A pellet grill is a type of outdoor cooking appliance that uses
compressed wood pellets as fuel to cook food. The pellets are fed into a
hopper, which then moves them into a burn pot where they are ignited by
an electric heating element. The heat generated by the burning pellets
is used to cook the food on the grill grates. Pellet grills typically
have digital temperature control systems that allow for precise
temperature regulation and cooking time. They are known for producing a
unique smoky flavor and are popular among barbecue enthusiasts.
First, WINDOWS system-level color management system Prior to the release of WINDOWS 95/98, the PC running WINDOWS environment is a 16-bit operating environment, and the true color of the color data is at least 24, 16-bit operating environment is clearly satisfied Without a requirement, the WINDOWS platform has been lacking important color management tools.
MICROSOFT collaborates with EASTMAN KODAK in its next-generation 32-bit system, using the KODAK COLOR MATCHING MODULE as the default internal color management application. The core of its color management architecture is the ICM (IMAGE COLOR MATCHING), which is integrated in the monitor. And printer setup routines. WINDOWS95/98 includes a set of device profile files (located in the /SYSTEM/COLOR directory under the WINDOWS directory) with the extension ICM Core.
Although WINDOWS 95/98 has made great progress in color management compared with the previous WINDOWS environment, its color management at the system level is still weak, causing the color management on PCs to be mostly program-level, which makes developers And equipment manufacturers have to develop non-standardized color management functions. WINDOWS 95/98 opens the ICM structure to users, allowing users to override KODAK COLOR MATCHING MODULE and replace it with other selected color management programs. For example, AGFA's FOTO TUNE 2.2, ADOBE's KPCMS (KODAK PRECISION COLOR MANAGEMENT SYSTEM), COREL's COREL COLOR MANAGER, etc. are all relatively successful CMSs used on PCs.
Second, PHOTOSHOP comes with the color function as ADOBE company's most famous commercial software, PHOTOSHOP has become the standard software for image processing, it has a unique color management, not only has powerful, flexible, convenient image processing capabilities, but also Provides input and output interfaces for third-party color management software. Therefore, PHOTOSHOP is increasingly welcomed by a large number of households. The discussion of the color management function of PHOTOSHOP is even more meaningful.
The color management function of PHOTOSHOP is focused on the display options (MonITOR SETUP), PRINTING INKS SETUP, SEPARATION TABLES, etc., under the COLOR SETTINGS, respectively. Condition, separation settings, and color management of input and output.
1, MonITOR SETUP
MonITOR SETUP includes monitor adjustments (adjustment of monitor brightness, color depth, window position and distortion, etc.) and monitor settings. It is relatively simple to adjust the monitor. Here, we only explain the display settings in detail.
Due to the different brands, models, manufacturers, and monitor usage of the monitor, the same image data will have different color effects on different monitors. In order to use ... onITOR SETUP to achieve. The MonITOR SETUP dialogue is shown in the box (Figure 1).
The MONITOR option gives some typical monitor types. If you are using a monitor package sold on the MONITOR option, you can just select the monitor first item, otherwise you can select the OTHER option. Then adjust the display's variable parameters by manually setting the parameters. If the GAMMA value affects the display of the image hue width, 1.8 is a suitable value for printing. If it is output to a slide or video, the GAMMA value is usually set to 2.2. However, it must be noted that data sharing and data processing must use the same GMMA value; WHIT POINT (white field) is a measure of whiteness when the red, green, and blue colors are equal in brightness, and is usually set to 6500K. It is the color temperature value of standard illumination body D65 recommended by CIE in colorimetry. If the user is using a calibration device provided by a third party, set it according to the parameters recommended by the third party; PHOSPHORS selects the type of picture tube; the user can select the type of picture tube using the device in the list box if the list box is not listed. Out, you can ask the display manufacturer for the correct red, green, and blue color coordinates and customize it through the CUSTOM in the list box, but there is the TRINITRON option in PHOSPHORS, which is the Sony CRT technology and has become the industry standard, and now most The monitors are all of this type; the ROOM PARAMETERS is used to set the intensity of the lighting in the room. After setting these parameters, press "SAVE" to store or press "LOAD" to load. If you need to further adjust, you can press the "CALIBRATE" button to call the PHOTOSHOP calibration program, as shown in Figure 2, the top of the calibration can preview GAMMA value change effect, select WHITE (can be compared with the paper) Select the BLACK button by dragging the red, green, and blue sliders and making the white block of the scale as consistent as possible with the paper. Adjust the three sliders to give the ladder a clear and visible gradient. The BALANCE button adjusts the display color. Partial.
2, PRINTING INKS SETUP
The basic purpose of PRINTING INKS SETUP is to provide PHOTOSHOP with information about the ink and the user's printer. PHOTOSHOP will carefully adjust the conversion process based on these locations so that the CMYK color mode is closest to the user's technological innovation. When the user changes the settings in the dialog box, only the display of the CMYK color mode image is affected (without affecting the RGB color Display of the image of the pattern).
PRINTING INKS SETUP Controls the output parameters; when the image is converted from RGB mode to CMYK mode, PHOTOSHOP will use the setting parameters in PRINTING INKS SETUP to simulate the print result on the screen.
The dialog box is shown in Figure 3. INK COLOR allows the user to select the type of printer and ink to be printed. The default setting is SWOP (overcoat color) because the SWOP organization has published its printing specification, and the user who selects the SWOP option can select the correct ink according to the printing specification. And paper type. In addition, users who choose other printing peripherals can also select the corresponding options from the peripherals in INK COLOR, such as SWOP (NEWSPRIHT), QMS, NEC, TEKTROMX, TOYO, and CANNON. The CUSTOM option can also be used to customize the C, M, Y, R, G, B base color and black tristimulus values ​​(as shown in Figure 4) to achieve special printing results. DOT GAIN adjusts the printed dot gain value. When the PHOTOSHOP RGB image is converted to the GMYK color mode, it adjusts the GMYK percentage in the image to compensate for the dot gain value of the proof. When the user changes the INK CLOR option, DOT GAIN The value is automatically invoked and it is generally not necessary to change the value in the DOT GAIN area. It is only possible to change the value in the DOT GAIN when the user uses its system to normalize to a sample output. GRAY BALANCE is used to calibrate the gray balance of the 4 CMYK channels. Typically, the GRAY BALANCE value is only changed when the user is recalibrating their system to print a proof (or sample) while the user file is in a CMYK color mode.
3, SEPARATION SETUP
Theoretically speaking, the same amount of C, M, Y trichromatic inks should be neutral gray when superposed, but due to the impure nature of the ink, the actual superimposed color is usually slightly brown, and the ink can express The density range is often less than the density range of the manuscript. When separating colors, the manuscript level needs to be compressed. The function of SEPARATION SETUP is to control the color separation output. The SEPARATION SETUP dialog box is shown in Figure 5.
In most cases, the default dialog settings will provide correct results. When the user needs to return to a special set of print settings or wishes to reload the BLACK GENERATION custom curve, the following parameters can be adjusted:
First, determine the type of color separation, using GCR (GRAY COMPONENT REPLACEMENT - Gray Replacement) or UCR (UNDER COLOR REMOVAL - Background Removal), which is usually determined by paper quality and printing requirements. GCR is usually used for coating Layer material and UR for uncoated material.
Then, in the BLACK GENERATION and BLACK INK LIMIT terms, the black version of the level curve and the maximum amount of black ink are determined. By switching between the options in the BLACK GENERATION menu, the user will see that as more black ink is added, the CMY ink is gradually reduced. In most cases, when the user returns from the ROB to the CMYK mode , MEDIUM will provide good results; BLACK INK LIMIT allows the user to set the maximum amount of ink supported by the printing device, the default setting is 300% (actual production set to 300% -340%), which means that the user's CMY ink total ... ...00%, if lower than this value, the maximum value of CMYK ink will drop in GREY RAMP. It is usually best to keep the default settings for each of these options without coordination with the user's printing device.
4, SEPARATION TABLES
After the above items are determined, the settings can be stored separately using SAVE and loaded using LOAD. If you plan to use different inks or print PHOTOSHOP items, you can save the settings for each item and set up a specific SEPARATION TABLE. When the user intends to shift the PHOTOSHOP item from RGB mode to CMYK mode to RGB mode, the color separation table can be used for mode conversion. In use, the user only needs to select the USER TABLE radio button from the LOAD item in the box of the SEPARATION TABLE dialog (shown in Figure 6).
Third, PHOTOSHOP's plug-in color management function PHOTOSHOP is an open structure that allows PHOTOSHOP's third-party plug-in module to join the PHOTOSHOP system. Therefore, in this sense, the color management function of PHOTOSHOP can be infinitely expanded. For example, the color management function of AGFA FOTOTUNE can be inserted into PHOTOSHOP in the form of FILTER, to separate color image processing, processing and output. Due to the diversity of this plug-in module, its color management functions and methods are limited and vary greatly. This is not detailed here.
After completing the above adjustments, it is possible to ensure that the image displayed on the monitor matches the output image as much as possible. However, due to differences in the color gamut of different color spaces and the application limitations of the PROFILE file, etc. It is very difficult to achieve "to be seen and called" color transmission or purposeful image reproduction. It is also necessary to give full play to people's subjective initiative, utilize the same experience, skills, and understanding of equipment characteristics as the user to use PHOTOSHOP powerful. The color correction tool performs artificial, purposeful color correction of image colors. Color compensation, regional color replacement, human skin color processing, image gradation, sharpness adjustment, restoration of old photographs or old image processing, adjustment of image brightness and contrast, and special processing of individual image positions. Artificially targeted color correction and PHOTOSHOP's color management system work together to create works that are faithful to manuscripts and embody artistic creation styles.
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