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Inserting Text To an Existing Pdf using Itext - CodeProject
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Figure 21.2 Principle scheme of tracing watermarking for coder-channel quality assessment in multimedia communications. data onto a channel, the mark undergoes the same alterations as suffered by the data. At the receiving side, the watermark is estimated and compared with the original. Since the alterations endured by the watermark are also likely to be suffered by the entire data, as they follow the same communication link, the watermark degradation can be used to estimate the overall alterations endured by the data. The tracing watermarking procedure for coder-channel quality assessment is given in Figure 21.2. The watermark embedding is performed by resorting to the spread-spectrum technique proposed in Cox et al. [17] for still images and applied to video sequences in Hartung and Girod [18]. The watermark is a narrowband low-energy signal. It is then spread so that it has a larger bandwidth. Consequently, the watermark energy contribution for each host frequency bin is negligible, which makes the watermark imperceptible. In the application addressed here, a system embedded into the data stream that is able to trace the degradations introduced by the transmission system composed by the coderchannel cascade and not perceptually affecting the data themselves is described.

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Hi everyone, How to generate pdf using c# with header and footer... I need example code.. ... iTextSharp .text.Document pdfDoc = new iTextSharp .text. ... i can convert to pdf .. But i need to add header and footer on my code.

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Adding content with PdfStamper Part 1 ( iText 5)
Up until now, we've created new documents using the five steps in the iText document-creation process. In this topic we'll add content to an existing document using PdfStamper. ... Listing 6.12 StampText.java Adding text to an existing document .... As discussed in the introduction of this topic, PDF isn't a format that can be ...

directory For example, the favorites extension point schema discussed later in this chapter will be stored in

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In our Favorites product, we would like other plug-ins to extend our product to provide additional types of Favorites objects To accomplish this goal, we will create a new favorites extension point and schema plus related infrastructure types so that others can extend As part of this process, we will recast our current Favorites objects as extensions to this new extension-point to ourselves that the new extension point does indeed work

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Page number in C# and iTextsharp - C# Corner
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A set of uncorrelated pseudorandom noise (PN) matrices is multiplied by the reference watermark. Both the PN matrices and the embedded watermark are known at the receiving side. The watermark is the same for each video sequence frame, whereas the PN matrices are different for each frame. This insures that the spatial localization of the mark is different frame-by-frame so that the watermark visual persistency is negligible. After the randomization of the watermark by the PN matrices, the embedding of the tracing marks is performed in the DCT domain. The watermark is embedded in the DCT middle-band frequencies of the whole image. After the inverse DCT (IDCT) has been performed on each frame, the whole sequence is coded by a video coder and, nally, transmitted. At the receiving side, the video is rst decoded; then, from the DCT of each received frame of the sequence, a matched lter extracts the spread watermark, which is nally despread using the known PN matrices. After having extracted the received watermark, it is matched to the reference one, which is known at the receiving side, and the mean-square error (MSE), between the original mark and the received one, is used as an index of the degradation affecting the received watermark.

We begin by opening the Favorites plug-in manifest editor and switching to the Extension Point page (see Figure 17-2)

Providing Custom Serialization One way to add encryption is to provide custom serialization Ignoring the complexities of encrypting and decrypting, this requires implementing the ISerializable interface in addition to using SerializableAttribute The interface only requires the GetObjectData()

Click the Add button to open the New Extension Point wizard, and enter "favorites" for the identifier and "Favorites" for the name (see Figure 17-3)

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How to add line of text to existing PDF using iTextSharp and C ...
Hi, please tell me solution this question. Regards lav.

c# add text to existing pdf file

Using iTextSharp To Watermark/Write Text To Existing PDF's ...
May 11, 2008 · First off, yes, I know there are other tutorials on how to watermark PDF's with iTextSharp. Unfortunately none of them showed me exactly what I ...

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itext add text to existing pdf c#

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