Increase Brightness and Contrast of image after capturing from camera in Android

I am making a one application in which I capture an image from camera and make the pdf out of it.

But the quality of image is poor. So I want to set the brightness and contrast of the image.

1. Is there any way to increase Brightness and Contrast of image after captu开发者_如何学运维ring from camera in Android?

2. After capturing the image when I cropped it and then display it in pdf, the lower part of the image has been cut.

For pdf usage in this application I have used iText.jar (5.0.6).

For having the full image displayed in the pdf generated, please try by applying 'scaleAbsolute' to the image.

File newFile = new File(pdfPath);
newFile.createNewFile();
FileOutputStream pdfFile = new FileOutputStream(newFile);

Document document = new Document();
PdfWriter.getInstance(document, pdfFile);
ocument.open();

Rectangle rectangle = document.getPageSize();
Image image = Image.getInstance(imagePath);

image.scaleAbsolute((rectangle.getWidth() - 75.0f),
                    (rectangle.getHeight() - 75.0f));