bounding-box | 易学教程

zoom mapView to a certain bounding box on osmdroid

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问题 I want to use the zoomToBoundingBox method to zoom a map to a specific bounding box. The method does nothing but display the map on zoom level 0. In the mapView.java source code I found this: /** * Zoom the map to enclose the specified bounding box, as closely as possible. * Must be called after display layout is complete, or screen dimensions are not known, and * will always zoom to center of zoom level 0. * Suggestion: Check getScreenRect(null).getHeight() > 0 */ I checked getScreenRect

Find bounding rectangle of objects in monochrome bitmaps

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Given a monochrome bitmap: 000000000000000000000000000000000000000 001000100000000000000000000000000000000 000101000000000000000000000000000000000 000010000000001000000000000000000000000 000101000000010100000000000000000000000 001000100000100010000000000000000000000 000000000000010100000000000000000000000 000000000000001000000000000000000000000 000000000000000000000000000000000000000 000000000000001111110000000000000000000 000000000000001000010000000000000000000 000000000000001000010000000000000000000 000000000000001111110000000000000000000 000000000000000000000000000000000000000

C++ bounding box triangle collision

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问题 I need an algorithm for know if a bounding box axis align (like a cube but the sides are not equal) and a triangle intersect in a 3D space. I am doing the code in C++, if the solution is extremly long, better in C++ (if you can) :), if it is a few lines don't worry if it is another language. (Determine if a vertex of the triangle is inside the box is easy, but is not easy determine if if the box and the triangle intersects but all vertex are outside of the box and the triangle.) (An algorithm

Is there a way to get bounding boxes from the Microsoft's custom vision object detection model.pb file?

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问题 Is there a way to get bounding boxes of a particular object detected via Microsoft custom vision model.pb file? I know we can get that via API calls to the azure custom vision service. Say for example, we can get the bounding boxes from the ssd frozen inference graph.pb file as there are tensors present. Can we do the same for custom vision's model.pb file? This is the code that I am using the print out the operations for a tensorflow model and the output. detection_graph = tf.Graph() with

stored procedure to get all points inside a bounding box taking into account a negative longitude

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问题 I'm working on a project where I have places with latitude and longitude coordinates stored in my database. I use Google Maps to plot these places as markers on a map. I don't want to plot any "invisible" markers (markers outside the current viewport/bounding box) to the map. Therefore I follow Googles advice regarding viewport marker management. I have a working solution where i use AJAX to query an ASP.NET web service whenever the viewport of my map has changed. This web service calls a

Improve text area detection (OpenCV, Python)

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I am working on a project which ask me to detect text area in an image. This is the result I achieved until now using the code below. Original Image Result The code is the following: import cv2 import numpy as np # read and scale down image img = cv2.pyrDown(cv2.imread('C:\\Users\\Work\\Desktop\\test.png', cv2.IMREAD_UNCHANGED)) # threshold image ret, threshed_img = cv2.threshold(cv2.cvtColor(img, cv2.COLOR_BGR2GRAY), 127, 255, cv2.THRESH_BINARY) # find contours and get the external one image, contours, hier = cv2.findContours(threshed_img, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE) # with each

ZXing: Finding the bounding rectangle of Barcode

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问题 I was experimenting with ResultPoints which returns the points related to the barcode in the image. For a QR Code, ResultPoints returns a set of 4 points which are the coordinates of the four boxes at each corner of the QR Code. When I experimented the same with a Barcode, it returns two points which denote the width of the barcode. How do I find the bounding rectangle of the barcode? Is there any way by which I can calculate the coordinates of the top left corner and bottom right corner of

Doing Ajax updates in SVG breaks getBBox, is there a workaround?

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问题 I have an SVG page with some complex diagrams; I'm trying to add code that inserts even more complexity via an Ajax call on demand. This is mostly working, but the inserted nodes don't behave properly. In particular getBBox() fails on some elements, in Firefox the error is something like this: uncaught exception: [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIDOMSVGLocatable.getBBox]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: http:/

SFML Bounding Box Collision Detection

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I am trying to write a very basic game for my first SFML project. Its a robot with a jointed arm that will be able to pop balloons with his hand only. The problem I am having is that when checking to see if the pincer sprite intersects with the balloon sprite , it returns true all the time, regardless of the placement of the balloon or the robot pincer. I am using transform to place the various parts of the robot arm, and this is whats causing the problem I think, but I don't know why. I have tried using bounding box collision in a separate program where transform is not used and it worked

Changing SKSpriteNode Frame? Isometric challenges

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I hope we can figure out how to get around this interesting challenge with a game we are designing in an isometric style. Any help would be so awesome! QUESTION Is there a way to change the bounding box frame from a square to another shape? Maybe using a mask? PROBLEM Our problem is that we need our node's tappable area NOT to be square. Since we are tiling the nodes, their bounding boxes overlap each other, and we cannot accurately tap on the tile that we want. Hopefully our graphic below will show you what we are designing, our problem, and what our tappable area needs to be. Is there a way