When investigating a crime when the offender is unknown, but there are witnesses, usually make up sketch of the attacker. This requires special equipment and forensic or computer program. Quite simply - it is drawing up a portrait of a man of standard parts, which are available in the database with photos, search for it.

The complexity of drawing up an identikit high. It is important to make it as close as possible to the original. Therein lies the challenge. Make a sketch of a man - it's not all work. For the success of the search options to develop a predictable, but how that person can look in different situations: if it is in winter clothes, or with a beard, bald or tonsured, etc.

There are many methods, how and in what manner and with what primitives to put the image of man. Drawing up an identikit requires experience in accounting errors witnesses. In practice, there is always a witness sees differently, and these differences need to be taken into account to choose the right one, or all discarded as invalid hypothesis. For such a choice has to sort through a lot of options. It is important not to miss the correct version, which all agree, or at least the majority. To make a sketch of a man, it is necessary to identify the main features of the face, the most expressive part of a person, then all witnesses will be easier to work with criminologists.

When talking about the search for a missing person, it is sometimes necessary to guess the changes that occur with age, for example, if there is only a baby photo.

The secret is professional criminologists, except for special education, years of experience, including, and physiognomy. This experience allows you to get witnesses to all the information, without forgetting anything and everything in sight. This ensures the success of all the investigative detectives.

If you are in doubt about their capabilities, order sketch up without a photo, purely on your verbal description, and then compare with the original.

The results obtained identikit drawing, usually by the end of the working day, at least. When you are finished you will be able to look at the image of a portrait in profile and from the front, and a fully human figure in different poses in different clothes. Modern computer programs, it does not take much. Furthermore, such a portrait perform again let a computer search in databases or identikit pictures where you can find similar people and similar portraits.