Picture transfer protocol and image storage format

1. Tiff format tiff is a more flexible image format, its full name is tagged image file format, file extension tif or tiff. This format supports 256 colors, 24-bit true color, 32-bit color, 48-bit color, and many other color bits. It also supports multiple color modes such as rgb, cmyk, and ycbcr, and supports multiple platforms. The tiff file can be uncompressed. The file size is large and can also be compressed. It supports various compression methods such as raw, rle, lzw, jpeg, ccitt3, and 4 groups. Wave

This is the standard windows file format used for recording. The file extension is "wav". The format of the data itself is pcm or compressed.

3. Picture Transfer Protocol Picture Transfer Protocol English full name: picture transfer protocol, abbreviated as ptp. Ptp is a standard developed by Kodak in consultation with Microsoft. Image devices that comply with this standard can be better shared by systems and applications after accessing windows xp systems. Especially in the aspect of network transmission, the system can access these directly. The device is used for uploading pictures when creating a web album, and transferring pictures when chatting online. Of course, this is mainly for the convenience of ordinary users who have little computer knowledge, so that cameras, application software, websites, etc. can be combined to more easily accomplish some fool-style functions.

4. Image storage format Since the image files captured by digital cameras are large and the storage capacity is limited, the images are usually compressed and stored. The most common image storage formats are jpeg and tiff files. The jpeg is highly compressed and can make the files 1/4, 1/8, or 1/16 of the original size, so it can save a lot of storage space, but it is also relatively The original image data will be lost, many cameras will provide a specific compression ratio for the user to choose.

The tiff file is almost uncompressed, so the image will stay more complete than the jpeg. However, because the higher the image resolution and the smaller the compression, the more the memory space is occupied. Therefore, the quality of the image and the capacity of the memory card must be taken into account when photographing. For example, an 8mb smartmedia memory card may store 640 x 480 resolution, high compression format photos, but if there are 1024 x 768 uncompressed photos, only 3 photos can be saved. It is very large, so you must preset the storage mode or simply prepare enough memory cards before shooting.