Picture Perfect: Image Formats and Resolution

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فهرست عناوین اصلی در این پاورپوینت

● Picture Perfect: Image Formats and Resolution
● What is an Image File?
● Image capture / creation
● Capture: It’s all about size!
● Capture: Quality counts!
● Capture: Formats for safe keeping
● Editing: Why?
● Editing: Tools for the job!
● Output: What’s your target?
● Output: to Screen
● Output: to Print
● Output: B&W halftones
● Output: full colour CMYK
● Output: Gamut mismatch
● Summary

نوع زبان: انگلیسی حجم: 1.74 مگا بایت
نوع فایل: اسلاید پاورپوینت تعداد اسلایدها: 23 صفحه
سطح مطلب: نامشخص پسوند فایل: pptx
گروه موضوعی: زمان استخراج مطلب: 2019/05/15 09:25:42

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image, ., file, capture, colour, adelaide, university, slide, x, format, megapixel, size,

توجه: این مطلب در تاریخ 2019/05/15 09:25:42 به صورت خودکار از فضای وب آشکار توسط موتور جستجوی پاورپوینت جمع آوری شده است و در صورت اعلام عدم رضایت تهیه کننده ی آن، طبق قوانین سایت از روی وب گاه حذف خواهد شد. این مطلب از وب سایت زیر استخراج شده است و مسئولیت انتشار آن با منبع اصلی است.

https://www.adelaide.edu.au/learning/teaching/development/docdesign/resources/docDesign06_imageFiles.pptx

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عبارات پرتکرار و مهم در این اسلاید عبارتند از: image, ., file, capture, colour, adelaide, university, slide, x, format, megapixel, size,

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picture perfect image formats and resolution peter murdoch march ۲ ۱۴ preparing good looking documents the university of adelaide the university of adelaide slide picture perfect image formats and resolution when preparing teaching materials you may want to include images to display information graphically to highlight an idea or concept or to provide decoration. there are three key stages to consider when using images image capture image editing and image output. understanding the features of image files and formats can help you make appropriate choices to ensure that your use of images is as successful as possible. the university of adelaide slide what is an image file image files can be one of two types a vector or a raster file. a vector file uses geometric shapes and lines and mathematical equations to describe an image. a raster file uses pixels laid out in a grid to describe an image. a pixel is the smallest possible unit of image data. vector images have to be converted to raster files to be displayed or printed. source www.vectoropenstock.com the university of adelaide slide image capture creation original image files can be obtained in a number of ways. existing files can be acquired from stock photo websites some of which supply images for free and some which charge fees and apply restrictions on using the image. an image can be captured using a digital camera or a scanner. a photocopier can be used as a scanner but it usually only captures data in black and white. you can also take a screen capture from your computer using the snipping tool windows or grab mac . an image can be created using either vector graphics or raster graphics software. the university of adelaide slide capture it s all about size camera megapixels mp scanner dots per inch dpi – at ۱ creation dimensions width x height the more pixels captured the larger the file size the more pixels captured the larger the possible print size less pixels cannot be made more without losing quality but more pixels can be made less how you will use the image can influence your choice of file size the university of adelaide slide capture it s all about size minimum megapixels for quality prints printed at ۳ dpi max print size minimum mp resolution ۴ x ۶ ۲ megapixels ۱۶ x ۱۲ ۵ x ۷ ۳ megapixels ۲ ۴۸ x ۱۵۳۶ ۸ x ۱ ۵ megapixels ۲۵۶ x ۱۹۲ ۱۱x ۱۴ ۶ megapixels ۲۸۱۶ x ۲۱۱۲ ۱۶ x ۲ ۸ megapixels ۳۲۶۴ x ۲۴۶۸ ۱۶ x ۲۴ ۱۲ megapixels ۴۲ x ۲۸ source http www.digicamhelp.com camera‐features camera‐parts megapixels the university of adelaide slide capture quality counts colour space – the bit depth of an image file determines the potential number of different colours it can store. a higher bit depth means a larger file size. ۱ bit ۲ colours ۸ bit ۲۵۶ colours ۱۶ bit thousands of colours ۲۴ bit millions of colours ۳۶ bit ۴ channel colour cmyk ۸ bits ۱ byte the university of adelaide slide capture quality counts colour gamut the dynamic range of colours capable of being captured for an image file. also the colour range capable of being displayed on a screen or produced by a printer. source http www.viovio.com wiki understanding color the university of adelaide slide capture quality counts focus the human element – an image that is out of focus when it is taken cannot be made in focus later so careful control of the camera is important. compression – is a technique for storing more data in less space. there are two types of compression used for image files lossless and lossy compression. lossless compression saves space by packing up and grouping common colours. all the colour pixels are restored when the file is opened and no data is lost. lossy compression saves space by discarding pixels that are not necessary for viewing the file. when opened the pixels are restored using colours from the available set. data is lost every time a lossy file is edited and saved. the university of adelaide slide capture formats for safe keeping saving your original images in a suitable file format to maximise their future use is very important. store or archive your image files in a format that will be readily available in the future – a recognised standard format is best. these standard formats are also likely to be well supported in any new versions of image editing software. for vector images – eps png and svg. for raster images – bmp tif and jpg. the university of adelaide slide editing why there are many reasons why you might need to edit your image files to resize them to crop them to adjust their tone or colour balance or to convert them into a format suitable for display on screen or for printing. but … never use your original captured created image files always edit on a copy. once you have saved over your original you cannot get it back. limitations the university of adelaide slide editing tools for the job computer based editors these have basic editing capabilities. picture manager windows preview or iphoto mac commercial editors for raster images adobe photoshop corel paintshop pro for vector images adobe illustrator corel draw autocad open source editors for raster images gimp for vector images inkscape the university of adelaide slide output what s your target how you prepare your image file in the editing stage and what format you choose to save the image file in will depend on where you plan to use the image – on what device you are targeting. this device will most likely be a computer screen or a printer. image files for computer screens are generally low resolution rgb based files that are usually small in size. image files for printing are usually large high resolution files that support high quality output in black and white grayscale or full colour. the university of adelaide slide output to screen images for display on screen use a resolution of ۷۲ ppi. monitor size in …

کلمات کلیدی پرکاربرد در این اسلاید پاورپوینت: image, ., file, capture, colour, adelaide, university, slide, x, format, megapixel, size,

این فایل پاورپوینت شامل 23 اسلاید و به زبان انگلیسی و حجم آن 1.74 مگا بایت است. نوع قالب فایل pptx بوده که با این لینک قابل دانلود است. این مطلب برگرفته از سایت زیر است و مسئولیت انتشار آن با منبع اصلی می باشد که در تاریخ 2019/05/15 09:25:42 استخراج شده است.

https://www.adelaide.edu.au/learning/teaching/development/docdesign/resources/docDesign06_imageFiles.pptx

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