Ho to increases the image quality in pdfium.

[Mohan Selvaraj]

Hi All,

I have generated the entire PDF page as a image.But the image is slightly blurry ,So can you please provide any solution for increasing the sharpness for the bitmap image. 

Thanks,

[Mohan Selvaraj]

HI ALL,

I have extracted the pdf page as an image by using the below code snippet,but on changing the size of the bitmap the text content in the image is not sharp ,it i s blurry

Can you suggest a solution for improving the quality of the rendered image.

var data = bitmapImage.LockBits(new Rectangle(0, 0, Width, Height), ImageLockMode.ReadWrite, bitmapImage.PixelFormat);

                    int bytes = Math.Abs(data.Stride) * bitmapImage.Height;

                    var createdpages = PdfiumViewer.FPDFBitmap_CreateEx(Width, Height, 4, data.Scan0, bitmapImage.Width * 4);

                    uint background = (flags & PdfiumNative.PdfRenderFlags.Transparent) == 0 ? 0xFFFFFFFF : 0x00FFFFFF;

                    PdfiumViewer.FPDFBitmap_FillRect(createdpages, 0, 0, Width, Height, background);

                    PdfiumViewer.FPDF_RenderPageBitmap(createdpages, pages, 0, 0, Width, Height, 0, 0);

Kindly provide a solution for rendering the image with shapness.

Regards,

Mohan S 

 

[Lei Zhang]

How much are you scaling by? Can you provide a sample PDF and the
output? Are you building your own PDFium or using someone else's
prebuilt library? What version is it?

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