Digital Camera Imaging quality, several factors that affect the imaging quality of digital cameras

I recommend you to check out the Casio H10, I was paying attention to it some time ago.

Casio is almost famous in Japan, but it is a brand that can rank among the top 3 in Japan, and the H10 has 2 characteristics, 1, a rare 24mm ultra-wide angle, which is suitable for shooting landscapes and using in narrow rooms.

2,1000 shots of electricity, it's so cool to go out and travel!

These features are not possible with a camera of the same price range. The macro is also very easy to use. The imaging is also very good.

The most important thing is that the current ** has been lowered, which is very reasonable, within 1300 yuan.

Although the volume is not counting the card, the cost performance is still very high.

Or go online and see what it has to say.

I recommend Canon ixus105 that suits you at this price, a very real machine, imaging color reproduction and sharpness can be done, which is second to none at this price, you can go to the forum to see the evaluation. I think it's more suitable for you, if you have any questions, you can ask me, I hope it will be helpful to you!!

I rub the buddy 1200 and there's nothing professional at all.

What is the concept of *****? It mainly depends on skills, and after the shooting, the computer will be embellished, and it will be good**, don't think that people shoot it directly, it's impossible.

Now the top digital cameras are Nikon, Canon, and Sony, which are commoners, and the cost-effective ones, and the Casio upstairs is a tragedy.

The specific factors are as follows.

1. The larger the sensor area of the same era, the better the image quality;

2. The area of the same sensor is the same, and the lower the pixel, the better the image quality;

3. The medium format is better than the full-frame image quality, but the full-frame high sense is better, because the medium format is generally commercial or serious photography, relatively less to high-sensitivity, and the upper limit of the fuselage is only about 1600, while the upper limit of the full-frame fuselage reaches tens of thousands;

4. The full-frame image quality of 200,000 digital chain is better than that of half frame, the CMOS area is more than doubled, and the full frame has the advantage of a native lens, although the full-frame head can be used in the half-frame body, but the angle of view and resolution will be reduced;

5. The fixed focus aperture is larger than the zoom, the image quality is better than the zoom, and the accompaniment is due to the opening rate of the CMOS, the sensitivity is improved, the noise floor is smaller, and the chip processing speed is faster.

Digital cameras are optical, mechanical, and electronic products. It integrates the conversion, storage and transmission of image information, and has the characteristics of digital access mode, interactive processing with computer and real-time shooting.

When the camera's power switch is turned on, the master program chip starts to check the entire camera to determine whether the individual parts are in working condition. If everything is in order, the camera will be on standby; If a part fails, an error message will be displayed on the LCD screen and the camera will stop working completely.

When you aim at the target and press the shutter halfway, the microprocessor inside the camera works to determine the focus distance, shutter speed, and aperture size. When the shutter is pressed, the optical lens focuses light onto the image sensor, and instead of the position of the film in conventional cameras, this CCD CMOS semiconductor device converts the captured light signal of the scene into an electrical signal.

At this time, the electronic image corresponding to the shooting scene was obtained, because the image file is still an analog signal at this time, so it can not be recognized by the computer, it needs to be converted into a digital signal by a d, and then the microprocessor compresses the digital signal and converts it into a specific image format, and finally the image file that exists as a digital signal will be stored in the built-in memory in the specified format, and the ** that is photographed can be viewed by LCD at this time.

The imaging process of the camera.

In the camera imaging system, there are four coordinate systems: the world coordinate system, the camera coordinate system, the image coordinate system, and the pixel coordinate system. There is a transformational relationship between them as follows:

This is called the camera's internal reference matrix, which depends on the camera's internal parameters. Wherein, is the image distance, which respectively represents the physical silver slag length of a pixel on the camera photosensitive plate in the direction (i.e., how many millimeters is an image cavity pulsain on the photosensitive plate), which respectively represents the coordinates of the center of the camera photosensitive plate in the pixel coordinate system, and represents the angle between the transverse and longitudinal edges of the photosensitive plate.

The matrix: is called the external parameter matrix of the camera, and the relative position of the camera coordinate system and its world coordinate system determines its value, representing the rotation matrix and the translation vector.

The imaging principle of the camera is:

The lens of a camera acts as a convex lens, and the light from an object passes through the lens of the camera and converges on the film to form an inverted, shrunken real image. Compared with traditional cameras, traditional cameras use "film" as the carrier of their recorded information space, while the "film" of digital cameras is its imaging sensor, and it is integrated with the camera, which is the heart of digital cameras. Digital cameras use photoreceptors to convert optical signals into electrical signals, which are then converted to analog and recorded on memory cards.

Like the eyes, there are all sorts of things in the traditional camera imaging process:

Through the lens, the scene is focused on the film.

The photosensitive agent on the film changes with the loss of the photofinch date.

The photosensitive agent that changes after receiving light on the film is developed and fixed by the developer to form it.

Images that are opposite to the scenery or complementary in color Digital Camera Imaging Process:

1.The light is focused on the CCD or CMOS through the lens.

or CMOS converts light into electrical signals.

3.It is processed by the processor and recorded on the camera's memory.

4.Images are formed through computer processing and electro-optical conversion of monitors, or by printing by printers.

The specific process: The digital camera focuses the image on the CCD CMOS of the imaging element through the optical system, converts the photoelectric signal on each pixel into a digital signal through a D converter, and then processes it into a digital image through DSP and stores it in the storage medium. The light enters the camera from the lens, and the CCD performs color filtering and light sensitivity (photoelectric conversion), and "decomposes" the photographed object into pixels one by one according to a certain arrangement, and these pixels are transferred to the "analog-to-digital converter" in the form of an analog image and image dismantling signal, converted into a digital signal, transmitted to the image processor, processed into a real image, and then compressed and stored in a storage medium.

The reflected light of the scene is converging through the lens to form a latent image on the film, which is the result of a chemical reaction between the light and the emulsion on the film. The image is then developed and fixed. The digital image of the camera is different from the principle of film imaging, which is imaged on the CCD by the lens, and the photoelectric conversion of the CCD is used to generate the first signal, and then the image is generated after the electro-optical conversion of the display screen.

Judge the imaging effect of industrial cameras. Available from the following:

1.The fiber search ratio is obvious, and the boundary between the target and the background is clear.

2.The background is as light and uniform as possible so as not to interfere with image processing;

3.The color-related colors are true, the brightness is moderate, and not excessive**;

4.The overall brightness is uniform, if the overall is uneven but the gray scale is poor, it will not affect the image processing.

Log in to the machine vision product pants such as data query platform.

The world is pure imitation.