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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In order to enable applications that run on a variety of devices, including those with limited resources such as embedded systemsand to improve face recognition accuracy, the specification describes not only the data format, but also additional requirements, namely: 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.
The photograph showed below have been published by ICAO. Retrieved from isoo https: Children States may issue special recommendations for children. ISO standards by standard number.
The face has to be centered both vertically and horizontally. Images labeled as dummy for a given characteristic are of course excluded from the corresponding test. If in color, it should show skin tones naturally.
A precise formalization is here proposed to limit as much as possible the ambiguity. 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: Head coverings Head coverings shall not be accepted except in circumstances which the comptetent State authority specifically approves.
The database contains 5, images, gathered from different sources: Images have been reduced in size and compressed. Maio”A multi-classifier approach to face image segmentation for travel documents”Expert Systems With Applicationsvol.
In order to perform balanced tests, the testing set has been further divided into 24 subsets, each related to a specific characteristic. Quality io the photograph The portrait shall be in sharp focus from nose to ears, of high quality with no creases or ink marks. The database consists of fully compliant images i. Dynamic range of levels in the face area is recommended. Reflexion on the face. Skip to main content. For this reason machine-assisted face recognition from identity documents requires quite restrictive quality standards to be fulfilled.
Views Read Edit View history. The head should be upright so thaht an imaginary horizotal 1979-45 drawn between the centres of the eyes is parallel to the top edge of the picture.
The use of face as a biometric identifier has some drawbacks: Unfortunately, due to the lack of clear specifications and of an appropriate benchmark, comparing the performance of such systems is not easy. The photographs for travel documents usually needs to be recent – not older than 6 months – if submitted as a print, it should be on high quality paper with high resolution. 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 Face Image Type that specifies frontal images with sufficient resolution for human examination as well as reliable computer face recognition. This type of Face Image Type includes the full head with all hair in most cases, as well as neck and shoulders. 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 ISO standard donesn’t allow digital alteration of the image to correct the dynamic range or the colours.
Nowadays the digital images are replacing the traditional photos on photographic paper in all kind of applications: 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.
ICAO isso 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 machine assisted identity confirmation in Machine Readable Travel Documents MRTD.
Pose The applicant shall be shown facing square to the camera, not loking over one shoulder portrait style. 1979-5 biometric passport photos should comply with this standard. The rest of images are used for testing. The frames shall not cover any part of the eyes. Bibliography Click here if you are interested in any of the publications below.
ISO/IEC – Wikipedia
Eye glasses The portrait shall show the eyes with no light reflection off the glasses and no tinted lenses. Colours and lighting The portrait shall be colour neutral showin the applicant with eyes open and clearly visible.
To enable many applications on variety kso 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:.
Hair style and expression No hair shall obscure big areas of the face or the eyes.