Required nodes in addition to standard nodes (I use the latest current versions):
- node-red-contrib-image-tools
- node-red-contrib-telegrambot
- node-red-contrib-tfjs-coco-ssd
- node-red-dashboard
- node-red-node-base64
[{"id":"70f9130a.1f5c0c","type":"base64","z":"2d489fd9.1eedd","name":"","action":"str","property":"image","x":880,"y":530,"wires":[["af833380.f5ea9"]]},{"id":"420b8a89.423b94","type":"http request","z":"2d489fd9.1eedd","name":"","method":"GET","ret":"bin","paytoqs":false,"url":"https://loremflickr.com/320/240/sport","tls":"","persist":false,"proxy":"","authType":"","x":410,"y":430,"wires":[["62e85150.02f7b"]]},{"id":"77fd828a.a6073c","type":"ui_button","z":"2d489fd9.1eedd","name":"","group":"92518872.4d2bc8","order":3,"width":2,"height":1,"passthru":true,"label":"New Picture","tooltip":"","color":"","bgcolor":"","icon":"","payload":"","payloadType":"str","topic":"","x":260,"y":430,"wires":[["420b8a89.423b94"]]},{"id":"18eefa5b.18e276","type":"comment","z":"2d489fd9.1eedd","name":"========== ========== TFJS COCO SSD ========== ==========","info":"\n ","x":340,"y":490,"wires":[]},{"id":"7c8df2eb.c7408c","type":"inject","z":"2d489fd9.1eedd","name":"test","topic":"","payload":"","payloadType":"date","repeat":"","crontab":"","once":false,"onceDelay":0.1,"x":130,"y":430,"wires":[["77fd828a.a6073c"]]},{"id":"d0f460b0.4bdfd","type":"change","z":"2d489fd9.1eedd","name":"pay to detect","rules":[{"t":"move","p":"payload","pt":"msg","to":"detect","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":440,"y":530,"wires":[["d6827244.41d64","7a793272.3245fc"]]},{"id":"506351f8.e4c8","type":"link in","z":"2d489fd9.1eedd","name":"coco","links":["23ae07fd.88e498","c710c20f.8d8cb","ed0b6b69.870e78","3d40617c.70e06e"],"x":195,"y":530,"wires":[["e75695c9.dca4e8"]]},{"id":"3d40617c.70e06e","type":"link out","z":"2d489fd9.1eedd","name":"","links":["506351f8.e4c8"],"x":715,"y":430,"wires":[]},{"id":"3ef708a8.692668","type":"comment","z":"2d489fd9.1eedd","name":"coco","info":"","x":130,"y":530,"wires":[]},{"id":"e75695c9.dca4e8","type":"tensorflowCoco","z":"2d489fd9.1eedd","name":"","scoreThreshold":"","passthru":true,"x":290,"y":530,"wires":[["d0f460b0.4bdfd"]]},{"id":"d6827244.41d64","type":"function","z":"2d489fd9.1eedd","name":"Map Objects Boxes get.Picture","func":"//========== retrieves and transmits the image ==========\n//var pictureBuffer = flow.get('pictureBuffer')|| [];\n//msg.pictureBuffer = pictureBuffer; // send the picture\n\n//========== Detect Empty Objects ==========\nif(empty(msg.classes)){\nmsg.payload = \"no object detected\" //prepare for the google translate\nmsg.class=\"no object detected\" //prepare for display in Template Dashboard\nmsg.detect=[] //\nreturn msg\n} //no found object \nelse {\n// prepare the color and the thickness of the line in fct of the image size\nmsg.boxcolor = \"yellow\";\nmsg.textcolor = \"yellow\";\n \nif (msg.shape[1] < 300) {msg.textfontsize =\"10px\";msg.boxstroke =1;msg.textstroke = \"3px\";}\nelse if (msg.shape[1] >= 300 && msg.shape[1] < 500) {msg.textfontsize =\"15px\";msg.boxstroke =2;msg.textstroke = \"3px\";}\nelse if (msg.shape[1] >= 500 && msg.shape[1] < 900) {msg.textfontsize =\"20px\";msg.boxstroke =2;msg.textstroke = \"5px\";}\nelse if (msg.shape[1] >= 900 && msg.shape[1] < 2000){msg.textfontsize =\"50px\";msg.boxstroke =5;msg.textstroke = \"10px\";}\nelse if (msg.shape[1] >= 2000) {msg.textfontsize =\"80px\";msg.boxstroke =10;msg.textstroke = \"20px\";}\n\n//msg.textfontsize =(msg.shape[1] > 600) ? \"70px\" : \"10px\";\n//msg.boxstroke = (msg.shape[1] > 600) ? 5 : 2;\n//msg.textstroke = (msg.shape[1] > 600) ? \"10px\" : \"2px\";\n\n//========== indicates the type of objects and the quantity ==========\n// Get the array of names\nvar names = Object.keys(msg.classes);\nvar firstCount;\n\n// For each name, map it to \"n name\"\nvar parts = names.map((n,i) => {\n var count = msg.classes[n];\n if (i === 0) {\n //Remember the first count to get the \"is/are\" right later\n firstCount = count;\n }\n // Return \"n name\" and get the pluralisation right\n return count+\" \"+n+(count>1?\"s\":\"\")\n})\n// If there is more than one name, pop off the last one for later\nvar lastName;\nif (parts.length > 1) {\n lastName = parts.pop();\n}\n// Build up the response getting \"is/are\" right for the first count and joining\n// the array of names with a comma\nmsg.payload = \"There \"+(firstCount === 1 ? \"is\":\"are\")+\" \"+parts.join(\", \")\n// If there was a last name, add that on the end with an 'and', not a comma\nif (lastName) {\n msg.payload += \" and \"+lastName;\n}\nreturn msg;\n}//fin de si detecte\n\n//========== EMPTY FONCTION ==========\n/*\nHere's a simpler(short) solution to check for empty variables. \nThis function checks if a variable is empty. \nThe variable provided may contain mixed values (null, undefined, array, object, string, integer, function).\n*/\nfunction empty(mixed_var) {\n if (!mixed_var || mixed_var == '0') { return true; }\n if (typeof mixed_var == 'object') { \n for (var k in mixed_var) { return false; }\n return true; \n }\nreturn false;\n}//EMPTY FONCTION END\n","outputs":1,"noerr":0,"x":680,"y":530,"wires":[["70f9130a.1f5c0c"]]},{"id":"62e85150.02f7b","type":"change","z":"2d489fd9.1eedd","name":"","rules":[{"t":"set","p":"topic","pt":"msg","to":"testDetection","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":570,"y":430,"wires":[["3d40617c.70e06e"]]},{"id":"c241e6ec.94fda8","type":"comment","z":"2d489fd9.1eedd","name":"coco","info":"","x":780,"y":430,"wires":[]},{"id":"7defeef9.85baf","type":"comment","z":"2d489fd9.1eedd","name":"========== UPLOAD picture ==========","info":"new picture :320x240\n\n0: object\n bbox: array[4]\n 0: 127\n 1: 86\n 2: 29\n 3: 90\n class: \"person\"\n score: 0.9015087080001831\n \n x=127 y=86 width =29 height=90\n ","x":250,"y":380,"wires":[]},{"id":"af833380.f5ea9","type":"ui_template","z":"2d489fd9.1eedd","group":"92518872.4d2bc8","name":"D3 templatev3 TextStroke","order":1,"width":7,"height":5,"format":"<head>\n <style>\n :root {\n --boxcolor: {{msg.boxcolor}};\n --boxstroke: {{msg.boxstroke}};\n --textcolor: {{msg.textcolor}};\n --textfontsize: {{msg.textfontsize}};\n --textstroke: {{msg.textstroke}};\n }\n .imag {\n width: 100%;\n height: 100%;\n } \n #svgimage text {\n font-family: Arial;\n font-size: var(--textfontsize, 18px);\n fill : var(--textcolor, yellow);\n paint-order: stroke;\n stroke: black;/*#ffffff;*//*yellow;*/\n stroke-width: var(--textstroke, 3px);/*3px;*/\n font-weight: 600;\n }\n rect {\n fill: blue;\n fill-opacity: 0;\n stroke: var(--boxcolor, yellow);\n stroke-width: var(--boxstroke, 1);\n }\n #svgimage {\n /*background-color: #cccccc; Used if the image is unavailable */\n background-repeat: no-repeat;\n background-size: cover;\n }\n </style>\n</head>\n<body>\n <svg preserveAspectRatio=\"xMidYMid meet\" id=\"svgimage\" style=\"width:100%\" viewBox=\"0 0 {{msg.shape[1]}} {{msg.shape[0]}}\">\n <image class=\"imag\" href=\"data:image/jpg;base64,{{msg.image}}\"/>\n </svg>\n <!-- \n <svg preserveAspectRatio=\"xMidYMid meet\" id=\"svgimage\" style=\"width:100%\" viewBox=\"0 0 {{msg.shape[1]}} {{msg.shape[0]}}\">\n <image class=\"imag\" href=\"data:image/jpg;base64,{{msg.pictureBuffer}}\"/>\n </svg> \n \n -->\n <div>{{msg.payload}}</div>\n <script>\n (function (scope) {\n scope.$watch('msg', function (msg) {\n if (msg && msg.detect) {\n var svg = d3.select(\"#svgimage\");\n\n var box = svg.selectAll(\"rect\").data(msg.detect)\n .attr(\"x\", function (d) { return d.bbox[0]; })\n .attr(\"y\", function (d) { return d.bbox[1]; })\n .attr(\"width\", function (d) { return d.bbox[2]; })\n .attr(\"height\", function (d) { return d.bbox[3]; });\n box.enter()\n .append(\"rect\")\n .attr(\"x\", function (d) { return d.bbox[0]; })\n .attr(\"y\", function (d) { return d.bbox[1]; })\n .attr(\"width\", function (d) { return d.bbox[2]; })\n .attr(\"height\", function (d) { return d.bbox[3]; });\n box.exit().remove();\n \n var text = svg.selectAll(\"text\").data(msg.detect)\n .text(function (d) { return d.class; })\n .attr(\"x\", function (d) { return d.bbox[0]; })\n .attr(\"y\", function (d) { return 10 + d.bbox[1]; });\n text.enter()\n .append(\"text\")\n .text(function (d) { return d.class; })\n .attr(\"x\", function (d) { return d.bbox[0]; })\n .attr(\"y\", function (d) { return 10 + d.bbox[1]; });\n text.exit().remove();\n }\n });\n })(scope);\n </script>\n</body>","storeOutMessages":true,"fwdInMessages":true,"templateScope":"local","x":1060,"y":530,"wires":[["6620cc3f.200064"]]},{"id":"7a793272.3245fc","type":"link out","z":"2d489fd9.1eedd","name":"","links":["892922d6.71f3a","d4e37092.e9a51"],"x":565,"y":580,"wires":[]},{"id":"86e7511.53999b","type":"jimp-image","z":"2d489fd9.1eedd","name":"","data":"image","dataType":"msg","ret":"img","parameter1":"","parameter1Type":"msg","parameter2":"","parameter2Type":"msg","parameter3":"","parameter3Type":"msg","parameter4":"","parameter4Type":"msg","parameter5":"","parameter5Type":"msg","parameter6":"","parameter6Type":"msg","parameter7":"","parameter7Type":"msg","parameter8":"","parameter8Type":"msg","parameterCount":0,"jimpFunction":"none","selectedJimpFunction":{"name":"none","fn":"none","description":"Just loads the image.","parameters":[]},"x":980,"y":660,"wires":[["3797d0ec.4ce87"]]},{"id":"bdfde2a1.a7e7d","type":"ui_template","z":"2d489fd9.1eedd","group":"7b6a751b.c5eb9c","name":"Canvas Selector","order":5,"width":1,"height":1,"format":" <script>\n (function(scope) {\n scope.$watch('msg', function(msg) {\n if (msg) {\n // Do something when msg arrives\n let dataURL = document.querySelector(\"#canvasImage\").toDataURL('image/jpeg');\n scope.send({payload: dataURL, w: msg.w, h: msg.h});\n }\n });\n })(scope);\n </script>\n","storeOutMessages":false,"fwdInMessages":false,"templateScope":"local","x":290,"y":780,"wires":[["7643a96c.565538"]]},{"id":"7643a96c.565538","type":"switch","z":"2d489fd9.1eedd","name":"data:image","property":"payload","propertyType":"msg","rules":[{"t":"cont","v":"data:image","vt":"str"}],"checkall":"true","repair":false,"outputs":1,"x":290,"y":840,"wires":[["e60214af.6cc108"]]},{"id":"d4e37092.e9a51","type":"link in","z":"2d489fd9.1eedd","name":"","links":["7a793272.3245fc"],"x":115,"y":660,"wires":[["97bf55b7.ec4198"]]},{"id":"c06dcfae.24d1b","type":"ui_template","z":"2d489fd9.1eedd","group":"7b6a751b.c5eb9c","name":"Canvas Template","order":7,"width":1,"height":1,"format":"<body>\n<canvas id=\"canvasImage\" width=\"1280\" height=\"720\">\n Your browser does not support the canvas element.\n</canvas>\n\n<script>\n (function(scope) {\n scope.$watch('msg', function (msg) {\n if (msg) {\n // Do something when msg arrives\n function squares(canvasid, squarelist, myimag) {\n let canvas = document.querySelector(canvasid);\n // hide the canvas\n canvas.style.display=\"none\";\n canvas.width = msg.shape[1];\n canvas.height = msg.shape[0];\n let ctx = canvas.getContext('2d');\n ctx.scale(1, 1);\n let image = new Image;\n image.src = \"data:image/jpg;base64,\"+myimag;\n image.onload = function () {\n ctx.drawImage(image, 0, 0, msg.shape[1], msg.shape[0]);\n for (const square of squarelist) {\n ctx.lineWidth = 2;\n ctx.strokeStyle = 'yellow';\n ctx.strokeRect(square.bbox[0], square.bbox[1], square.bbox[2], square.bbox[3]);\n ctx.font = \"10px Arial\";\n ctx.fillStyle = 'yellow';\n let width = ctx.measureText(square.class).width;\n ctx.fillRect(square.bbox[0], square.bbox[1]+square.bbox[3], square.bbox[2], 12);\n ctx.fillStyle = 'red';\n ctx.fillText(square.class, square.bbox[0]+square.bbox[2]/2-width/2, square.bbox[1]+square.bbox[3]+8);\n }\n };\n }\n\n let canvasid1 = \"#canvasImage\";\n let detect = msg.detect;\n let imag1 = msg.image;\n scope.send({payload: detect});\n squares(canvasid1, detect, imag1);\n scope.send({payload: 'go', w: msg.shape[1], h: msg.shape[0]});\n }\n });\n})(scope);\n</script>\n\n</body>","storeOutMessages":false,"fwdInMessages":false,"templateScope":"local","x":290,"y":720,"wires":[["bdfde2a1.a7e7d"]]},{"id":"97bf55b7.ec4198","type":"base64","z":"2d489fd9.1eedd","name":"","action":"str","property":"image","x":290,"y":660,"wires":[["c06dcfae.24d1b","c445e6a1.625ed8"]]},{"id":"892922d6.71f3a","type":"link in","z":"2d489fd9.1eedd","name":"","links":["7a793272.3245fc"],"x":825,"y":660,"wires":[["86e7511.53999b"]]},{"id":"b5d5d39e.401d9","type":"mqtt in","z":"2d489fd9.1eedd","name":"","topic":"imagetf","qos":"2","datatype":"auto","broker":"2a019090.5ba4d","x":490,"y":380,"wires":[["2dd4729f.4e239e"]]},{"id":"2dd4729f.4e239e","type":"switch","z":"2d489fd9.1eedd","name":"","property":"payload","propertyType":"msg","rules":[{"t":"istype","v":"buffer","vt":"buffer"}],"checkall":"true","repair":false,"outputs":1,"x":600,"y":380,"wires":[["3d40617c.70e06e"]]},{"id":"e60214af.6cc108","type":"ui_template","z":"2d489fd9.1eedd","group":"7b6a751b.c5eb9c","name":"SVG Template","order":2,"width":12,"height":9,"format":"<head>\n<style>\n .imag {\n width: 100%;\n height: 100%;\n } \n</style>\n</head>\n<body>\n <svg preserveAspectRatio=\"xMidYMid meet\" id=\"svgimage\" style=\"width:100%\" viewBox=\"0 0 {{msg.w}} {{msg.h}}\">\n <image class=\"imag\" href=\"{{msg.payload}}\"/>\n </svg>\n<script>\n(function(scope) {\n scope.$watch('msg', function(msg) {\n if (msg) {\n // Do something when msg arrives\n //scope.send({payload: dataURL});\n //alert(msg.w);\n }\n });\n})(scope);\n</script>\n</body>\n","storeOutMessages":true,"fwdInMessages":true,"templateScope":"local","x":290,"y":900,"wires":[["7aac40f.94f5bc"]]},{"id":"3797d0ec.4ce87","type":"function","z":"2d489fd9.1eedd","name":"draw Rects","func":"const LINE_WIDTH = 2;\nconst LINE_COLOR = 0xED143DFF;\n\nvar jimpImage = msg.payload;\nlet imgW = jimpImage.bitmap.width;\nlet imgH = jimpImage.bitmap.height;\n\n//create clamping functions to avoid printing outside of image\nlet clampX = (val) => clamp(val,0,imgW);\nlet clampY = (val) => clamp(val,0,imgH);\n\n//add imgBatchOps to msg for drawing text in next node \nmsg.imgBatchOps = [];\n\n\nif (msg.detect.length>0) {\n drawBoxes(jimpImage, msg.detect);\n}\n\nfunction drawBox(img, box) {\n //get box ccords\n let x = box.bbox[0];\n let y = box.bbox[1];\n let w = box.bbox[2];\n let h = box.bbox[3];\n \n scanHLine(img, x, y+h-14, w, 14, 0xfa758e22); //draw box for text\n scanRectangle(img, x, y, w, h, LINE_WIDTH, LINE_COLOR);//draw outer rect\n \n //built batch operations for next image node to draw text\n msg.imgBatchOps.push( \n {\n \"name\": \"print\",\n \"parameters\": [\n \"FONT_SANS_10_BLACK\",\n clampX(x+2),\n clampY(y+h-16),\n box.class\n ]\n }\n \n ); \n}\n\nfunction drawBoxes(img, detections) {\n detections.forEach(element => drawBox(img, element))\n}\n\n\nfunction makeColorIterator(color) {\n return function (x, y, offset) {\n this.bitmap.data.writeUInt32BE(color, offset, true);\n }\n}\n\nfunction scanRectangle(image,x,y,w,h,linePX,color){\n let iterator = makeColorIterator(color);\n \n let xw, yh;\n x = clampX(x-(linePX/2));\n y = clampY(y-(linePX/2));\n w = clampX(w);\n h = clampY(h);\n xw = clampX(x+w);\n yh = clampY(y+h);\n\n \n if(y+linePX <= imgH){\n image.scan(x, y, w, linePX, iterator);// scan linePX height line - TOP\n }\n if(yh+linePX <= imgH){\n image.scan(x, yh, w, linePX, iterator);// scan linePX height line - BOTTOM\n }\n if(x+linePX <= imgW){\n image.scan(x, y, linePX, h, iterator);// scan linePX width line - LEFT\n }\n if(xw+linePX <= imgW){\n image.scan(xw, y, linePX, h, iterator);// scan linePX width line - RIGHT\n }\n \n}\n\n\nfunction scanHLine(image,x,y,length,linePX,color){\n let iterator = makeColorIterator(color);\n x = clampX(x);\n y = clampY(y);\n length = clampX(length);\n if(y+linePX <= imgH){\n image.scan(x, y, length, linePX, iterator);// \n }\n}\n\nfunction scanVLine(image,x,y,height,linePX,color){\n let iterator = makeColorIterator(color);\n x = clampX(x);\n y = clampY(y);\n height = clampY(y+height);\n if(x+linePX <= imgW){\n image.scan(x, y, linePX, height, iterator);// \n }\n}\n\n\n//scanCircle(jimpImage, 92, 170, 43, 0x000000FF);\n//scanCircle(jimpImage, 92, 170, 42, 0xFFCC00FF);\n\nfunction clamp(value, min, max) {\n return Math.min(Math.max(value, min), max);\n}\n\nfunction scanCircle(image, x, y, radius, color) {\n let iterator = makeColorIterator(color);\n return image.scan(x - radius, y - radius, radius*2, radius*2, function (pixX, pixY, idx) {\n if (Math.pow(pixX - x, 2) + Math.pow(pixY - y, 2) < radius*radius) {\n iterator.call(this, pixX, pixY, idx);\n }\n });\n}\n\n \n\nreturn msg;","outputs":1,"noerr":0,"x":980,"y":720,"wires":[["caf53b8c.5f6138"]]},{"id":"caf53b8c.5f6138","type":"jimp-image","z":"2d489fd9.1eedd","name":"add text","data":"payload","dataType":"msg","ret":"img","parameter1":"imgBatchOps","parameter1Type":"msg","parameter2":"","parameter2Type":"msg","parameter3":"","parameter3Type":"msg","parameter4":"","parameter4Type":"msg","parameter5":"","parameter5Type":"msg","parameter6":"","parameter6Type":"msg","parameter7":"","parameter7Type":"msg","parameter8":"","parameter8Type":"msg","parameterCount":1,"jimpFunction":"batch","selectedJimpFunction":{"name":"batch","fn":"batch","description":"apply one or more functions","parameters":[{"name":"options","type":"json","required":true,"hint":"an object or an array of objects containing {\"name\" : \"function_name\", \"parameters\" : [x,y,z]}. 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As example, these images are handled excellent by the coco ssd analyze. Some other analyzers I have tested had problems detecting me walking there. The camera is looking down from the roof so no real frontal views that should have been ideal
).
)
