opencv3.0

问题 I am trying to read and write jpegs wth Adobe RGB colorspace in OpenCV. OpenCV assumes the jpeg has sRGB colorspace and when displaying or writing to file, the image loses some of its color intensity. I found this intensity loss was due to colorspace difference by answers given to my previous question. Is there anyway I can make OpenCV to read Adobe RGB colorspace without casting it to sRGB? 回答1: Some information that is hopefully useful for anyone looking for a work-around for dealing with

问题 I am trying to read and write jpegs wth Adobe RGB colorspace in OpenCV. OpenCV assumes the jpeg has sRGB colorspace and when displaying or writing to file, the image loses some of its color intensity. I found this intensity loss was due to colorspace difference by answers given to my previous question. Is there anyway I can make OpenCV to read Adobe RGB colorspace without casting it to sRGB? 回答1: Some information that is hopefully useful for anyone looking for a work-around for dealing with

问题 I am trying to read and write jpegs wth Adobe RGB colorspace in OpenCV. OpenCV assumes the jpeg has sRGB colorspace and when displaying or writing to file, the image loses some of its color intensity. I found this intensity loss was due to colorspace difference by answers given to my previous question. Is there anyway I can make OpenCV to read Adobe RGB colorspace without casting it to sRGB? 回答1: Some information that is hopefully useful for anyone looking for a work-around for dealing with

问题 How do I pass a line through the center of a contour? I have the center coordinates of my contour. 回答1: This is how you solve this question - Original image - Result image - You first need to do basic filtering and find the contour. Then - 1) Find out the area of contour (minAreaRect) 2) Extract points from the contour (BoxPoints) 3) Convert it to a numpy array (np.array) 4) Order the points (perspective.order_points) 5) Take out Top-left, Top-right, Bottom-right and Bottom-left(tl, tr, br,

问题 i am using the new EmguCV 3.0.0 alpha to detect a chessboard with webcam and have an understanding problem with the corners matrix. Size patternSize = new Size(5, 4); Matrix<float> corners = new Matrix<float>(1, 2); bool find = CvInvoke.FindChessboardCorners(grayFrame, patternSize, corners, CalibCbType.AdaptiveThresh | CalibCbType.FilterQuads); CvInvoke.DrawChessboardCorners(grayFrame, patternSize, corners, find); if (find) { Console.Write(corners.Size); } The chessboard will be detected and

问题 i am using the new EmguCV 3.0.0 alpha to detect a chessboard with webcam and have an understanding problem with the corners matrix. Size patternSize = new Size(5, 4); Matrix<float> corners = new Matrix<float>(1, 2); bool find = CvInvoke.FindChessboardCorners(grayFrame, patternSize, corners, CalibCbType.AdaptiveThresh | CalibCbType.FilterQuads); CvInvoke.DrawChessboardCorners(grayFrame, patternSize, corners, find); if (find) { Console.Write(corners.Size); } The chessboard will be detected and

问题 I am trying to use a dicom image and manipulate it using OpenCV in a Python environment. So far I have used the pydicom library to read the dicom(.dcm) image data and using the pixel array attribute to display the picture using OpenCV imshow method. But the output is just a blank window. Here is the snippet of code I am using at this moment. import numpy as np import cv2 import pydicom as dicom ds=dicom.dcmread('sample.dcm') cv2.imshow('sample image dicom',ds.pixel_array) cv2.waitkey() If i

问题 I am trying to use a dicom image and manipulate it using OpenCV in a Python environment. So far I have used the pydicom library to read the dicom(.dcm) image data and using the pixel array attribute to display the picture using OpenCV imshow method. But the output is just a blank window. Here is the snippet of code I am using at this moment. import numpy as np import cv2 import pydicom as dicom ds=dicom.dcmread('sample.dcm') cv2.imshow('sample image dicom',ds.pixel_array) cv2.waitkey() If i

问题 I'm working on a project where I have to use openCV in java to identify the state of a tic tac toe board. Please see the sample program execution below. input Output X,-,- -,O,- X,-,- I'm trying to solve this by finding contours in the image, but the problem is that the empty unmarked boxes are also being captured and I'm not being able to distinguish between the shapes using contour properties like polygon size and contour area. Below is the code that I have so far. package finalproject;

问题 I'm working on a project where I have to use openCV in java to identify the state of a tic tac toe board. Please see the sample program execution below. input Output X,-,- -,O,- X,-,- I'm trying to solve this by finding contours in the image, but the problem is that the empty unmarked boxes are also being captured and I'm not being able to distinguish between the shapes using contour properties like polygon size and contour area. Below is the code that I have so far. package finalproject;