Dgn File Reader' title='Dgn File Reader' />Image file formats Wikipedia. This article is about digital image formats used to store photographic and other images. For disk image file formats, see Disk image. For digital file formats in general, see File format. Image file formats are standardized means of organizing and storing digital images. Image files are composed of digital data in one of these formats that can be rasterized for use on a computer display or printer. An image file format may store data in uncompressed, compressed, or vector formats. Once rasterized, an image becomes a grid of pixels, each of which has a number of bits to designate its color equal to the color depth of the device displaying it. Penjelasan program. Baris 2. Menyertakan file library FPDF. Jika library disimpan di dalam folder tertentu, sertakan nama foldernya. Fungsi require di atas dapat. Free DGN viewer. The review and markup application for DWF files Autodesk Design Review can be used also as a free viewer for Microstation DGN files. Image file sizeseditThe size of raster image files is positively correlated with the resolution and images size number of pixels and the color depth bits per pixel. Images can be compressed in various ways, however. A compression algorithm stores either an exact representation or an approximation of the original image in a smaller number of bytes that can be expanded back to its uncompressed form with a corresponding decompression algorithm. Images with the same number of pixels and color depth can have very different compressed file size. Considering exactly the same compression, number of pixels, and color depth for two images, different graphical complexity of the original images may also result in very different file sizes after compression due to the nature of compression algorithms. With some compression formats, images that are less complex may result in smaller compressed file sizes. This characteristic sometimes results in a smaller file size for some lossless formats than lossy formats. For example, graphically simple images i. GIF or PNG format and result in a smaller file size than a lossy JPEG format. Vector images, unlike raster images, can be any dimension independent of file size. Dgn File Reader' title='Dgn File Reader' />SmartPCFixer is a fully featured and easytouse system optimization suite. With it, you can clean windows registry, remove cache files, fix errors, defrag disk. File size increases only with the addition of more vectors. For example, a 6. BImage file compressioneditThere are two types of image file compression algorithms lossless and lossy. Lossless compression algorithms reduce file size while preserving a perfect copy of the original uncompressed image. Lossless compression generally, but not always, results in larger files than lossy compression. Lossless compression should be used to avoid accumulating stages of re compression when editing images. Lossy compression algorithms preserve a representation of the original uncompressed image that may appear to be a perfect copy, but it is not a perfect copy. Often lossy compression is able to achieve smaller file sizes than lossless compression. Most lossy compression algorithms allow for variable compression that trades image quality for file size. Major graphic file formatseditIncluding proprietary types, there are hundreds of image file types. The PNG, JPEG, and GIF formats are most often used to display images on the Internet. These graphic formats are listed and briefly described below, separated into the two main families of graphics raster and vector. Discjuggler 4.60 Serial Number. In addition to straight image formats, Metafile formats are portable formats which can include both raster and vector information. Examples are application independent formats such as WMF and EMF. The metafile format is an intermediate format. Most applications open metafiles and then save them in their own native format. Page description language refers to formats used to describe the layout of a printed page containing text, objects and images. Examples are Post. Script, PDF and PCL. JPEGJFIFeditJPEG Joint Photographic Experts Group is a lossy compression method JPEG compressed images are usually stored in the JFIF JPEG File Interchange Format file format. The JPEGJFIF filename extension is JPG or JPEG. Nearly every digital camera can save images in the JPEGJFIF format, which supports eight bit grayscale images and 2. JPEG applies lossy compression to images, which can result in a significant reduction of the file size. Applications can determine the degree of compression to apply, and the amount of compression affects the visual quality of the result. When not too great, the compression does not noticeably affect or detract from the images quality, but JPEG files suffer generational degradation when repeatedly edited and saved. JPEG also provides lossless image storage, but the lossless version is not widely supported. JPEG 2. JPEG 2. 00. The compression methods used are different from the ones in standard JFIFJPEG they improve quality and compression ratios, but also require more computational power to process. JPEG 2. 00. 0 also adds features that are missing in JPEG. It is not nearly as common as JPEG, but it is used currently in professional movie editing and distribution some digital cinemas, for example, use JPEG 2. The Exif Exchangeable image file format format is a file standard similar to the JFIF format with TIFF extensions it is incorporated in the JPEG writing software used in most cameras. Its purpose is to record and to standardize the exchange of images with image metadata between digital cameras and editing and viewing software. The metadata are recorded for individual images and include such things as camera settings, time and date, shutter speed, exposure, image size, compression, name of camera, color information. When images are viewed or edited by image editing software, all of this image information can be displayed. The actual Exif metadata as such may be carried within different host formats, e. TIFF, JFIF JPEG or PNG. IFF META is another example. The TIFF Tagged Image File Format format is a flexible format that normally saves eight bits or sixteen bits per color red, green, blue for 2. TIFF or TIF filename extension. The Telugu New Songs. The tagged structure was designed to be easily extendible, and many vendors have introduced proprietary special purpose tags with the result that no one reader handles every flavor of TIFF file. TIFFs can be lossy or lossless, depending on the technique chosen for storing the pixel data. Some offer relatively good lossless compression for bi level black white images. Some digital cameras can save images in TIFF format, using the LZW compression algorithm for lossless storage. TIFF image format is not widely supported by web browsers. TIFF remains widely accepted as a photograph file standard in the printing business. TIFF can handle device specific color spaces, such as the CMYK defined by a particular set of printing press inks. OCR Optical Character Recognition software packages commonly generate some form of TIFF image often monochromatic for scanned text pages. GIF Graphics Interchange Format is in normal use limited to an 8 bit palette, or 2. GIF is most suitable for storing graphics with few colors, such as simple diagrams, shapes, logos, and cartoon style images, as it uses LZW lossless compression, which is more effective when large areas have a single color, and less effective for photographic or dithered images. Due to GIFs simplicity and age, it achieved almost universal software support. Due to its animation capabilities, it is still widely used to provide image animation effects, despite its low compression ratio compared to modern video formats. The BMP file format Windows bitmap handles graphic files within the Microsoft Windows OS.