25:["$","title",null,{"children":"Text Patches | Luis Retondaro | Observable"}] 4b:Tf69,function textPatches (img, maxWhiteSpace, maxFontLineWidth, minTextWidth, grayScaleThreshold) { let imageData = imgData(img); let imageIn = thresholding(img.width, img.height, imageData, grayScaleThreshold); var segments = []; for(var i=0; i maxWhiteSpace || blackPixels > maxFontLineWidth || x == img.width-1) { if(patternLength >= minTextWidth){ var list = segments[y]; list.push([patternStartX, y, patternStartX+patternLength, y]); } whitePixels=0; blackPixels=0; patternLength=0; patternStartX=-1; } if(patternStartX != -1){ patternLength++; } processed[x][y] = true; } } } // Group line patterns intersecting in x coordinate and too near in y coordinate. for(var y=0; y= sB[2]) || (sA[0] >= sB[0] && sA[0] <= sB[2]) || (sA[2] >= sB[0] && sA[2] <= sB[2]) ) { sA[0] = Math.min(sA[0], sB[0]); sA[2] = Math.max(sA[2], sB[2]); sA[3] = sB[3]; listY.splice(i, 1); i--; listW.splice(j, 1); listW.push(sA); break; } } } } } // Convert the result to a Bbox() List. var boxes = []; for(var y=0; y= 5){ \n context.strokeStyle = \"#FF0000\";\n context.beginPath();\n context.rect(box.x, box.y-5, box.width, box.height+10);\n context.stroke();\n } \n } \n return context.canvas;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":684,"value":"url = \"https://raw.githubusercontent.com/lretondaro/images/master/urinario.png\";","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":393,"value":"md `## Implementation`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":111,"value":"createMatrix2D = function(rows, cols, value) {\n var arr = new Array(rows);\n for(var i=0; i threshold+thresholdRange){\n imageOut.data[ind] = 0;\n imageOut.data[ind+1] = 0;\n imageOut.data[ind+2] = 0;\n }\n else{\n imageOut.data[ind] = 255;\n imageOut.data[ind+1] = 255;\n imageOut.data[ind+2] = 255;\n }\t\t\t\t\n }\n\t\t}\t\n return imageOut;\n \n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":532,"value":"$4b","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":696,"value":"md `## Imports`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":539,"value":"import {Bbox, imgData} from '@lretondaro/utils-library'","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":678,"value":"d3 = require(\"d3@5\")","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W4c","stdlib":"1"}} 24:null