JPEG image decoding and jpeg Decoding
Introduction
JPEG is a widely used standard method for compressing images. JPEG is the abbreviation of JointPhotographicExpertsGroup. A file in this compression format is generally called JPEG. The common
BMP format
BMP is short for bitmap. It is a standard image file format in windows and can be supported by multiple Windows applications. With the popularity of the Windows operating system and the development of a wide range of Windows applications,
The JPEG file format can be saved in two ways. They are Baseline JPEG and Progressive JPEG.
The two formats have the same size and image data, and their extensions are the same. The only difference is that they are displayed differently.
Baseline
Pages use progressive JPEG to improve user experience and progressive jpeg
Today, we realized that there are two ways to save JPEG files: Baseline JPEG (standard) and Progressive JPEG (Progressive ). The two formats have the same size and image data,
Differences between baseline JPEG and progressive JPEG
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The JPEG file format can be saved in two ways. They are baseline JPEG and progressive JPEG.
The two formats have the same size and image data, and their
PHP converts a JPEG image to ProgressiveJPEG. The JPEG file format can be saved in two ways. They are BaselineJPEG and ProgressiveJPEG. the two formats have the same size and image data, and their extensions are the same. The only difference is that
Pages use progressive JPEG to improve user experience and progressive jpeg. The page uses progressive JPEG to improve user experience. Today, progressive jpeg realized that there are two ways to save the original JPEG File: BaselineJPEG (standard)
Target Board: gm8126Opencv1.0Since the image obtained by the 8126 Board is in JPG format and the JPG format is encoded in the memory, the jpg image data in the memory must be saved to the local disk during processing.Because cvloadimage () in opencv1
This article mainly introduces how PHP converts JPEG images to ProgressiveJPEG. This article also describes the differences between BaselineJPEG and ProgressiveJPEG and their advantages and disadvantages, for more information about how to save JPEG
This article only introduces the relevant content of JPEG compression. At the beginning, I tried to save time by using the features provided by Microsoft's GDI plus. It is very convenient to get the jpg image encoding first, create a bitmap object
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