Saat ini, jika sering menonton TV, maka Anda akan menemui banyaknya berita tentang kasus pelecehan yang dilakukan oleh seorang artis dan pembalap nasional terhadap partner bisnisnya. Dalam perkembangan lebih lanjutnya ditemukan adanya foto-foto yang diduga merupakan bukti otentik dari kasus tersebut. Untuk membuktikannya, polisi memanggil seseorang yang disebut pakar telematika.
Artikel ini tidak akan membahas mengenai kasus yang terjadi, apalagi pakar telematika tersebut. Artikel ini dimulai dari pemikiran betapa hebat sang pakar hingga bisa memperoleh informasi dari suatu file gambar. Eeee, gak begitu lama saya menemukan artikel mengenai Exchangeable Image File Format (Exif). Hebatnya lagi semua data itu bisa dilihat hanya dengan mengklik mouse. Jadi sekarang saya pakar telematika donk!!!! Pak-e Buk-e aku jadi bakalan masuk TV nih!!!
Exchangeable image file format (Exif) is a specification for the image file format used by digital cameras. The specification uses the existing JPEG, TIFF Rev. 6.0, and RIFF WAV file formats, with the addition of specific metadata tags. It is not supported in JPEG 2000, PNG, or GIF.Exif was created by the Japan Electronic Industries Development Association (JEIDA). Version 2.1 of the specification is dated June 12, 1998, and the latest, version 2.2 dated April 2002, is also known as Exif Print. Though the specification is not currently maintained by any industry or standards organisation, its use by camera manufacturers is nearly universal.
The metadata tags defined in the Exif standard cover a broad spectrum:
- Date and time information. Digital cameras will record the current date and time and save this in the metadata.
- Camera settings. This includes static information such as the camera model and make, and information that varies with each image such as orientation, aperture, shutter speed, focal length, metering mode, and ISO speed information.
- A thumbnail for previewing the picture on the camera's LCD screen, in file managers, or in photo manipulation software.
- Descriptions and copyright information.
Exif data is embedded within the image file itself. While many recent image manipulation programs recognize and preserve Exif data when writing to a modified image, this is not the case for most older programs. Many image gallery programs also recognise Exif data and optionally display it alongside the images.
In Windows XP and later Microsoft operating systems, a subset of the Exif information may be viewed by right clicking on an image file and clicking properties; from the properties dialog click the Summary tab. However, this can damage certain Exif headers if changes are applied. Other Windows software like Exif Harvester may be more reliable.
Sumber : Wikipedia
Artikel ini tidak akan membahas mengenai kasus yang terjadi, apalagi pakar telematika tersebut. Artikel ini dimulai dari pemikiran betapa hebat sang pakar hingga bisa memperoleh informasi dari suatu file gambar. Eeee, gak begitu lama saya menemukan artikel mengenai Exchangeable Image File Format (Exif). Hebatnya lagi semua data itu bisa dilihat hanya dengan mengklik mouse. Jadi sekarang saya pakar telematika donk!!!! Pak-e Buk-e aku jadi bakalan masuk TV nih!!!
Exchangeable image file format (Exif) is a specification for the image file format used by digital cameras. The specification uses the existing JPEG, TIFF Rev. 6.0, and RIFF WAV file formats, with the addition of specific metadata tags. It is not supported in JPEG 2000, PNG, or GIF.Exif was created by the Japan Electronic Industries Development Association (JEIDA). Version 2.1 of the specification is dated June 12, 1998, and the latest, version 2.2 dated April 2002, is also known as Exif Print. Though the specification is not currently maintained by any industry or standards organisation, its use by camera manufacturers is nearly universal.
The metadata tags defined in the Exif standard cover a broad spectrum:
- Date and time information. Digital cameras will record the current date and time and save this in the metadata.
- Camera settings. This includes static information such as the camera model and make, and information that varies with each image such as orientation, aperture, shutter speed, focal length, metering mode, and ISO speed information.
- A thumbnail for previewing the picture on the camera's LCD screen, in file managers, or in photo manipulation software.
- Descriptions and copyright information.
Exif data is embedded within the image file itself. While many recent image manipulation programs recognize and preserve Exif data when writing to a modified image, this is not the case for most older programs. Many image gallery programs also recognise Exif data and optionally display it alongside the images.
In Windows XP and later Microsoft operating systems, a subset of the Exif information may be viewed by right clicking on an image file and clicking properties; from the properties dialog click the Summary tab. However, this can damage certain Exif headers if changes are applied. Other Windows software like Exif Harvester may be more reliable.
Sumber : Wikipedia
Comments