extract_text.kt

//detector is an instane of FirebaseVisionTextRecognizer 
detector.processImage(image)
   .addOnSuccessListener { firebaseVisionText ->
                    // Task completed successfully

                    for (block in firebaseVisionText.textBlocks) {
                        val blockText = block.text
                        val blockFrame = block.boundingBox
                      
                        for (line in block.lines) {
                            val lineText = line.text
                        //once you get the text elements, you can easily extract the text, email address, name mentioned 
                        //on the visiting card or any other image containing text. 
                        //Apply your logic accordingly.
                        //One sample is shown below for extracting the number of the form:- 011-22246388
                            for (element in line.elements) {
                                var elementText = element.text

                                if(elementText.contains('-')){
                                  val split=  elementText.split('-')
                                    var part1=""
                                    var part2=""
                                   split.let {
                                        part1 = it[0]
                                        part2 = it[1]
                                   }
                                     elementText=part1+part2
                                }

                                if(!elementText.isEmpty()){
                                    var numeric = true
                                    var num: Double = parseDouble("0")
                                    try {
                                        num = parseDouble(elementText)
                                    } catch (e: NumberFormatException) {
                                        numeric = false
                                    }
                                    if (numeric)
                                        print("Phone number detected is $num")
                                      
                                    else
                                        print(" Phone number is not detected on the card.")
                                }
                            }
                        }
                    }
                }