图像采集需要调用摄像头就行拍照操作，网上查了一下资料，需要引用以下3个dll。
看一下运行界面
界面都比较low，主要是功能实现。
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private void camera_load(object sender, eventargs e){this.btnsave.enabled = false;try{bordersize = getbordersize(this);captionheight = getcaptionheight(this);//initstudent("", "", "");this.combobox_sizemode.text = "填充(保持比例)";filterinfocollection infos = new filterinfocollection(filtercategory.videoinputdevice);if ((infos != null) && (infos.count > 0)){}else{messagebox.show("没有视频设备");}this.loadvedio();this.splitcontainer1.panel2minsize = 280;this.splitcontainer1.splitterdistance = this.splitcontainer1.width - this.splitcontainer1.panel2minsize + 1;mf = new borderform();mf.show(this);//mf.left = (this.left + this.splitcontainer1.panel1.width - mf.width) / 2;//mf.top = (this.top + this.splitcontainer1.panel1.height - mf.height) / 2;//marleft = mf.left - this.left;//martop = mf.top - this.top;rectangle rtpic = this.picturebox_camera.rectangletoscreen(this.picturebox_camera.clientrectangle);rectangle rtmf = this.mf.rectangletoscreen(this.mf.clientrectangle);if (rtpic == null || rtmf == null || rtpic.width == 0 || rtmf.width == 0){return;}mf.left = ((rtmf.width + rtmf.left) + (rtpic.width + rtpic.left)) / 2;mf.top = ((rtmf.height + rtmf.top) + (rtpic.height + rtpic.top)) / 2;mf.sizechanged += new eventhandler(mf_sizechanged);mf.locationchanged += new eventhandler(mf_locationchanged);picturebox_camera_sizechanged(sender, e);//启动连拍//this.shootonetime = 0;this.timer1.start();}catch (exception ex){messagebox.show(ex.message, "错误", messageboxbuttons.ok, messageboxicon.error);}} |
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//加载摄像头设备private void loadvedio(){filterinfocollection infos = new filterinfocollection(filtercategory.videoinputdevice);if ((infos != null) && (infos.count > 0)){int index = 0;foreach (filterinfo info in infos){this.cmbcapturedevice.items.add(new deviceinfo(info.name, info.monikerstring, index, filtercategory.videoinputdevice));index++;}this.cmbcapturedevice.selectedindex = 0;}} |
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/// <summary>/// 拍照/// </summary>private void shoot(){try{if (this.picturebox_camera.image != null && (int)this.numericupdown1.value > 0 && (int)this.numericupdown2.value > 0){bitmap resultimage = new bitmap((int)this.numericupdown1.value, (int)this.numericupdown2.value);graphics g = graphics.fromimage(resultimage);g.copyfromscreen(new point(this.mf.location.x + 1, this.mf.location.y + 1), new point(6, 6 + (iswin7 ? 2 : 0)), new size(resultimage.size.width, resultimage.size.height - (6 + (iswin7 ? 2 : 0))));if (!string.isnullorempty(xh)){string str = "";if (this.xh != ""){str = this.xh;}else if (this.sfzh != ""){str = this.sfzh;}else if (this.ksh != ""){str = this.ksh;}if (this.checkbox2.checked){str = xm + " " + str;}int txtwidth = (int)(g.measurestring(str, new font("宋体", 9)).width * 1.1);rectangle rec = new rectangle((resultimage.width - txtwidth) / 2, resultimage.height - 16, txtwidth, 15);g.fillrectangle(brushes.white, rec);stringformat sf = new stringformat();sf.linealignment = stringalignment.center;sf.alignment = stringalignment.center;rec.height++;g.drawstring(str, new font("宋体", 9), brushes.black, rec, sf);}this.picturebox_tx.image = resultimage;}else{this.picturebox_tx.image = null;}}catch (exception ex){messagebox.show(ex.message, "", messageboxbuttons.ok, messageboxicon.error);}} |
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//选择摄像装置private void cmbcapturedevice_selectedindexchanged(object sender, eventargs e){if (this.cmbcapturedevice.selecteditem != null){this.cmbdevicecapability.items.clear();videocapturedevice device = new videocapturedevice(((deviceinfo)this.cmbcapturedevice.selecteditem).monikerstring);for (int i = 0; i < device.videocapabilities.length; i++){videocapabilities capabilities = device.videocapabilities[i];devicecapabilityinfo item = new devicecapabilityinfo(capabilities.framesize);this.cmbdevicecapability.items.add(item);}deviceinfo selecteditem = (deviceinfo)this.cmbcapturedevice.selecteditem;if (this.captureaforge != null){this.captureaforge.newframe -= new newframeeventhandler(this.captureaforge_newframe);//this.captureaforge.snapshotframe -= new newframeeventhandler(this.captureaforge_snapshotframe);if (this.captureaforge.isrunning){this.captureaforge.signaltostop();}this.captureaforge.waitforstop();this.captureaforge = null;}this.captureaforge = new videocapturedevice(selecteditem.monikerstring);this.captureaforge.providesnapshots = true;this.captureaforge.newframe += new newframeeventhandler(this.captureaforge_newframe);//this.captureaforge.snapshotframe += new newframeeventhandler(this.captureaforge_snapshotframe);if (this.cmbdevicecapability.items.count > 0){this.cmbdevicecapability.selectedindex = 0;}}} |
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//选择分辨率private void cmbdevicecapability_selectedindexchanged(object sender, eventargs e){string[] strarray = this.cmbdevicecapability.text.trim().split(new char[] { 'x' });int width = int.parse(strarray[0]);int height = int.parse(strarray[1]);if (this.captureaforge != null){if (this.captureaforge.isrunning){this.captureaforge.signaltostop();}this.captureaforge.waitforstop();this.captureaforge.desiredframesize = new size(width, height);this.captureaforge.desiredsnapshotsize = new size(width, height);//this.captureaforge.desiredframerate = 1000;this.captureaforge.start();}} |
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//设置数据源大小 private void combobox_sizemode_selectedindexchanged(object sender, eventargs e){switch (this.combobox_sizemode.text){case "默认(原始大小)":this.picturebox_camera.sizemode = pictureboxsizemode.normal;break;case "居中(原始大小)":this.picturebox_camera.sizemode = pictureboxsizemode.centerimage;break;case "填充(拉伸图像)":this.picturebox_camera.sizemode = pictureboxsizemode.stretchimage;break;case "填充(保持比例)":this.picturebox_camera.sizemode = pictureboxsizemode.zoom;break;}} |
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//保存照片private void buttonsave_click(object sender, eventargs e){try{string filename = path.combine(application.startuppath, "stuimages", "newstuimages", this.xh + ".jpg");if (!this.checkbox1.checked && file.exists(filename)){if (messagebox.show("该生已经有照片文件，是否覆盖? ", "", messageboxbuttons.okcancel, messageboxicon.warning) == dialogresult.ok){//存储到本地this.picturebox_tx.image.save(filename);//ondatachanged(this, new dataeventargs(string.format("头像采集(覆盖)，学号：{0}，姓名：{1}，考生号：{2}，身份证号：{3}", this.xh, this.xm, this.ksh, this.sfzh)));this.txtksh.focus();this.txtksh.selectall();}else{return;}}else{this.picturebox_tx.image.save(filename);//ondatachanged(this, new dataeventargs(string.format("头像采集，学号：{0}，姓名：{1}，考生号：{2}，身份证号：{3}", this.xh, this.xm, this.ksh, this.sfzh)));this.txtksh.focus();this.txtksh.selectall();}this.timer1.start();}catch{}finally{//启用下面一行,点击保存后头像会立即启动刷新//this.timer1.start();this.btnsave.enabled = false;}} |
保存照片可以选择自动覆盖同名照片或者在照片中加入水印效果。
操作时候可以自行拖动长方形的框进行选择拍照
以上所述是小编给大家介绍的c#实现手机拍照并且保存水印照片，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
原文链接：http://www.cnblogs.com/luoxiaozhao/archive/2016/11/11/6054464.html
