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sampling Converting analog information into a digital representation by measuring the value of the analog signal at regular intervals, called samples, and encoding these numerical values in digital form Sampling is often based on specified quantization levels Sampling can also be used to adjust for differences between different digital systems See resampling and subsampling sampling frequency The frequency used to convert an analog signal into digital data saturation The intensity or vividness of a color scaling Altering the spatial resolution of a single image to increase or reduce the size, or altering the temporal resolution of an image sequence to increase or decrease the rate of display Techniques include decimation, interpolation, motion compensation, replication, resampling, and subsampling Most scaling methods introduce artifacts scan line A single horizontal line traced out by the scanning system of a video display unit 525/60 (NTSC) video has 525 scan lines, about 480 of which contain the actual picture 625/50 (PAL/SECAM) video has 625 scan lines, about 576 of which contain the actual picture scanning velocity The speed at which the laser pickup head travels along the spiral track of a disc SCMS The serial copy management system used by DAT, MiniDisc, and other digital recording systems to control copying and limit the number of copies that can be made from copies SCSI Small Computer Systems Interface An electronic interface and command set for attaching and controlling internal or external peripherals, such as a DVD-ROM drive, to a computer The command set of SCSI was extended for DVD-ROM devices by the SFF 8090 specification SD 1) Standard definition 2) Secure Digital An SD card is a small, flash memory, data storage device, about the size of a US quarter, used in many consumer electronic products including BD players, digital cameras, and cell phones SDDI Serial Digital Data Interface A digital video interconnect designed for serial digital information to be carried over a standard SDI connection SDDS Sony Dynamic Digital Sound A perceptual audio-coding system developed by Sony for multichannel audio in theaters A competitor to Dolby Digital and DTS, and an optional audio track format for DVD SDI See Serial Digital Interface Also Strategic Defense Initiative, aka Star Wars, which was finally released on DVD so fans can replace their bootleg copies SDMI Secure Digital Music Initiative A failed attempt at a specification to protect digital music SDTV Standard-definition television A term applied to traditional 4:3 television (in digital or analog form) with a resolution of about 700 480 (about 1/3 megapixel) Contrast this with HDTV seamless angle change The ability of DVD-Video to change between multiple points of view within a scene without interrupting normal playback seamless playback A feature of DVD-Video where a program can jump from place to place on the disc without any interruption of the video This enables different versions of a program to be put on a single disc by sharing common parts SECAM S quential couleur m moire (sequential color with memory) An analog television standard used in France and in parts of Eastern Europe, Africa, and Asia Various version of SECAM use different scanning systems and color subcarrier frequencies (identified with letters B, D, G, H, K, and L), the most common being 625 lines at 50 fields per second, with color subcarriers 42 or 44 MHz It s very common for video to be carried in 625/50 (PAL) format and only converted to a SECAM signal before broadcast or output (as with DVD players with SECAM output) The other common TV systems are NTSC and PAL SECAMx Sequential couleur avec m moire/sequential color with memory A composite color standard similar to PAL but currently used only as a transmission standard in France and a few other countries Video is produced using the 625/50 PAL standard and is then transcoded to SECAM by the player or transmitter.

The built-in function objects use the header <functional> Let s begin with a simple example The following program uses the transform( ) algorithm (described in the preceding section) and the negate() function object to reverse the sign of a list of values

Note: The txtPhotoFile text box displays a gray background to indicate it is read-only. 4 Set the tab order for these new controls.

// Use a unary function object #include <iostream> #include <list> #include <functional> #include <algorithm> using namespace std;

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In the tab order view of the page, click controls within the panel in order. Press the Esc key when finished. Note: As you can see in the graphic, the controls within the panel are numbered to indicate both the tab index of the panel and of the specific control.

int strncmp(const char *str1, const char *str2, size_t count) int strnicmp(const char *str1, const char *str2, size_t count) int strncmpi(const char *str1, const char *str2, size_t count)

Note that the labels and text boxes here are defined within the Panel control, rather than within the form. In the InitializeComponent method, the controls are added to the Panel object much like we have seen other controls added to the Form class in previous chapters.

The prototypes for the strncmp( ) and strnicmp( ) functions, and the strncmpi( ) macro, are found in <stringh> Of these, only strncmp( ) is defined by the ANSI/ISO C/C++ standard The strncmp( ) function lexicographically compares no more than count characters from the two null-terminated strings The functions strnicmp( ) and strncmpi( ) perform the same comparison while ignoring case; strncmpi( ) is a macro that translates to a strnicmp( ) call All three functions return an integer based on the outcome, as shown here:

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this.panel1.Controls.AddRange(new System.Windows.Forms.Control[] { this.txtPhotographer, this.txtDate, this.txtCaption, this.txtPhotoFile, this.label4, this.label3, this.label2, this.label1 });