If we did our best to complete a design work, suddenly the customer said there was a small change. Originally we thought that only half the page size of the map was required to be enlarged into advertising images to decorate the customer's booth. This situation means that the work will be enlarged many times and the display will affect the final output. So how to solve this problem? In fact, as long as you master the correct way to enlarge the image, you can get satisfactory results with a few simple steps (there is corresponding software that can help us to complete most of the work).
Bitmaps for Vectors For two image formats (vectors and bitmaps), the amplification principle is different. Vector images are drawn by vector drawing software such as Adobe Illustrator, Macromedia Freehand, or CorelDraw. They are composed of mathematical modules such as lines and simple geometric shapes, so they can be magnified many times without affecting the image.
However, there are several points to be noted about the enlargement of the vector image: The most important thing is - the question of color gradients. When the graph contains a color gradient, it is necessary to ensure that the gradient has enough steps so that the gradient jumps are not seen in the enlarged image. The observation distance and the changing color are two important factors that determine the number of steps required for the color gradient in the gradient. A billboard viewed from a distance can be used less frequently than a stepped one, that is, with a wider number of steps.
On the other hand, scanned images or drawings, digital photographs, and works created with other graphics processing software are all bitmaps. Bitmaps are made up of pixels. Because pixel images cannot be magnified as mathematically as possible, it is important to balance the relationship between image size and resolution. The output resolution is represented by the number of pixels per unit length. If the relationship between the two is not handled properly, then the printed image will appear to have a gradation jump phenomenon, and the performance is not enough, or lack of detail. The ideal state is to scan the image with the desired resolution and size. However, if the plan changes, or there is not enough memory, or people who do not understand the purpose of drawing, this method is not desirable. Therefore, it is necessary to increase the original image size and resolution in consideration of the output method.
The amount of information required to print a picture, the key lies in the amount of information contained in the picture. How to estimate the amount of data needed to print an image? First of all, we must clarify the following questions:
1, the size of the output size
2. The output resolution should match the resolution recommended by the equipment (usually a wide-format inkjet printer, electronic color printer, large laser imagesetter).
3. For pictures that are to be output using a laser imagesetter, be sure to pay attention to its screening format, usually for AM screening; some use FM screening.
4. If it is a photograph or other painting that needs to be scanned, to understand the physical size of the scanned document, it is possible to determine the magnification factor during scanning.
The resolution and size of the color continuous output format inkjet printers, electrostatic copiers and thermal sublimation transfer devices do not produce true continuous tone, although we are used to refer to them as outputting "continuous" tone images. Dithering is used to process the dot matrix so that discrete dots appear to give people a seamless feel, but the idea still exists. A file contains the appropriate digital information to show the details of the image. It is not difficult to determine the output resolution for the production of wide-format continuous prints, which is mainly determined by two factors: the observation distance and the device performance.
Distance distance reading books and other small books are all read at close range. Therefore, as long as you know the number of printing screens, you can easily determine its output resolution. The production of large-format color graphics such as posters, banners, posters, car covers, and billboards needs to take into account actual conditions. They have different viewing distances, and they have to show a continuous tone effect in our eyes. The resolution of an image is inversely proportional to the viewing distance. For example, a poster viewing within a distance of 2-3 meters requires at least a 300 dpi resolution or even higher. While billboards are usually viewed hundreds of meters or kilometers away, a resolution of 18 dpi is sufficient. This rough estimate should also be changed as necessary based on the output capabilities of the device and the characteristics of the film. However, usually, the output resolution decreases as the viewing distance increases.
Equipment Features The best results you can get from large format images vary from device to device. Most large-format output devices have hardware resolutions of 200, 300, and 400 dpi, but this does not mean that the image must be designed at this resolution. For example, a 36 X 48 CMYK color mode TIFF image, if its resolution is 400dpi, would have to occupy 1G of hard disk space and several G of memory to handle, but most systems do not have such a high configuration. Fortunately, most wide-format output systems integrate interpolation software that can process the image prior to output, allowing its resolution to reach the device's hardware resolution. However, under normal circumstances, it is considered to be possible whether the output of the maximum size of the output device is output at a lower resolution or if the output of the device having the highest resolution of the device is only a part of the maximum size of the output device.
Formula 1: Total number of pixels in the width direction/Output device resolution = Maximum output width For example, Capitol Color estimates that the wide-format prints they make account for 35% of the company's business. The customer stores the picture at 20% to 50% of the resolution of the output hardware device. For example, if the hardware output resolution is 400dpi, the resolution of the picture is 100 to 200dpi, so that the best result can be obtained. Under normal circumstances, if more than 50% of the hardware resolution is used to store the image, then diffusing the jitter will cause the information in the graphic to be lost.
A company in New York that does wallpaper and window backgrounds, etc. - Digital Dirigible recommends that when the device resolution is 200dpi, the physical size of the CMYK file should be 25% of the final output size; when the device resolution is 300dpi, the size is final. 1/6 of the output size. Although each printer has its own habits and provides some suggestions based on some of its own experience, it is generally believed that too high resolution is useless, and the 400dpi resolution is sufficient for achieving high quality final output quality. Now. For graphics that have been scanned or digitized, knowing the output resolution of the target device, you can determine the maximum output size to achieve an effect.
Bitmaps for Vectors For two image formats (vectors and bitmaps), the amplification principle is different. Vector images are drawn by vector drawing software such as Adobe Illustrator, Macromedia Freehand, or CorelDraw. They are composed of mathematical modules such as lines and simple geometric shapes, so they can be magnified many times without affecting the image.
However, there are several points to be noted about the enlargement of the vector image: The most important thing is - the question of color gradients. When the graph contains a color gradient, it is necessary to ensure that the gradient has enough steps so that the gradient jumps are not seen in the enlarged image. The observation distance and the changing color are two important factors that determine the number of steps required for the color gradient in the gradient. A billboard viewed from a distance can be used less frequently than a stepped one, that is, with a wider number of steps.
On the other hand, scanned images or drawings, digital photographs, and works created with other graphics processing software are all bitmaps. Bitmaps are made up of pixels. Because pixel images cannot be magnified as mathematically as possible, it is important to balance the relationship between image size and resolution. The output resolution is represented by the number of pixels per unit length. If the relationship between the two is not handled properly, then the printed image will appear to have a gradation jump phenomenon, and the performance is not enough, or lack of detail. The ideal state is to scan the image with the desired resolution and size. However, if the plan changes, or there is not enough memory, or people who do not understand the purpose of drawing, this method is not desirable. Therefore, it is necessary to increase the original image size and resolution in consideration of the output method.
The amount of information required to print a picture, the key lies in the amount of information contained in the picture. How to estimate the amount of data needed to print an image? First of all, we must clarify the following questions:
1, the size of the output size
2. The output resolution should match the resolution recommended by the equipment (usually a wide-format inkjet printer, electronic color printer, large laser imagesetter).
3. For pictures that are to be output using a laser imagesetter, be sure to pay attention to its screening format, usually for AM screening; some use FM screening.
4. If it is a photograph or other painting that needs to be scanned, to understand the physical size of the scanned document, it is possible to determine the magnification factor during scanning.
The resolution and size of the color continuous output format inkjet printers, electrostatic copiers and thermal sublimation transfer devices do not produce true continuous tone, although we are used to refer to them as outputting "continuous" tone images. Dithering is used to process the dot matrix so that discrete dots appear to give people a seamless feel, but the idea still exists. A file contains the appropriate digital information to show the details of the image. It is not difficult to determine the output resolution for the production of wide-format continuous prints, which is mainly determined by two factors: the observation distance and the device performance.
Distance distance reading books and other small books are all read at close range. Therefore, as long as you know the number of printing screens, you can easily determine its output resolution. The production of large-format color graphics such as posters, banners, posters, car covers, and billboards needs to take into account actual conditions. They have different viewing distances, and they have to show a continuous tone effect in our eyes. The resolution of an image is inversely proportional to the viewing distance. For example, a poster viewing within a distance of 2-3 meters requires at least a 300 dpi resolution or even higher. While billboards are usually viewed hundreds of meters or kilometers away, a resolution of 18 dpi is sufficient. This rough estimate should also be changed as necessary based on the output capabilities of the device and the characteristics of the film. However, usually, the output resolution decreases as the viewing distance increases.
Equipment Features The best results you can get from large format images vary from device to device. Most large-format output devices have hardware resolutions of 200, 300, and 400 dpi, but this does not mean that the image must be designed at this resolution. For example, a 36 X 48 CMYK color mode TIFF image, if its resolution is 400dpi, would have to occupy 1G of hard disk space and several G of memory to handle, but most systems do not have such a high configuration. Fortunately, most wide-format output systems integrate interpolation software that can process the image prior to output, allowing its resolution to reach the device's hardware resolution. However, under normal circumstances, it is considered to be possible whether the output of the maximum size of the output device is output at a lower resolution or if the output of the device having the highest resolution of the device is only a part of the maximum size of the output device.
Formula 1: Total number of pixels in the width direction/Output device resolution = Maximum output width For example, Capitol Color estimates that the wide-format prints they make account for 35% of the company's business. The customer stores the picture at 20% to 50% of the resolution of the output hardware device. For example, if the hardware output resolution is 400dpi, the resolution of the picture is 100 to 200dpi, so that the best result can be obtained. Under normal circumstances, if more than 50% of the hardware resolution is used to store the image, then diffusing the jitter will cause the information in the graphic to be lost.
A company in New York that does wallpaper and window backgrounds, etc. - Digital Dirigible recommends that when the device resolution is 200dpi, the physical size of the CMYK file should be 25% of the final output size; when the device resolution is 300dpi, the size is final. 1/6 of the output size. Although each printer has its own habits and provides some suggestions based on some of its own experience, it is generally believed that too high resolution is useless, and the 400dpi resolution is sufficient for achieving high quality final output quality. Now. For graphics that have been scanned or digitized, knowing the output resolution of the target device, you can determine the maximum output size to achieve an effect.
Teaching Interactive Whiteboard
The use of high-efficiency multimedia teaching Interactive Whiteboard in education will not only improve the teaching efficiency of the school, but also improve the teacher's ability to guide students correctly, and teaching smart whiteboard can let teacher spend time in effective places instead of wasting ineffective things. The intelligent touch teaching all-in-one machine gives teachers more room for expression. The teaching smart digital board belongs to the teaching market, and the teaching interactive smart board market has been growing rapidly since the end of 2015.
Teaching Interactive Smart Board,Teaching All-In-One Machine,Teaching Smart Digital Board,Teaching Smart Whiteboard
Guangdong Zecheng Intelligent Technology Co., Ltd , https://www.szzcsecurity.com