![]() ![]() # unpack the images, then detect keypoints and extract Next up, let’s start working on the stitch method: def stitch(self, images, ratio=0.75, reprojThresh=4.0, Since there are major differences in how OpenCV 2.4 and OpenCV 3 handle keypoint detection and local invariant descriptors, it’s important that we determine the version of OpenCV that we are using. The constructor to Stitcher simply checks which version of OpenCV we are using by making a call to the is_cv3 method. We’ll be using NumPy for matrix/array operations, imutils for a set of OpenCV convenience methods, and finally cv2 for our OpenCV bindings.įrom there, we define the Stitcher class on Line 6. We start off on Lines 2-4 by importing our necessary packages. ![]() Self.isv3 = imutils.is_cv3(or_better=True) Let’s go ahead and get started by reviewing panorama.py : # import the necessary packages The Stitcher class will rely on the imutils Python package, so if you don’t already have it installed on your system, you’ll want to go ahead and do that now: $ pip install imutils We’ll encapsulate all four of these steps inside panorama.py, where we’ll define a Stitcher class used to construct our panoramas. Step #4: Apply a warping transformation using the homography matrix obtained from Step #3.Step #3: Use the RANSAC algorithm to estimate a homography matrix using our matched feature vectors.Step #2: Match the descriptors between the two images.Step #1: Detect keypoints (DoG, Harris, etc.) and extract local invariant descriptors (SIFT, SURF, etc.) from the two input images.Our panorama stitching algorithm consists of four steps: Get creative and be open to the possibilities for your panoramic photography, whether you are shooting close to home, or in an exotic location anywhere in the world.Looking for the source code to this post? Jump Right To The Downloads Section OpenCV panorama stitching As you get more advanced, you may have different gear that is your go-to for different projects. If you are thinking about mountain adventures, then expedition backpacks or PhotoSport backpacks may be for you. Knowing that you’ll want some kind of backpack and tripod, consider the environments you’d like to photograph, and you can purchase your gear accordingly. With an overview of some essential panoramic photography gear, you might now be wondering how you can pick the best gear for your setup. As you get more involved in your panoramic photography - and if you will be shooting closer to home - you might opt for camera hard cases, which provide extra protection and can be hand-carried. Expedition backpacks come in many sizes and capabilities, and something like the DryZone 200 can work for short trips when you need to keep your gear dry, without carrying extra weight. If you are on the go while shooting, you’ll want a backpack that can help you easily carry that essential tripod. Moreover, a tripod with a panning function and a level base can make it easier for you to frame these images. But, adding a tripod to your gear will improve the level of precision when you stitch photos together. That means that it’s possible to produce quality panoramic shots without a tripod. Here’s a guide to capturing dynamic panorama photos and the gear that will support you in coming back with your winning shots.įor great panoramic photography, all you really need is a camera and a steady hand. There are many options and the one that is right for you will depend on how extreme you want to go - whether you are hiking, skiing, or climbing to frame the perfect shot - and the conditions you’ll most likely be shooting in. When we are talking about panoramic photography, it’s always shooting outdoors, where camera backpacks are essential to carry all of your gear with you. Panoramic photography can be especially compelling for winter landscapes, focusing on snow patterns in a forest, incorporating color contrast and negative space, and playing with different perspectives. Because a panoramic image shares a wide view, it can tell a complex story about a place - such as showing the patterns in a forest or a mountain range, or how weather silhouettes are moving across the sky. While it takes some preparation, when you shoot in panorama, the results can be dramatic images, capturing the essence of a place and a season. For nature photographers, there is no doubt that panorama photos are a popular technique. ![]()
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