Creation of spherical panoramas for 3D

    In this tutorial I will show you how to make modern spherical panoramas from the point of view of practical applications in 3D. Why is that so many people still think that what would make spherical panorama you need to remove the ball coated with chrome. And use it two balls, one with a mirrored surface to remove the reflection, second Matt, to remove luminance maps which is why are people covering the 3D scene.

    In fact, for a long time, with the advent of digital technology, everything has changed. Now to get the spherical panoramas for 3D ideally should have a single-lens reflex camera with the functions breketingovoj and Fisheye lens. Lens fisheye allows only two opposite directions create a spherical pictures panorama. Breketingovaâ capture allows for 32 bit color depth (HDR), because the camera can capture in a single shot only 12-16 bit color is a series of shots with different exposures (or exposure), after which the snapshots link into one 32 bit image in a special program. For example, a PC monitor allows you to play only 6-8 bit color, that is too small and cannot be considered processing objects, looks up or looking up dark, because there is no colors just cut off their monitor. What you cannot do in 3D graphics, all must know that you in the shadows and light, otherwise the picture will not contrasting and not realistic. It’s like a B & W picture against color, only worse.

    fisheye fisheye
    As a result, the introduction of digital technology made it possible to achieve a quantum leap on several counts. First, the footage is perfect quality, without scratches and stains, as it happens on the balls. Second, a sharp rise in resolution panoramas and detailed in their use. In the third, sharply increased the depth of color images, with 6-8 bit when taking the ball to the 32 bit when shooting without the ball, so you can use it not only as a reference, but a card present environment for calculation of light and reflections.

    But what if there is no professional camera and lens fisheye. This article is going to make a spherical panorama with the usual SOAP-dish or amateurish zerkalku non breketingovoj and without fisheye lens.

    To start we need the material. To do this, take the camera and go to the place where we will take off. Select a point and observe its provisions, all images should be made from that point, otherwise the panorama is not matched. Photos better in portrait mode, so then it is easier to sew. First do one shot, turning our half sight video searcher (where was formerly the Centre must be edge, I do recall the objects) and do the next image, and thus not back to square one. So we got a horizontal circular panorama, now have to shoot top and bottom. To do this, turn the camera down to half of the zone of the visibility and again do such terms, then again and we had sex around themselves. Then the same principle take precedence. The principle is good so that is suitable for all type of cameras from any angle the lens, the smaller the angle the greater permission will have the final panorama. If you have a function breketing shoot-take. If you are afraid that the staff is not enough, boldly fotkajte more, they do not prevent, will only benefit especially worth helping customers leverage at the point at which you stand to take pictures of a point you can get underway. Better to shoot in manual mode, if any, if you havent half manual on automatic.

    In the end we should be around here is a set of photos
    Отснятые фотографии

    Photo shoots

    Now is the time to gather panoramas, there are a lot of tools but we will look at two main this old Stitcher and modern AutopanoGiga.

    AutodeskStitcher

    www.autodesk.com

    Once a very good program which bought Autodesk and simply ceased its development. The latest version is from the year 2009, and in the improvement of only a company name. A very good product with a very original approach to assembling panoramas, good opportunities for hand-built panoramas. Unfortunately does not support RAW and therefore need to work to convert all images in TIFF. In addition, all images must be of the same size must not be rotated pictures.

    Work it is very easy and nice enough to open an application, click Add pictures and they line up on the bar to the bottom. To begin building the first photo and Panorama, choose get it onto the toolbar.

    panorama
    The first picture on the stage

    Next, choose the following image, get her onto the Panel of approximately in the position where it should be, so the program will be easier to navigate. Then select the picture caught cntrl to which we wish to bind, and click StitchShot. And all the sector for the panorama image with the following pictures are based on the same principle.

    Склеивание фотографий
    Bonding photos

    So collect full horizontal circular panorama. If the panorama is not met in the last picture we stick together like a pie with a previous and very first. Once assembled, the horizontal panorama can be harvested and the NIH. To do this, get the first photo with lower camera angle and combine it with the very first pictures and then go in a circle, Peresekaûŝiejsâ photos will connect automatically means one more shot at this time would’ve tied to 2-4. If the photo does not bind or bind is not there, don’t worry, you can bind manually. To do this, choose just select two photos and press ManualStitch. In the window that appears, choose the matching terms from 6 to 9 would be sufficient, but the point should be as far apart.

    Ручное склеивание фотографий
    Manual gluing photos

    If the panorama has not be realised this year, try to go on the other hand, sometimes it helps. Once you have collected them can be collected up, there’s been all easier and faster. If a picture does not bind you can simply lock it at the current location, simply select the Force. This is particularly useful when building a clear sky, where bind is not what.

    Forc'им небо вручную

    Oh and when the whole panorama is assembled you can finally click on render, set the options you want, and finally glue already our spherical panorama. Notice the option Blend Mode in different situations you can make seamless panorama and not collected. After gluing our panorama finally adopted its normal.

    The resulting panorama

    Stitcher is a great tool, especially for its time, but unfortunately have not developed, many algorithms are lower than competitors, poor format support, 32 bit images can be done only if you used breketing photography.

    Kolor AutopanoGiga

    www.kolor.com

    After the death of Stitcher AutopanoGiga gradually supplanted the better programs for creating panoramas. It works on the principle of maximum automatic Assembly, supports all modern formats photos, lets get the 32 bit image even without breketingovoj shoot, simply remove the same place with different excerpts without bracketing, smooth out all of the program itself. In addition the program pretty accurately defines what photos are worth a glue together and rastravlâet them in the right position.

    Working with the program is just as simple. Just select an image from the panorama will be collected and then click Create. After creating a panorama.

    Забрасываем изображения в программу и нажимаем создать
    Drop the image into the program and click Create

    If you’re lucky, which is extremely rare, Panorama will be compiled without error, if not you will need to bring it to mind, for this click on the Edit button. Takes you to the window to adjust the connection manually. All you need to do is either manually add terms or select the same field and the program itself will fill their similar points.

    Ручное указание идентичных точек
    Manually specify identical pixels

    If there are holes in the panorama, the needed images to be delivered manually upload a picture and manually put the picture in the place where it is worth it, especially for the clear sky. You must also set the horizon, the program itself is rarely adequately defined.After all the settings, click collect panorama and admire the result.

    The resulting panorama

    The finished panorama is likely to be a few bad elements. First off this is not fusion with elements, this is for two reasons, there are several photos of the same scene but with another provision, such copies must be deleted manually, and the second reason for this shoot with the hands, with the hands is not possible to withdraw the entire panorama from the same point, which is the offset program is unable to fill. In order to get rid of such displacements have special mounting on a tripod, but is more expensive than the retention head SLR cameras. The second is unevenly lit clear sky, contrasting objects such artifacts are less visible, and program their attempts to equalise. To get rid of such zasvetov should be removed with a blend that no light is coming on your lens. The third program incorrectly sets the middle of panorama. All of these artifacts are not so hard to hide in Photoshop.

    Неверно сшитые элементы панорамы
    Incorrectly stitched panorama elements

    Both programs are not perfect and tend to be painted not merged elements in Photoshop. These methods are simple, but not with expensive technology to create panoramas, albeit with some effort. Naturally clear sky is the most difficult case to make the panorama rooms a lot easier, there is always that bind and havent for a one-color sky.

    Practical application of panoramas

    And now, how are these panoramas. Firstly it can used as affecting the object in mirror sites. Second, it can be used as a light source. In our case is only 16 bit image, but also its already quite successfully, you can apply.

    На панораме изображен белый круг
    The panorama shows the white circle

    In the picture you can see how the panorama as a light source. Each pixel panoramas carries information about brightness, saturation and color of each pixel in the specified direction. If the panorama is one big white dot it and works it like a point source of light. If the whole panorama of colour then it works the same as if each pixel is a lightbulb with environmental panorama color settings taken from the panorama. Accordingly, the higher the color depth of the picture, the more accurate will be the transfer of light.

    In the picture the two objects, a teapot to determine how light behaves and car (from Evermotion) which can be seen as a reflection.The teapot can be seen that he was just like the surrounding objects, in addition to the kettle, there are shadows from the ambient light is exactly the same as the surrounding objects. A reflection on the car behaves as it should itself take yours. The reflection was used for lighting and only our panorama. Unfortunately only 16-bit panorama and the contrast which would have failed, but the image can be processed and obtain the necessary photorealism. And here’s to build a drop shadow would add a point source of light and adjust its brightness and color manually. This is so that the panorama could not pass until such information.

    In the end we are having only 1 amateur mirror camera or SOAP-dish got quite high-quality panorama that allows us to get a photo realistic lighting and reflection. If you have any questions please write comments, I will edit the article as and when issues and inaccuracies.

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    19th February 2012 Articles, Home

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