User manual SONY DFS-500P VIDEO SWITCHER

[. . . ] These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment. [. . . ] Two-channel chroma keying With the optional BKDF-711 2nd Channel DME Board installed, you can use a second chroma key channel. To use two chroma key channels, set both title 1 and title 2 in the TITLE section of the menu control section. To select the foreground image used for the second chroma key channel, press the FRGD 2 button in the delegation section, turning it on, then with one of the AUXILIARY buttons select the desired video signal. To use a normal effect for a title key In this case, use one of the buttons in column 1 of the TITLE section to recall the title 1 setting menu (T1LUM, T1CRK, or T1MSK), and make the settings. 3-36 Chapter 3 Basic Operation Auto chroma keying To combine the background image and foreground image by auto chroma keying, use the following procedure. 4 1 TITLE 2 EDITOR LUM LUM DSK EDGE LUM TRAIL SHADOW 6 USER PGM SNAP SHOT STATUS EDIT GPI CRK CRK BORDER BEVELD EDGE INITIAL EDIT LEARN 5, 7 LOCATION SET UP MASK MASK MASK SOFT RECALL SHIFT CCR LIGHTING MATTES BORDER PATTERN ADJ PAGE F1 F2 F3 F4 EFFECT DSK FTB F5 HOLD INPUT PATTERN NUMBER TRANS RATE 3 DSK PVW SET SET CCR 1 2 1 2 AUXILIARY TITLE 1 TITLE 2 SOURCE SOURCE DSK FILL SUPER BG FRGD 2 MEMORY FRAME FREEZ MIX EFFECT N/R REV DIRECT DIRECT RECALL PATTERN LAST X BLACK 1 2 3 4 5 6 7 8 MEMORY BACKGROUND BLACK INT VIDEO TITLE 7 4 8 5 2 DOWN UP 9 6 3 INS FADE TO BLACK 1 2 3 4 5 6 7 8 MEMORY INT VIDEO DEL P IN P CUT 1 FOREGROUND BLACK DSK RST ENTER 1 2 3 4 5 6 7 8 MEMORY INT VIDEO AUTO TRANS 0 PATTERN/KEY PAD Chapter 3 Basic Operation Select the background image with the BACKGROUND bus buttons. The selected background image appears on the program monitor. Select the foreground image with the FOREGROUND bus buttons. If a preview monitor is connected, the selected foreground image appears in the preview monitor. 3 Select the effect pattern, and press the TITLE button in the effect transition section, turning it on. Note Depending on the effect pattern, it may not be possible to use chroma keying. If such a pattern is selected, the TITLE button does not light. Check the "TITLE" column of the table in the section "Effect Pattern Variant Forms and Decorations" (page A-22), and select a pattern for which this shows a check mark ( ). When the TITLE button lights, the N/R button also automatically lights, indicating that the system is in N/R (normal/reverse) mode. While the TITLE button is lit, it is not possible to switch out of N/R mode. (continued) Chapter 3 Basic Operation 3-37 Inserting Characters and Graphics (1) -- Title Key 4 In the TITLE section of the menu control section, press the CRK button, turning it on. To fill the inserted text or image with a color matte (using a color matte as key fill) Use the same procedure as for an auto chroma key (see page 3-39). Chapter 3 Basic Operation 3-41 Inserting Characters and Graphics (1) -- Title Key Adjusting the hue range for chroma keying (the "angle" setting) If there are fluctuations in the background color in the foreground image, it may not be immediately possible to key the background image into the whole of the desired background. In this case, you can correct this by increasing the range of hues (the "angle" setting) used for chroma keying. (This means using a wider-angled sector of the hue circle. ) Angle setting (Example: using a blue background color) · Increasing the angle increases the range of hues replaced by the background image, including shades of cyan and magenta. · Decreasing the angle decreases the range of hues replaced by the background image, restricting it to closely-matching blues. Note If the foreground image includes a color close to the "background" color in a position not intended to be replaced by the background image, then if you make the hue range too wide this part will also be filled by the background image (key fill). Chapter 3 Basic Operation Eliminating bleeding of colors into the edge of the inserted image (color cancel function) In a chroma key composite image, on the boundary of the inserted image, the "background" keying color in the foreground image (usually blue) tends to bleed into the boundary with the background image. In this case, by replacing the keying color in the composite image by another color (for example gray), the boundary is made to stand out less. This function is called "color cancel". To use the color cancel function, use the following procedure. 1 In the TITLE section of the menu control section, press the CRK button, turning it on, and display page 2 of the chroma key menu. The following example appears when the CRK button in column 1 is lit. T1CRK 2/3 PAGE COLCAN ON F1 Sat 0-100 F2 Hue 0-99 F3 FILL VIDEO F4 Densty 0-100 F5 2 In the effect transition section, press the TITLE button, turning it on, then press the CUT button. A composite of the foreground and background images appears in the program monitor. 3 3-42 Chapter 3 Basic Operation Press the F1(COLCAN) button, setting the parameter to "ON". 4 Watching the composite image on the program monitor, turn the F3(Hue) and F2(Sat) knobs, until the boundary between the background image and foreground image provides a natural match of hue and saturation. Creating a composite image with a semi-transparent foreground image (density function) You can make the inserted image semi-transparent, and insert it into the background image. Use the following procedure. 1 In the TITLE section of the menu control section, press the CRK button, turning it on, to display page 2 of the chroma key menu. The following example appears when the CRK button in column 1 is lit. T1CRK 2/3 PAGE COLCAN ON F1 Sat 0-100 F2 Hue 0-99 F3 FILL VIDEO F4 Densty 0-100 F5 Chapter 3 Basic Operation 2 Watching the composite image on the program monitor, turn the F5(Densty) knob, to adjust the transparency of the inserted image. Chapter 3 Basic Operation 3-43 Inserting Characters and Graphics (1) -- Title Key Masking Part of a Title Key You can apply a rectangular mask, to eliminate unwanted parts of the key. [. . . ] This is done to obtain the desired blurring of key edges. Key invert In luminance key, to reverse the polarity of a key source signal so that the hole is cut with the darker part of the signal. Key mask To hide part of a title key or downstream key signal so that only the desired part is used. Key source A signal used to cut a hole in a background picture for insertion of a key fill signal. [. . . ]