How to use picollator.ru. What to expect from him and what not

    Finding the right information on the Internet is not such a simple matter. It would seem that search services indexed everything for a long time and learned how to quickly detect newly appearing sites. You can search not only pages, but also video, audio, etc. (how, this is another question).
    For especially patient people with an analytical mindset, they have come up with advanced opportunities for constructing queries for search. (I personally rarely use them, but, probably, someone cannot imagine their life without them). Formulas for calculating the relevance of ratings of results save us a lot of time viewing the information found. Still, for example, there are services that you can sing a song into the handset - and they will tell you exactly what the song was and let you listen to the original. By the way, the service is innovative. This is one of the few examples where the search is carried out not by a text phrase, but directly by digital "content". Very funny, try if your company pays you for telephone bills. By the way, we’ll try to find this service, for example, in Yahoo with the request “sing to find an audio site service”. And what do we see? Baths and saunas in Moscow, the diary of Alexander Zhdanov ... And where is the necessary service?

    Searching for objects using keywords and phrases is the standard way to search the Internet. Yes, you can additionally set filters by country, language, file type or domain. But the right search query is the key to success. The problem is that it is not always possible in principle to formulate a text query. The only way is to use the content as a request.
    When working with the picollator.ru image information retrieval service, this rule remains valid. Instead of a text request, you need to select the image request. In other words, we need a fairly good photo of the person whose information we want to find.
    Which photo should I submit to search for optimal results? To get started, take a look at the FAQ published on the service website at www.picollator.ru/ru/faqand scroll to the question "Are there requirements for uploaded photos?" We carefully read the answer:
    Image type: TIFF, PNG, JPEG, BMP
    Resolution: no more than 25 megapixels
    Image size: 128 * 128 pixels or more.

    These are very important parameters. If the image you upload for the search does not match any of the given requirements, you will not find anything. And there is one important consequence of the requirement for image size - if the linear dimensions of the face in the photo are less than 128 * 128 pixels, you will not find it either. Even if the photo itself is large enough, but the faces on it look like peas, then do not expect good results.

    An ideal photograph is a “passport photograph”:
    1. Solid background;
    2. The hair is combed back (the face is not blocked by other objects);
    3. Without glasses;
    4. Eyes look forward (there are no turns and tilts of the head);
    5. Mimicry is missing;
    6. The lighting is uniform;
    7. The line connecting the eyes is horizontal;
    8. The face is fully placed on the photograph.
    9.Size: 1200x900 pixels.
    10.Face size: at least 500x500 pixels.
    From these points, the user needs to make one main conclusion. The eye area in the photo will be critical to the search results.

    By the way, I want to make one important reservation. The picollator.ru service does not save the photos that you submit as a search request, and therefore does not use them in any way. When you see the search result on your screen, your photo is no longer on the server. And therefore, if you want to use the same photo again as a request, you will have to upload it again. However, the search results may change only if there are changes in the index during the search.

    The location of the face in the photo is very important. Turn ready, raised or lowered chin, hair combed to the forehead or back. There are plenty of nuances. And if the person you are looking for is a woman who knows the art of makeup, then you can expect very different results depending on different photos. About the effect of age on a person’s face, it’s not worth talking about. And how our mood can change our face! Let's look at the following example. We have 3 photos of one girl, try to find something in picollator.ru.

    In the first photo, the girl stands exactly.


    We complicate the task and ask our model to tilt her head.

    The results have changed markedly. The main role here was played by a strand of hair that fell on my eyes.

    Now take a larger plan:


    The results were quite different, although overlapping. But this is all one and the same girl, shot at about the same time on the same camera with the same lighting! We conclude - to obtain more objective results, it is advisable for you to prepare several photos of the right person.

    What can we see in the results? Picollator.ru is a rather young service, and the volume of crawled and indexed data is still small. Therefore, at this stage, most likely, exactly the same faces will be found, and they will be similar to your specific photo. The ambiguity of images is much higher than the ambiguity of words. This must be understood and taken into account.

    The following important point concerns the correct understanding of the results that you see in front of you. When you start a search with a key phrase, search engines return results sorted by relevance with good enough (but not always!) Accuracy. And you, most likely, have long been accustomed to this. When searching on picollator.ru, it is guaranteed that if there is already a photograph in the index, an exact copy of the one you submit to the search, you will receive it first in the list of results. But this should be an exact copy in all respects.

    How is the list of results formed? To do this, we read in the FAQ the answer to a question that, at first glance, has little relevance to our topic “How does the“ Find Similar ”function work?” Answer: “When you click on the“ Find Similar ”link under one of the photos, the search engine will show similar images from the index to you. When processing photos, clusters (groups) of images are created that are most similar to each other. Thus, when you click on the “Find Similar” button, you see images that the system assigns to one cluster. "For us, of particular interest is the phrase" When processing photographs, clusters (groups) of images are created that are most similar to each other. ”This means that similar images are grouped together. When a search is carried out, for the photo from the condition there are several most similar groups, which appear in the results. The fact that a group is similar to some kind of photograph means that the entire set of photographs of this group “on average” looks like a given photograph. Therefore, on the screen you can see several similar faces in the results, as well as a certain number of other less similar results. Over time, these groups may be rearranged and results may improve. 100% result is not guaranteed by any search engine on the Internet, at least, modern. Over time, these groups may be rearranged and results may improve. 100% result is not guaranteed by any search engine on the Internet, at least, modern. Over time, these groups may be rearranged and results may improve. 100% result is not guaranteed by any search engine on the Internet, at least, modern.

    In conclusion, I will say that the Picollator Online service is not a criminal investigation. He does not compare the left eye with the left eye, nose with nose, ear with ear. The methods are slightly different. It also does not guarantee an accurate identification of a person by a photobot, even if very skillfully composed. But its results may well be useful to you as the system develops, because with the help of the picollator you can find pages that contain collections of the photographs you need.

    How to find the very service that determines the melody by the phone call? The service is British and therefore knowledge of English is useful here. Let the phrase “search service audio by phone” be. Didn’t work again? Then another request to Yahoo is “discovery engine music”. And please www.shazam.com/music/portal. This is what a high-quality search query means.

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