<p>Returns a matrix size.</p> <p>The method returns a matrix size: <code>Size(cols, rows)</code>. When the matrix is more than 2-dimensional, the ret

<p>Returns <code>true</code> if the array has no elements.</p> <p>The method returns <code>true</code> if <code>Mat.total()</code> is 0 or if <code>M

<p>Calculates the per-element sum of two arrays or an array and a scalar.</p> <p>The function <code>add</code> calculates:</p> <ul> <li> Sum of two

<p>Allocates new array data if needed.</p> <p>This is one of the key <code>Mat</code> methods. Most new-style OpenCV functions and methods that produ

<p>Returns the type of a matrix element.</p> <p>The method returns a matrix element type. This is an identifier compatible with the <code>CvMat</code

<p>Calculates per-element minimum of two arrays or an array and a scalar.</p> <p>The functions <code>min</code> calculate the per-element minimum of

Converts Android Bitmap to OpenCV Mat. <p> This function converts an Android Bitmap image to the OpenCV Mat. <br>'ARGB_8888' and 'RGB_565' input Bitma

Converts OpenCV Mat to Android Bitmap. <p> <br>This function converts an image in the OpenCV Mat representation to the Android Bitmap. <br>The input M

<p>Calculates per-element maximum of two arrays or an array and a scalar.</p> <p>The functions <code>max</code> calculate the per-element maximum of

Callback method, called after OpenCV library initialization. @param status status of initialization (see initialization status constants).

<p>Converts an image from one color space to another.</p> <p>The function converts an input image from one color space to another. In case of a trans

<p>Returns the total number of array elements.</p> <p>The method returns the number of array elements (a number of pixels if the array represents an

Called when mSyncObject lock is held

<p>Raises every array element to a power.</p> <p>The function <code>pow</code> raises every element of the input array to <code>power</code> :</p> <

<p>Flips a 2D array around vertical, horizontal, or both axes.</p> <p>The function <code>flip</code> flips the array in one of three different ways (

<p>Open video file or a capturing device for video capturing</p> <p>The methods first call "VideoCapture.release" to close the already opened file or

Callback method, called in case the package installation is needed. @param callback answer object with approve and cancel methods and the package desc

<p>Divides a multi-channel array into several single-channel arrays.</p> <p>The functions <code>split</code> split a multi-channel array into separat

<p>Transposes a matrix.</p> <p>The function "transpose" transposes the matrix <code>src</code> :</p> <p><em>dst(i,j) = src(j,i)</em></p> <p>Note: N

<p>Finds edges in an image using the [Canny86] algorithm.</p> <p>The function finds edges in the input image <code>image</code> and marks them in the

图像裁剪

对传入的图片进行人脸检测

This method is invoked when delivery of the frame needs to be done. The returned values - is a modified frame which needs to be displayed on the scree

<p>Grabs, decodes and returns the next video frame.</p> <p>The methods/functions combine "VideoCapture.grab" and "VideoCapture.retrieve" in one call.

<p>Decrements the reference counter and deallocates the matrix if needed.</p> <p>The method decrements the reference counter associated with the matr

<p>Resizes an image.</p> <p>The function <code>resize</code> resizes the image <code>src</code> down to or up to the specified size.Note that the ini

设置摄像机画面的显示方向

设置摄像机画面的显示方向

<p>Calculates a square root of array elements.</p> <p>The functions <code>sqrt</code> calculate a square root of each input array element. In case of

<p>Blurs an image using a Gaussian filter.</p> <p>The function convolves the source image with the specified Gaussian kernel. In-place filtering is s

<p>Calculates a contour perimeter or a curve length.</p> <p>The function computes a curve length or a closed contour perimeter.</p> @param curve Inp

<p>Blurs an image using the normalized box filter.</p> <p>The function smoothes an image using the kernel:</p> <p><em>K = 1/(ksize.width ksize.heigh

This helper method can be called by subclasses to select camera preview size. It goes over the list of the supported preview sizes and selects the max

计算图片适合显示的大小