What is the difference between 8 bit and 32 bit?

The format of the image has nothing to do with the pixels.

Image format: refers to the encoded form of the image, the format of different versions, and the image information contained in it is different.

Pixels of an image: Refers to the product of the pixels in the height and width of the image, the larger the pixels, the larger the image.

Image save what format you want according to your needs:

1. If you need to save the layer information, you can save it in psd format, which is conducive to further modifying the image in the future;

2. If you need to keep the transparent part of the image, you can save it in png format;

3. Unless otherwise specified, the general digital photos can be saved in JPEG format;

4. Save it in other specific formats as required.

If you don't want a little change, it's a TIFF file. But if you compare it with the loss of volume and quality, the jpeg file format is the best.

Diagrams made with PS are generally saved as jpg

TIF or PNG, bitmap BMP is the lowest compression ratio.

BMP, but the large capacity also takes up space.

To put it simply: if a pixel is recorded in 8 bits, it can only represent 2 to the 8th power and 256 colors.

If you use 32 bits to record a pixel, you can represent 2 to the 32nd power (or 2 to the 24th power, explained later), more than 4 billion colors (or more than 16 million colors).

Some** is very simple, there are no more than 256 colors in total, and this use can save a lot of storage space by using 8bit.

Some ** are more complicated, but merging some similar colors and using 256 colors to express this ** can also have a good effect, which can also save storage space. There are even some "jitter" algorithms, so that the pixels of the two colors are arranged according to a certain pattern, and it looks like there is a third color.

Some ** are too complex (e.g. there are gradient colors), no matter how you deal with it, it is very ugly to express it with 256 colors, and then you can only use more bits to represent one pixel. The common ones are 24bit and 32bit.

Usually 34bit color uses three 8bits to represent R red, g, green, B blue, 32bit, in fact, there is also an 8bit commonly used to represent transparency (alpha), which is used when multiple ** are superimposed.

In fact, how to use these bits, there can also be other regulations, different formats are still different, and more detailed needs to be analyzed on a case-by-case basis.

Generally speaking, in order to store the color of each pixel in an image, the computer will decompose the color into several colors, and quantify and store each color. One common way is to break it down into red, green, and blue, which corresponds to the English abbreviation RGB. Each color has a total of 256 states from 0-255.

One byte of computer storage is 8 bits, each bit can record two states, 0 and 1, using one byte can store 256 states, and three bytes (24 bits) can be combined to create common colors.

If you directly store the RGB color value for each pixel, each pixel needs to occupy 3 bytes. Some images have a large number of colors that are the same, so you can set aside an area in the image file to store a "color palette" to store each color in the image, and then when recording each pixel, just record the color of that pixel corresponding to the number of colors in the "palette". This practice is called the index pixel format, or index color, and there are other names, which are much the same.

In the general index color format, common extensions are gif and png. And the maximum number of colors in the palette is 256, which can be reduced to one color or less.

If there are a large number of colors in the original image, some colors will be lost when converted to index colors, and some algorithms need to be passed to make the image look less lost.

Choose the 2:YCBCR 4:2:2 pixel format. The difference between these is not clear in one or two sentences, and Panasonic can choose this.

The Format Tube Viscometer is a glass tube with a plug with an inner diameter of about 115 mm and two graduation marks at 100 and 108 mm. Generally, 20 pieces are packed in one box. It is used to fill liquid samples, and is widely used in coating film research laboratories and building spring installations, as well as in the paint and paint manufacturing industry.

When measuring, load the liquid to the 100mm scale, plug the plug after constant temperature, go to the 108mm engraved line, continue to maintain the constant temperature for 10min, quickly invert the viscosity tube, and place the viscosity tube vertically in a 25 water bath, and measure the time it takes for the bubbles to rise to the top of the viscosity tube. Results are expressed in seconds and noted as 25.

Open the PS software, click "File" in the menu, "Open"**.

Click on "Image" in the menu bar – Image Size.

Make sure that "Reorder image pixels" is checked, and generally constrain the scale, and then modify the pixels.

Note: If the pixel is smaller, you cannot change it back to the original image after saving, because some of the information has been lost.

The format can be selected when you are sure to save it, and you can save the default format of Photoshop PSD

You can also save any format: tif, bmp, jpeg, jpg, jpe, gif, etc.

When you create a new file, you can set the pixels and units inside, etc.

8-bit represents 2 to the 8th power, 32-bit represents 2 to the 32nd power, and in the pixel format it represents the number of colors.

If it is**simple kind of 8-bit, it can not only save a lot of space, but also fully express**.

If it is complex, 32-bit is used, and the 32-bit image has a better color transition than the 8-bit image, which is more delicate and carries more color information. This is the reason why the number of colors that can be represented in a 32-bit image is much larger than that in an 8-bit image, and the processing speed is slower for a 32-bit image because it needs to process more information.

1 bit deep can only display two colors, pure black and pure white.

8-bit depth (2 to the 8th power) means that there are 256 grayscale or color combinations.

16 bits deep (2 to the 16th power) can represent 65 536 possible color combinations.

The 24-bit depth is capable of expressing approximately 16.7 million different colors.

The higher the bit depth, the richer the color gradation.

The clarity is absolutely proportional to the file size!

As long as the pixels of ** are smaller, the sharpness of ** will definitely decrease!

So, there is no such ** format! If there were, the other formats would be obsolete, right? Passing a 1k ** is equivalent to a 10m **quality, why not? --It's impossible!