GCP Vision OCR - extract text from selection

GCP Vision OCR - extract text from selection

function textInsideRect (xMin, yMin, xMax, yMax) {
    return blocks.map( block => {
      return block.paragraphs.map( p => {
            return { 
              words: p.words.map( word => {
                return word.symbols.map( symbol => {
                  // we are drawing only rects 
                  // compare only the first and the 3 vertice
                  // this should do the job
                  if (
                         (symbol.boundingBox.vertices[0].x >= xMin 
                      && symbol.boundingBox.vertices[0].y >= yMin)
                      &&
                         (symbol.boundingBox.vertices[2].x <= xMax
                      && symbol.boundingBox.vertices[2].y <= yMax)
                     ) return symbol.text
                  return null
                }).join('')
              })
            }
      })
    }).flat()
  }
  
  const result = textInsideRect(0, 0, 782, 300)