I want to make the photo transparent! Five key factors

This refers to the main factors of influence.

The former pixels mainly focus on the middle tune, which belongs to the low-contrast histogram.

The latter has a more uniform pixel distribution. The former can be achieved by the S-curve, allowing the pixels to be shifted to both sides.

When we increase the contrast of a graph, the effect of the picture is this:

Contrast can be eliminated gray, the picture of black and white contrast will be more obvious, light and shadow changes more intense, thus giving people more "transparent" feeling.

Well, this is the contrast, we all know, can be said to be nonsense = =.

The first histogram is mainly distributed in the low light section, while the second one is more evenly distributed.

If we increase the brightness, the screen changes are:

If the brightness of the screen is higher, it will give people a lighter sense of quality, such as in the visual perception of people, will feel the flower petals thinner, so give people a sense of permeability.

Well, it's also close to crap, but establishing a histogram and an actual photo correlation will help and help with analysis and manipulation.

　Three, color

People's ability to receive different colors is not the same, such as the human eye on the green is more sensitive than the other colors, which will affect our perception of the transparency of the screen (the more sensitive to our feeling is to look more clear, also more transparent).

Well, it's easier to ignore.

　Iv. saturation

The higher the saturation of a color, the higher the purity, the greater the stimulation on the person, therefore, the relatively high saturation will make people produce "This goods I see clearly" the illusion, therefore, saturation is also one of the factors of influence.

Well, often forget to tune. All except the curve forget to tune = =. It seems that the good is not lazy.

　　Five, sharp degree

The higher the sharpness, the clearer the outline of the picture, the more clear the impression is, the more transparent it becomes.

"Analytical Practice"

Let's look at this picture:

You can see that the left side of the histogram is almost without pixels, which leads to the absence of a pure black part of the picture, and the whole feeling like a layer of air.

So the cause of the picture is not transparent:

1, the image of the dark part of the missing pixels.

2, the character's face is a bit dirty.

3, the whole picture lacks the color change.

4, the picture of the overall lack of saturation changes.

So our direction of improvement is:

1, by increasing the contrast or using the Curve tool to show the dark part of the screen.

2. Increase the brightness of the character's face.

3, for the screen to increase the color changes.

4, let the saturation of the screen has a gradual process.

The role of each step is to:

1, let the picture of the exposure distribution more evenly.

2, when a person's face looks more dirty, it is easy to remind people of the dirty air, we want to eliminate this psychological feeling.

3, We let the left side of the screen to add warm color, can explain the direction of the light in the environment, so that the screen light more unified, not clutter.

4, this step is in line with the previous step.

(should be more transparent than the original, right?)

Of course you can also try other ways.

In a word, there are ways to enhance the transparency of the screen:

1, improve the contrast of the picture.

2, improve the brightness of the screen.

3, improve the saturation of the screen.

4, improve the sharpness of the screen.

　5, unified picture of the light.

6, if there are characters in the picture, the face of the characters can not be too dirty, but also appropriate for the face to add some light sense.

7, pay attention to control the color of the screen. For example, high saturation areas can be artificially manufactured.

I want to make the photo transparent! Five key factors