Please find attached pdf, which have 'image text' within
the red box at the top of the pdf. I have to read the text from the red box in
the attached pdf but that part is image.
Is it possible using aspose dll if so please send the
trial dll to me and sample code, if its works we will purchase your
product.
Thanks for your inquiry. You may accomplish your requirements in two steps, create a searchable PDF document form image using Aspose.Pdf with collaboration of some other OCR application supporting HOCR standards and later extract text from specified PDF page region using Aspose.Pdf.
For converting Image to searchable PDF document.You can use free google tesseract OCR for the purpose. In first step please convert your image to PDF and later can convert it into searchable PDF document as described following. Please install google tesseract OCR on your computer from http://code.google.com/p/tesseract-ocr/downloads/list and after that you will have tesseract.exe console application. Below you can see usage example.
Moreover, I am sorry to update you that call back method used to convert PDF to searchable PDF document is malfunctioning in current Aspose.Pdf version. However issue has been resolved in upcoming release i.e. 10.9.0. It will be published in start of October, 2015. We have linked your post to the released issue id (PDFNEWNET-38495), you will be notified as soon as it is published.