学习opencv_学习笔记三
第四章 细说HighGUI
一个可移植的图形工具包
由以下三部分组成:
硬件部分
文件部分
图形用户界面
1创建窗口
所用到函数:
/* create window 创建窗口*/
CVAPI(int) cvNamedWindow( const char* name, //窗口名称
int flags CV_DEFAULT(CV_WINDOW_AUTOSIZE) );//根据图像自动调整大小
/* destroy window and all the trackers associated with it 销毁窗口 */
CVAPI(void) cvDestroyWindow( const char* name );//窗口名称
/* get native window handle (HWND in case of Win32 and Widget in case of X Window) */
//窗口系统,windows下返回HWND
CVAPI(void*) cvGetWindowHandle( const char* name );
/* get name of highgui window given its native handle 取得窗口名称*/
CVAPI(const char*) cvGetWindowName( void* window_handle );
/* resize/move window 调整窗口大小*/
CVAPI(void) cvResizeWindow( const char* name, int width, int height );
//移动窗口 ,xy为左上角坐标
CVAPI(void) cvMoveWindow( const char* name, int x, int y );
示例代码如下:
#include <opencv2\opencv.hpp>
using namespace cv;
int main(int argc,char** argv) {
//创建窗口
cvNamedWindow("test");
//调整窗口大小
cvResizeWindow("test",800,600);
//移动窗口
cvMoveWindow("test", 80, 80);
//等待用户按键
cvWaitKey();
//释放窗口
cvDestroyWindow("test");
}
2载入图像
所用到函数
//载入图像
CVAPI(IplImage*) cvLoadImage( const char* filename, // 文件名
int iscolor CV_DEFAULT(CV_LOAD_IMAGE_COLOR));//
Iscolor的常量值
/* 8bit, color or not */
CV_LOAD_IMAGE_UNCHANGED =-1,
/* 8bit, gray */
CV_LOAD_IMAGE_GRAYSCALE =0, //单通道
/* ?, color */
CV_LOAD_IMAGE_COLOR =1, //三通道
/* any depth, ? */
CV_LOAD_IMAGE_ANYDEPTH =2,//非8位图像
/* ?, any color */
CV_LOAD_IMAGE_ANYCOLOR =4 //原始通道读入
//保存图像
/* save image to file */
CVAPI(int) cvSaveImage( const char* filename, //文件名
const CvArr* image, //图像数组,
const int* params CV_DEFAULT(0) );
3显示图像
/* display image within window (highgui windows remember their content) */
CVAPI(void) cvShowImage( const char* name, //窗口名称
const CvArr* image );//图像 IplImage*
//关闭所有窗口,释放内存
CVAPI(void) cvDestroyAllWindows(void);
//创建线程,处理窗口更新
CVAPI(int) cvStartWindowThread( void );
//等待用户按键,为0时无限等待
/* wait for key event infinitely (delay<=0) or for "delay" milliseconds */
CVAPI(int) cvWaitKey(int delay CV_DEFAULT(0));
示例代码如下:
鼠标事件
//回调函数的格式
typedef void (CV_CDECL *CvMouseCallback )(int event, //事件类型
int x, //事件发生时鼠标位置
int y,
int flags, //事件发生时的不同状态
void* param); //额外参数
Event的取值:
CV_EVENT_MOUSEMOVE =0,
CV_EVENT_LBUTTONDOWN =1,
CV_EVENT_RBUTTONDOWN =2,
CV_EVENT_MBUTTONDOWN =3,
CV_EVENT_LBUTTONUP =4,
CV_EVENT_RBUTTONUP =5,
CV_EVENT_MBUTTONUP =6,
CV_EVENT_LBUTTONDBLCLK =7,
CV_EVENT_RBUTTONDBLCLK =8,
CV_EVENT_MBUTTONDBLCLK =9,
CV_EVENT_MOUSEWHEEL =10,
CV_EVENT_MOUSEHWHEEL =11
Flag的取值
CV_EVENT_FLAG_LBUTTON =1,
CV_EVENT_FLAG_RBUTTON =2,
CV_EVENT_FLAG_MBUTTON =4,
CV_EVENT_FLAG_CTRLKEY =8,
CV_EVENT_FLAG_SHIFTKEY =16,
CV_EVENT_FLAG_ALTKEY =32
//注册回调函数
/* assign callback for mouse events */
CVAPI(void) cvSetMouseCallback( const char* window_name, //窗体名称
CvMouseCallback on_mouse,//回调函数
void* param CV_DEFAULT(NULL));//额外信息
示例代码:
#include <opencv2\opencv.hpp>
using namespace cv;
//鼠标在窗口中画方形的程序
//函数声明
void my_mouse_callback(int event, int x,int y,int flags,void* param);
//矩形
CvRect box;
//绘制状态
bool drawing_box = false;
//绘制矩形
void draw_box(IplImage* img, CvRect rect) {
cvRectangle(
img,//目标图像
cvPoint(box.x, box.y),//矩形坐标
cvPoint(box.x + box.width, box.y + box.height),
cvScalar(0xff,0x00,0x00)//颜色
);
}
int main(int argc,char** argv) {
box = cvRect(-1,-1,0,0);
//创建图像
IplImage* image = cvCreateImage(
cvSize(800,600),
IPL_DEPTH_8U,
3
);
cvZero(image);
IplImage* temp = cvCloneImage(image);
//创建窗口
cvNamedWindow("Box Example");
//注册鼠标加调函数
cvSetMouseCallback(
"Box Example",
my_mouse_callback,
(void*) image
);
while (1)
{
cvCopy(image,temp);//复制图像
if (drawing_box) {
draw_box(temp,box);
}
cvShowImage("Box Example", temp);//显示图片
//esc退出
if (cvWaitKey(15) == 27) {
break;
}
}
//清理工作
cvReleaseImage(&image);
cvReleaseImage(&temp);
cvDestroyWindow("Box Example");
}
/*
鼠标事件回调函数
*/
void my_mouse_callback(int event, int x, int y, int flags, void* param) {
IplImage* image = (IplImage*)param;
switch (event)
{
case CV_EVENT_MOUSEMOVE: {
if (drawing_box) {
box.width = x - box.x;
box.height = y - box.y;
}
}
break;
case CV_EVENT_LBUTTONDOWN: {//鼠标标按下开始绘制矩形
drawing_box = true;
box = cvRect(x, y, 0, 0);
}
break;
case CV_EVENT_LBUTTONUP: {//绘制矩形
drawing_box = false;
if (box.width < 0) {
box.x += box.width;
box.width *= -1;
}
if (box.height) {
box.y += box.height;
box.height *= -1;
}
draw_box(image,box);
}
break;
default:
break;
}
}
Sliders trackbars switches
//滑动条
/* create trackbar and display it on top of given window, set callback */
CVAPI(int) cvCreateTrackbar( const char* trackbar_name, //滑动条名称
const char* window_name, //所属窗体名称
int* value, //当前值 position
int count, //最大值
//指向回调函数的指针
CvTrackbarCallback on_change CV_DEFAULT(NULL));
//读取和设置滚动条
/* retrieve or set trackbar position */
CVAPI(int) cvGetTrackbarPos( const char* trackbar_name, //滑动条名称
const char* window_name );//窗体名称
CVAPI(void) cvSetTrackbarPos( const char* trackbar_name, const char* window_name, int pos );
CVAPI(void) cvSetTrackbarMax(const char* trackbar_name, const char* window_name, int maxval);
CVAPI(void) cvSetTrackbarMin(const char* trackbar_name, const char* window_name, int minval);
#include <opencv2\opencv.hpp>
using namespace cv;
//滑动条,实现开关功能
int g_switch_value = 0;
//滑动条回调函数
void Switch_callback(int position) {
if (position==0) {
//switch_off_function();
}
else {
//switch_on_function();
}
}
int main(int argc,char** argv) {
cvNamedWindow("Demo Windows",1);
//创建滑动条
cvCreateTrackbar(
"Switch",//滑动条名称
"Demo Windows",//所属窗体
&g_switch_value,//当前值
1,//最大值
Switch_callback//回调函数
);
while (1)
{
if (cvWaitKey(15) == 27) {
break;
}
}
}
4视频处理
//读取视频文件
/* start capturing frames from video file */
CVAPI(CvCapture*) cvCreateFileCapture( const char* filename );//视频文件名
//读摄像头视频
/* start capturing frames from camera: index = camera_index + domain_offset (CV_CAP_*) */
CVAPI(CvCapture*) cvCreateCameraCapture( int index );
Index所用常量
CV_CAP_ANY =0, // autodetect
CV_CAP_MIL =100, // MIL proprietary drivers
CV_CAP_VFW =200, // platform native
CV_CAP_V4L =200,
CV_CAP_V4L2 =200,
CV_CAP_FIREWARE =300, // IEEE 1394 drivers
CV_CAP_FIREWIRE =300,
CV_CAP_IEEE1394 =300,
CV_CAP_DC1394 =300,
CV_CAP_CMU1394 =300,
CV_CAP_STEREO =400, // TYZX proprietary drivers
CV_CAP_TYZX =400,
CV_TYZX_LEFT =400,
CV_TYZX_RIGHT =401,
CV_TYZX_COLOR =402,
CV_TYZX_Z =403,
CV_CAP_QT =500, // QuickTime
CV_CAP_UNICAP =600, // Unicap drivers
CV_CAP_DSHOW =700, // DirectShow (via videoInput)
CV_CAP_MSMF =1400, // Microsoft Media Foundation (via videoInput)
CV_CAP_PVAPI =800, // PvAPI, Prosilica GigE SDK
CV_CAP_OPENNI =900, // OpenNI (for Kinect)
CV_CAP_OPENNI_ASUS =910, // OpenNI (for Asus Xtion)
CV_CAP_ANDROID =1000, // Android - not used
CV_CAP_ANDROID_BACK =CV_CAP_ANDROID+99, // Android back camera - not used
CV_CAP_ANDROID_FRONT =CV_CAP_ANDROID+98, // Android front camera - not used
CV_CAP_XIAPI =1100, // XIMEA Camera API
CV_CAP_AVFOUNDATION = 1200, // AVFoundation framework for iOS (OS X Lion will have the same API)
CV_CAP_GIGANETIX = 1300, // Smartek Giganetix GigEVisionSDK
CV_CAP_INTELPERC = 1500, // Intel Perceptual Computing
CV_CAP_OPENNI2 = 1600, // OpenNI2 (for Kinect)
CV_CAP_GPHOTO2 = 1700,
CV_CAP_GSTREAMER = 1800, // GStreamer
CV_CAP_FFMPEG = 1900, // FFMPEG
CV_CAP_IMAGES = 2000 // OpenCV Image Sequence (e.g. img_%02d.jpg)
读视频
//
/* grab a frame, return 1 on success, 0 on fail.
this function is thought to be fast */
CVAPI(int) cvGrabFrame( CvCapture* capture );
/* get the frame grabbed with cvGrabFrame(..)
This function may apply some frame processing like
frame decompression, flipping etc.
!!!DO NOT RELEASE or MODIFY the retrieved frame!!! */
CVAPI(IplImage*) cvRetrieveFrame( CvCapture* capture,
int streamIdx CV_DEFAULT(0) );
/* Just a combination of cvGrabFrame and cvRetrieveFrame
!!!DO NOT RELEASE or MODIFY the retrieved frame!!! */
CVAPI(IplImage*) cvQueryFrame( CvCapture* capture );
//读取和设置视频属性
/* retrieve or set capture properties */
CVAPI(double) cvGetCaptureProperty( CvCapture* capture,
int property_id );
CVAPI(int) cvSetCaptureProperty( CvCapture* capture,
int property_id,
double value );
property_id 的取值
CV_CAP_PROP_DC1394_OFF = -4, //turn the feature off (not controlled manually nor automatically)
CV_CAP_PROP_DC1394_MODE_MANUAL = -3, //set automatically when a value of the feature is set by the user
CV_CAP_PROP_DC1394_MODE_AUTO = -2,
CV_CAP_PROP_DC1394_MODE_ONE_PUSH_AUTO = -1,
CV_CAP_PROP_POS_MSEC =0, //视频的当前位置 毫秒
CV_CAP_PROP_POS_FRAMES =1, //以帧为单位的当前值
CV_CAP_PROP_POS_AVI_RATIO =2, //0-1之间的数
CV_CAP_PROP_FRAME_WIDTH =3, //宽度
CV_CAP_PROP_FRAME_HEIGHT =4, //高度
CV_CAP_PROP_FPS =5, //每秒钟的帧数
CV_CAP_PROP_FOURCC =6, //视频的压缩方法
CV_CAP_PROP_FRAME_COUNT =7, //视频的总帧数
CV_CAP_PROP_FORMAT =8,
CV_CAP_PROP_MODE =9,
CV_CAP_PROP_BRIGHTNESS =10,
CV_CAP_PROP_CONTRAST =11,
CV_CAP_PROP_SATURATION =12,
CV_CAP_PROP_HUE =13,
CV_CAP_PROP_GAIN =14,
CV_CAP_PROP_EXPOSURE =15,
CV_CAP_PROP_CONVERT_RGB =16,
CV_CAP_PROP_WHITE_BALANCE_BLUE_U =17,
CV_CAP_PROP_RECTIFICATION =18,
CV_CAP_PROP_MONOCHROME =19,
CV_CAP_PROP_SHARPNESS =20,
CV_CAP_PROP_AUTO_EXPOSURE =21, // exposure control done by camera,
// user can adjust refernce level
// using this feature
CV_CAP_PROP_GAMMA =22,
CV_CAP_PROP_TEMPERATURE =23,
CV_CAP_PROP_TRIGGER =24,
CV_CAP_PROP_TRIGGER_DELAY =25,
CV_CAP_PROP_WHITE_BALANCE_RED_V =26,
CV_CAP_PROP_ZOOM =27,
CV_CAP_PROP_FOCUS =28,
CV_CAP_PROP_GUID =29,
CV_CAP_PROP_ISO_SPEED =30,
CV_CAP_PROP_MAX_DC1394 =31,
CV_CAP_PROP_BACKLIGHT =32,
CV_CAP_PROP_PAN =33,
CV_CAP_PROP_TILT =34,
CV_CAP_PROP_ROLL =35,
CV_CAP_PROP_IRIS =36,
CV_CAP_PROP_SETTINGS =37,
CV_CAP_PROP_BUFFERSIZE =38,
CV_CAP_PROP_AUTOFOCUS =39,
CV_CAP_PROP_SAR_NUM =40,
CV_CAP_PROP_SAR_DEN =41,
CV_CAP_PROP_AUTOGRAB =1024, // property for videoio class CvCapture_Android only
CV_CAP_PROP_SUPPORTED_PREVIEW_SIZES_STRING=1025, // readonly, tricky property, returns cpnst char* indeed
CV_CAP_PROP_PREVIEW_FORMAT=1026, // readonly, tricky property, returns cpnst char* indeed
// OpenNI map generators
CV_CAP_OPENNI_DEPTH_GENERATOR = 1 << 31,
CV_CAP_OPENNI_IMAGE_GENERATOR = 1 << 30,
CV_CAP_OPENNI_GENERATORS_MASK = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_OPENNI_IMAGE_GENERATOR,
// Properties of cameras available through OpenNI interfaces
CV_CAP_PROP_OPENNI_OUTPUT_MODE = 100,
CV_CAP_PROP_OPENNI_FRAME_MAX_DEPTH = 101, // in mm
CV_CAP_PROP_OPENNI_BASELINE = 102, // in mm
CV_CAP_PROP_OPENNI_FOCAL_LENGTH = 103, // in pixels
CV_CAP_PROP_OPENNI_REGISTRATION = 104, // flag
CV_CAP_PROP_OPENNI_REGISTRATION_ON = CV_CAP_PROP_OPENNI_REGISTRATION, // flag that synchronizes the remapping depth map to image map
// by changing depth generator's view point (if the flag is "on") or
// sets this view point to its normal one (if the flag is "off").
CV_CAP_PROP_OPENNI_APPROX_FRAME_SYNC = 105,
CV_CAP_PROP_OPENNI_MAX_BUFFER_SIZE = 106,
CV_CAP_PROP_OPENNI_CIRCLE_BUFFER = 107,
CV_CAP_PROP_OPENNI_MAX_TIME_DURATION = 108,
CV_CAP_PROP_OPENNI_GENERATOR_PRESENT = 109,
CV_CAP_PROP_OPENNI2_SYNC = 110,
CV_CAP_PROP_OPENNI2_MIRROR = 111,
CV_CAP_OPENNI_IMAGE_GENERATOR_PRESENT = CV_CAP_OPENNI_IMAGE_GENERATOR + CV_CAP_PROP_OPENNI_GENERATOR_PRESENT,
CV_CAP_OPENNI_IMAGE_GENERATOR_OUTPUT_MODE = CV_CAP_OPENNI_IMAGE_GENERATOR + CV_CAP_PROP_OPENNI_OUTPUT_MODE,
CV_CAP_OPENNI_DEPTH_GENERATOR_BASELINE = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_PROP_OPENNI_BASELINE,
CV_CAP_OPENNI_DEPTH_GENERATOR_FOCAL_LENGTH = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_PROP_OPENNI_FOCAL_LENGTH,
CV_CAP_OPENNI_DEPTH_GENERATOR_REGISTRATION = CV_CAP_OPENNI_DEPTH_GENERATOR + CV_CAP_PROP_OPENNI_REGISTRATION,
CV_CAP_OPENNI_DEPTH_GENERATOR_REGISTRATION_ON = CV_CAP_OPENNI_DEPTH_GENERATOR_REGISTRATION,
// Properties of cameras available through GStreamer interface
CV_CAP_GSTREAMER_QUEUE_LENGTH = 200, // default is 1
// PVAPI
CV_CAP_PROP_PVAPI_MULTICASTIP = 300, // ip for anable multicast master mode. 0 for disable multicast
CV_CAP_PROP_PVAPI_FRAMESTARTTRIGGERMODE = 301, // FrameStartTriggerMode: Determines how a frame is initiated
CV_CAP_PROP_PVAPI_DECIMATIONHORIZONTAL = 302, // Horizontal sub-sampling of the image
CV_CAP_PROP_PVAPI_DECIMATIONVERTICAL = 303, // Vertical sub-sampling of the image
CV_CAP_PROP_PVAPI_BINNINGX = 304, // Horizontal binning factor
CV_CAP_PROP_PVAPI_BINNINGY = 305, // Vertical binning factor
CV_CAP_PROP_PVAPI_PIXELFORMAT = 306, // Pixel format
// Properties of cameras available through XIMEA SDK interface
CV_CAP_PROP_XI_DOWNSAMPLING = 400, // Change image resolution by binning or skipping.
CV_CAP_PROP_XI_DATA_FORMAT = 401, // Output data format.
CV_CAP_PROP_XI_OFFSET_X = 402, // Horizontal offset from the origin to the area of interest (in pixels).
CV_CAP_PROP_XI_OFFSET_Y = 403, // Vertical offset from the origin to the area of interest (in pixels).
CV_CAP_PROP_XI_TRG_SOURCE = 404, // Defines source of trigger.
CV_CAP_PROP_XI_TRG_SOFTWARE = 405, // Generates an internal trigger. PRM_TRG_SOURCE must be set to TRG_SOFTWARE.
CV_CAP_PROP_XI_GPI_SELECTOR = 406, // Selects general purpose input
CV_CAP_PROP_XI_GPI_MODE = 407, // Set general purpose input mode
CV_CAP_PROP_XI_GPI_LEVEL = 408, // Get general purpose level
CV_CAP_PROP_XI_GPO_SELECTOR = 409, // Selects general purpose output
CV_CAP_PROP_XI_GPO_MODE = 410, // Set general purpose output mode
CV_CAP_PROP_XI_LED_SELECTOR = 411, // Selects camera signalling LED
CV_CAP_PROP_XI_LED_MODE = 412, // Define camera signalling LED functionality
CV_CAP_PROP_XI_MANUAL_WB = 413, // Calculates White Balance(must be called during acquisition)
CV_CAP_PROP_XI_AUTO_WB = 414, // Automatic white balance
CV_CAP_PROP_XI_AEAG = 415, // Automatic exposure/gain
CV_CAP_PROP_XI_EXP_PRIORITY = 416, // Exposure priority (0.5 - exposure 50%, gain 50%).
CV_CAP_PROP_XI_AE_MAX_LIMIT = 417, // Maximum limit of exposure in AEAG procedure
CV_CAP_PROP_XI_AG_MAX_LIMIT = 418, // Maximum limit of gain in AEAG procedure
CV_CAP_PROP_XI_AEAG_LEVEL = 419, // Average intensity of output signal AEAG should achieve(in %)
CV_CAP_PROP_XI_TIMEOUT = 420, // Image capture timeout in milliseconds
CV_CAP_PROP_XI_EXPOSURE = 421, // Exposure time in microseconds
CV_CAP_PROP_XI_EXPOSURE_BURST_COUNT = 422, // Sets the number of times of exposure in one frame.
CV_CAP_PROP_XI_GAIN_SELECTOR = 423, // Gain selector for parameter Gain allows to select different type of gains.
CV_CAP_PROP_XI_GAIN = 424, // Gain in dB
CV_CAP_PROP_XI_DOWNSAMPLING_TYPE = 426, // Change image downsampling type.
CV_CAP_PROP_XI_BINNING_SELECTOR = 427, // Binning engine selector.
CV_CAP_PROP_XI_BINNING_VERTICAL = 428, // Vertical Binning - number of vertical photo-sensitive cells to combine together.
CV_CAP_PROP_XI_BINNING_HORIZONTAL = 429, // Horizontal Binning - number of horizontal photo-sensitive cells to combine together.
CV_CAP_PROP_XI_BINNING_PATTERN = 430, // Binning pattern type.
CV_CAP_PROP_XI_DECIMATION_SELECTOR = 431, // Decimation engine selector.
CV_CAP_PROP_XI_DECIMATION_VERTICAL = 432, // Vertical Decimation - vertical sub-sampling of the image - reduces the vertical resolution of the image by the specified vertical decimation factor.
CV_CAP_PROP_XI_DECIMATION_HORIZONTAL = 433, // Horizontal Decimation - horizontal sub-sampling of the image - reduces the horizontal resolution of the image by the specified vertical decimation factor.
CV_CAP_PROP_XI_DECIMATION_PATTERN = 434, // Decimation pattern type.
CV_CAP_PROP_XI_IMAGE_DATA_FORMAT = 435, // Output data format.
CV_CAP_PROP_XI_SHUTTER_TYPE = 436, // Change sensor shutter type(CMOS sensor).
CV_CAP_PROP_XI_SENSOR_TAPS = 437, // Number of taps
CV_CAP_PROP_XI_AEAG_ROI_OFFSET_X = 439, // Automatic exposure/gain ROI offset X
CV_CAP_PROP_XI_AEAG_ROI_OFFSET_Y = 440, // Automatic exposure/gain ROI offset Y
CV_CAP_PROP_XI_AEAG_ROI_WIDTH = 441, // Automatic exposure/gain ROI Width
CV_CAP_PROP_XI_AEAG_ROI_HEIGHT = 442, // Automatic exposure/gain ROI Height
CV_CAP_PROP_XI_BPC = 445, // Correction of bad pixels
CV_CAP_PROP_XI_WB_KR = 448, // White balance red coefficient
CV_CAP_PROP_XI_WB_KG = 449, // White balance green coefficient
CV_CAP_PROP_XI_WB_KB = 450, // White balance blue coefficient
CV_CAP_PROP_XI_WIDTH = 451, // Width of the Image provided by the device (in pixels).
CV_CAP_PROP_XI_HEIGHT = 452, // Height of the Image provided by the device (in pixels).
CV_CAP_PROP_XI_LIMIT_BANDWIDTH = 459, // Set/get bandwidth(datarate)(in Megabits)
CV_CAP_PROP_XI_SENSOR_DATA_BIT_DEPTH = 460, // Sensor output data bit depth.
CV_CAP_PROP_XI_OUTPUT_DATA_BIT_DEPTH = 461, // Device output data bit depth.
CV_CAP_PROP_XI_IMAGE_DATA_BIT_DEPTH = 462, // bitdepth of data returned by function xiGetImage
CV_CAP_PROP_XI_OUTPUT_DATA_PACKING = 463, // Device output data packing (or grouping) enabled. Packing could be enabled if output_data_bit_depth > 8 and packing capability is available.
CV_CAP_PROP_XI_OUTPUT_DATA_PACKING_TYPE = 464, // Data packing type. Some cameras supports only specific packing type.
CV_CAP_PROP_XI_IS_COOLED = 465, // Returns 1 for cameras that support cooling.
CV_CAP_PROP_XI_COOLING = 466, // Start camera cooling.
CV_CAP_PROP_XI_TARGET_TEMP = 467, // Set sensor target temperature for cooling.
CV_CAP_PROP_XI_CHIP_TEMP = 468, // Camera sensor temperature
CV_CAP_PROP_XI_HOUS_TEMP = 469, // Camera housing tepmerature
CV_CAP_PROP_XI_CMS = 470, // Mode of color management system.
CV_CAP_PROP_XI_APPLY_CMS = 471, // Enable applying of CMS profiles to xiGetImage (see XI_PRM_INPUT_CMS_PROFILE, XI_PRM_OUTPUT_CMS_PROFILE).
CV_CAP_PROP_XI_IMAGE_IS_COLOR = 474, // Returns 1 for color cameras.
CV_CAP_PROP_XI_COLOR_FILTER_ARRAY = 475, // Returns color filter array type of RAW data.
CV_CAP_PROP_XI_GAMMAY = 476, // Luminosity gamma
CV_CAP_PROP_XI_GAMMAC = 477, // Chromaticity gamma
CV_CAP_PROP_XI_SHARPNESS = 478, // Sharpness Strenght
CV_CAP_PROP_XI_CC_MATRIX_00 = 479, // Color Correction Matrix element [0][0]
CV_CAP_PROP_XI_CC_MATRIX_01 = 480, // Color Correction Matrix element [0][1]
CV_CAP_PROP_XI_CC_MATRIX_02 = 481, // Color Correction Matrix element [0][2]
CV_CAP_PROP_XI_CC_MATRIX_03 = 482, // Color Correction Matrix element [0][3]
CV_CAP_PROP_XI_CC_MATRIX_10 = 483, // Color Correction Matrix element [1][0]
CV_CAP_PROP_XI_CC_MATRIX_11 = 484, // Color Correction Matrix element [1][1]
CV_CAP_PROP_XI_CC_MATRIX_12 = 485, // Color Correction Matrix element [1][2]
CV_CAP_PROP_XI_CC_MATRIX_13 = 486, // Color Correction Matrix element [1][3]
CV_CAP_PROP_XI_CC_MATRIX_20 = 487, // Color Correction Matrix element [2][0]
CV_CAP_PROP_XI_CC_MATRIX_21 = 488, // Color Correction Matrix element [2][1]
CV_CAP_PROP_XI_CC_MATRIX_22 = 489, // Color Correction Matrix element [2][2]
CV_CAP_PROP_XI_CC_MATRIX_23 = 490, // Color Correction Matrix element [2][3]
CV_CAP_PROP_XI_CC_MATRIX_30 = 491, // Color Correction Matrix element [3][0]
CV_CAP_PROP_XI_CC_MATRIX_31 = 492, // Color Correction Matrix element [3][1]
CV_CAP_PROP_XI_CC_MATRIX_32 = 493, // Color Correction Matrix element [3][2]
CV_CAP_PROP_XI_CC_MATRIX_33 = 494, // Color Correction Matrix element [3][3]
CV_CAP_PROP_XI_DEFAULT_CC_MATRIX = 495, // Set default Color Correction Matrix
CV_CAP_PROP_XI_TRG_SELECTOR = 498, // Selects the type of trigger.
CV_CAP_PROP_XI_ACQ_FRAME_BURST_COUNT = 499, // Sets number of frames acquired by burst. This burst is used only if trigger is set to FrameBurstStart
CV_CAP_PROP_XI_DEBOUNCE_EN = 507, // Enable/Disable debounce to selected GPI
CV_CAP_PROP_XI_DEBOUNCE_T0 = 508, // Debounce time (x * 10us)
CV_CAP_PROP_XI_DEBOUNCE_T1 = 509, // Debounce time (x * 10us)
CV_CAP_PROP_XI_DEBOUNCE_POL = 510, // Debounce polarity (pol = 1 t0 - falling edge, t1 - rising edge)
CV_CAP_PROP_XI_LENS_MODE = 511, // Status of lens control interface. This shall be set to XI_ON before any Lens operations.
CV_CAP_PROP_XI_LENS_APERTURE_VALUE = 512, // Current lens aperture value in stops. Examples: 2.8, 4, 5.6, 8, 11
CV_CAP_PROP_XI_LENS_FOCUS_MOVEMENT_VALUE = 513, // Lens current focus movement value to be used by XI_PRM_LENS_FOCUS_MOVE in motor steps.
CV_CAP_PROP_XI_LENS_FOCUS_MOVE = 514, // Moves lens focus motor by steps set in XI_PRM_LENS_FOCUS_MOVEMENT_VALUE.
CV_CAP_PROP_XI_LENS_FOCUS_DISTANCE = 515, // Lens focus distance in cm.
CV_CAP_PROP_XI_LENS_FOCAL_LENGTH = 516, // Lens focal distance in mm.
CV_CAP_PROP_XI_LENS_FEATURE_SELECTOR = 517, // Selects the current feature which is accessible by XI_PRM_LENS_FEATURE.
CV_CAP_PROP_XI_LENS_FEATURE = 518, // Allows access to lens feature value currently selected by XI_PRM_LENS_FEATURE_SELECTOR.
CV_CAP_PROP_XI_DEVICE_MODEL_ID = 521, // Return device model id
CV_CAP_PROP_XI_DEVICE_SN = 522, // Return device serial number
CV_CAP_PROP_XI_IMAGE_DATA_FORMAT_RGB32_ALPHA = 529, // The alpha channel of RGB32 output image format.
CV_CAP_PROP_XI_IMAGE_PAYLOAD_SIZE = 530, // Buffer size in bytes sufficient for output image returned by xiGetImage
CV_CAP_PROP_XI_TRANSPORT_PIXEL_FORMAT = 531, // Current format of pixels on transport layer.
CV_CAP_PROP_XI_SENSOR_CLOCK_FREQ_HZ = 532, // Sensor clock frequency in Hz.
CV_CAP_PROP_XI_SENSOR_CLOCK_FREQ_INDEX = 533, // Sensor clock frequency index. Sensor with selected frequencies have possibility to set the frequency only by this index.
CV_CAP_PROP_XI_SENSOR_OUTPUT_CHANNEL_COUNT = 534, // Number of output channels from sensor used for data transfer.
CV_CAP_PROP_XI_FRAMERATE = 535, // Define framerate in Hz
CV_CAP_PROP_XI_COUNTER_SELECTOR = 536, // Select counter
CV_CAP_PROP_XI_COUNTER_VALUE = 537, // Counter status
CV_CAP_PROP_XI_ACQ_TIMING_MODE = 538, // Type of sensor frames timing.
CV_CAP_PROP_XI_AVAILABLE_BANDWIDTH = 539, // Calculate and return available interface bandwidth(int Megabits)
CV_CAP_PROP_XI_BUFFER_POLICY = 540, // Data move policy
CV_CAP_PROP_XI_LUT_EN = 541, // Activates LUT.
CV_CAP_PROP_XI_LUT_INDEX = 542, // Control the index (offset) of the coefficient to access in the LUT.
CV_CAP_PROP_XI_LUT_VALUE = 543, // Value at entry LUTIndex of the LUT
CV_CAP_PROP_XI_TRG_DELAY = 544, // Specifies the delay in microseconds (us) to apply after the trigger reception before activating it.
CV_CAP_PROP_XI_TS_RST_MODE = 545, // Defines how time stamp reset engine will be armed
CV_CAP_PROP_XI_TS_RST_SOURCE = 546, // Defines which source will be used for timestamp reset. Writing this parameter will trigger settings of engine (arming)
CV_CAP_PROP_XI_IS_DEVICE_EXIST = 547, // Returns 1 if camera connected and works properly.
CV_CAP_PROP_XI_ACQ_BUFFER_SIZE = 548, // Acquisition buffer size in buffer_size_unit. Default bytes.
CV_CAP_PROP_XI_ACQ_BUFFER_SIZE_UNIT = 549, // Acquisition buffer size unit in bytes. Default 1. E.g. Value 1024 means that buffer_size is in KiBytes
CV_CAP_PROP_XI_ACQ_TRANSPORT_BUFFER_SIZE = 550, // Acquisition transport buffer size in bytes
CV_CAP_PROP_XI_BUFFERS_QUEUE_SIZE = 551, // Queue of field/frame buffers
CV_CAP_PROP_XI_ACQ_TRANSPORT_BUFFER_COMMIT = 552, // Number of buffers to commit to low level
CV_CAP_PROP_XI_RECENT_FRAME = 553, // GetImage returns most recent frame
CV_CAP_PROP_XI_DEVICE_RESET = 554, // Resets the camera to default state.
CV_CAP_PROP_XI_COLUMN_FPN_CORRECTION = 555, // Correction of column FPN
CV_CAP_PROP_XI_SENSOR_MODE = 558, // Current sensor mode. Allows to select sensor mode by one integer. Setting of this parameter affects: image dimensions and downsampling.
CV_CAP_PROP_XI_HDR = 559, // Enable High Dynamic Range feature.
CV_CAP_PROP_XI_HDR_KNEEPOINT_COUNT = 560, // The number of kneepoints in the PWLR.
CV_CAP_PROP_XI_HDR_T1 = 561, // position of first kneepoint(in % of XI_PRM_EXPOSURE)
CV_CAP_PROP_XI_HDR_T2 = 562, // position of second kneepoint (in % of XI_PRM_EXPOSURE)
CV_CAP_PROP_XI_KNEEPOINT1 = 563, // value of first kneepoint (% of sensor saturation)
CV_CAP_PROP_XI_KNEEPOINT2 = 564, // value of second kneepoint (% of sensor saturation)
CV_CAP_PROP_XI_IMAGE_BLACK_LEVEL = 565, // Last image black level counts. Can be used for Offline processing to recall it.
CV_CAP_PROP_XI_HW_REVISION = 571, // Returns hardware revision number.
CV_CAP_PROP_XI_DEBUG_LEVEL = 572, // Set debug level
CV_CAP_PROP_XI_AUTO_BANDWIDTH_CALCULATION = 573, // Automatic bandwidth calculation,
CV_CAP_PROP_XI_FREE_FFS_SIZE = 581, // Size of free camera FFS.
CV_CAP_PROP_XI_USED_FFS_SIZE = 582, // Size of used camera FFS.
CV_CAP_PROP_XI_FFS_ACCESS_KEY = 583, // Setting of key enables file operations on some cameras.
CV_CAP_PROP_XI_SENSOR_FEATURE_SELECTOR = 585, // Selects the current feature which is accessible by XI_PRM_SENSOR_FEATURE_VALUE.
CV_CAP_PROP_XI_SENSOR_FEATURE_VALUE = 586, // Allows access to sensor feature value currently selected by XI_PRM_SENSOR_FEATURE_SELECTOR.
// Properties for Android cameras
CV_CAP_PROP_ANDROID_FLASH_MODE = 8001,
CV_CAP_PROP_ANDROID_FOCUS_MODE = 8002,
CV_CAP_PROP_ANDROID_WHITE_BALANCE = 8003,
CV_CAP_PROP_ANDROID_ANTIBANDING = 8004,
CV_CAP_PROP_ANDROID_FOCAL_LENGTH = 8005,
CV_CAP_PROP_ANDROID_FOCUS_DISTANCE_NEAR = 8006,
CV_CAP_PROP_ANDROID_FOCUS_DISTANCE_OPTIMAL = 8007,
CV_CAP_PROP_ANDROID_FOCUS_DISTANCE_FAR = 8008,
CV_CAP_PROP_ANDROID_EXPOSE_LOCK = 8009,
CV_CAP_PROP_ANDROID_WHITEBALANCE_LOCK = 8010,
// Properties of cameras available through AVFOUNDATION interface
CV_CAP_PROP_IOS_DEVICE_FOCUS = 9001,
CV_CAP_PROP_IOS_DEVICE_EXPOSURE = 9002,
CV_CAP_PROP_IOS_DEVICE_FLASH = 9003,
CV_CAP_PROP_IOS_DEVICE_WHITEBALANCE = 9004,
CV_CAP_PROP_IOS_DEVICE_TORCH = 9005,
// Properties of cameras available through Smartek Giganetix Ethernet Vision interface
/* --- Vladimir Litvinenko (litvinenko.vladimir@gmail.com) --- */
CV_CAP_PROP_GIGA_FRAME_OFFSET_X = 10001,
CV_CAP_PROP_GIGA_FRAME_OFFSET_Y = 10002,
CV_CAP_PROP_GIGA_FRAME_WIDTH_MAX = 10003,
CV_CAP_PROP_GIGA_FRAME_HEIGH_MAX = 10004,
CV_CAP_PROP_GIGA_FRAME_SENS_WIDTH = 10005,
CV_CAP_PROP_GIGA_FRAME_SENS_HEIGH = 10006,
CV_CAP_PROP_INTELPERC_PROFILE_COUNT = 11001,
CV_CAP_PROP_INTELPERC_PROFILE_IDX = 11002,
CV_CAP_PROP_INTELPERC_DEPTH_LOW_CONFIDENCE_VALUE = 11003,
CV_CAP_PROP_INTELPERC_DEPTH_SATURATION_VALUE = 11004,
CV_CAP_PROP_INTELPERC_DEPTH_CONFIDENCE_THRESHOLD = 11005,
CV_CAP_PROP_INTELPERC_DEPTH_FOCAL_LENGTH_HORZ = 11006,
CV_CAP_PROP_INTELPERC_DEPTH_FOCAL_LENGTH_VERT = 11007,
// Intel PerC streams
CV_CAP_INTELPERC_DEPTH_GENERATOR = 1 << 29,
CV_CAP_INTELPERC_IMAGE_GENERATOR = 1 << 28,
CV_CAP_INTELPERC_GENERATORS_MASK = CV_CAP_INTELPERC_DEPTH_GENERATOR + CV_CAP_INTELPERC_IMAGE_GENERATOR
写视频
//保存视频文件
/* initialize video file writer */
CVAPI(CvVideoWriter*) cvCreateVideoWriter( const char* filename, //文件名
int fourcc,
double fps,
CvSize frame_size,
int is_color CV_DEFAULT(1));
//写入每一帧
/* write frame to video file */
CVAPI(int) cvWriteFrame( CvVideoWriter* writer, //视频写入结构
const IplImage* image );//图像IplImage*
//释放空间和结构
/* close video file writer */
CVAPI(void) cvReleaseVideoWriter( CvVideoWriter** writer );
示例代码如下:
#include <opencv2\opencv.hpp>
using namespace cv;
using namespace std;
//视频操作
int main(int argc,char** argv) {
//读取视频文件
//cvCreateFileCapture
VideoCapture cap(0);
namedWindow("video");
if (!cap.isOpened())
{
return -1;
}
while (waitKey(1)!='q'&&cap.isOpened())
{
Mat frame;
cap >> frame;
if (frame.empty()) {
cout << "Video over" << endl;
}
imshow("video", frame);
}
return 0;
}
5 converImage函数
//不同图像格式之间转换
/* utility function: convert one image to another with optional vertical flip */
CVAPI(void) cvConvertImage( const CvArr* src, //源图像 (8位单通道 或是3个通道)
CvArr* dst,//
int flags CV_DEFAULT(0));//可以垂直反转图像
