marks. Face is chosen as the primary globally interoperable biometric characteristic for machine assisted identity confirmation in Machine Readable Travel Documents MRTD.
The head should be upright so thaht an imaginary horizotal line drawn between the centres of the eyes is parallel to the top edge of the picture. A precise formalization is here proposed to limit as much as possible 19794- ambiguity. No mandatory scene, photographic and digital requirements are specified for this image type.
Reflexion on the face. The photograph showed below have been published by ICAO. If in color, it should show skin tones naturally.
In any case the child shall be alone with no other people, chair backs or toys visible. This type of Face Image Type includes the full head with all hair in most cases, as well as neck and shoulders.