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In recent years, artificial intelligence has developed rapidly, especially human face recognition technology, is increasingly widely used in daily life. After entering the 21st century, China Electronic Technology has developed rapidly in just decades, and it is inseparable from the promotion of scientific and technological talents. From human beings enter the steam era, then go to the electrical age, human beings have begun to develop rapidly, and science and technology enters the era of large bombings. Technical application makes us live more fast, efficient, intelligent.

Today mainly introduces people’s face recognition technology, face recognition system has a wide range of applications: face recognition, face recognition, banned tarthen system, face recognition monitoring management, face recognition computer security, face recognition photo search , Face recognition, registration, face recognition ATM wit, video alarm system, face recognition prison intelligent alarm system, face recognition RFID intelligent customs clearance system, face recognition public security criminal pursuit of intelligent alarm system and so on. If the Alipay brush is paid, the "safe city" built by the public security is arrested in the escape criminals, brushing the face into the community, etc. is the application of face recognition technology.

Scope of application: park, factory, supermarket, community square, conference center, sports venue, school, hospital, residential area, commercial street, large-scale farm market, etc. Important parts, hotels, restaurants, catering, entertainment venues Monitoring recording purposes for indoor and outdoor surveillance of the lobby entrance, elevator and other major channels.

Face capture and tracking

Face capture refers to a frame in a frame of an image or video stream and separating portraits from the background and saves it automatically. Portrait tracking refers to the use of portrait capture techniques that automatically tracks it when the specified portrait is moving within the range of the camera.

Face recognition alignment

Face recognition is divided into two comparisons and search formulas. The verification is that the portraits of the captured or the specified portrait have been logged in the database. Remember that a certain object is determined to be the same person. Searching comparison means searching for searching for a specified portrait from all portions registered in the database.

Face modeling and search

The system can model the portable data of the library to extract the characteristics of the face and save it into the database (face feature file) to the database. When performing a face search (search formula), the specified portrait is modeled, and it will be identified compared to the templates of all people in the database, and ultimately list the most similar person according to the compared similar value. List.

Authorization | Huangshan first painting

Part 1: Type of typography

The type of works of the works can be roughly divided into parallel type, slanted, full version, free type, symmetrical, left and right divided, up and down, gravity, detail, background type.

01 / sided form

The elements perform a differential arrangement of different positions, and the screen has relatively symmetrical feeling by both connection and different elements.

Scheduled application

Picture application

Product typesetting application

Squiry in parallelized multi-use for pictures and product color, material research analysis, etc.

02 / slide typesetting

Type elements and texts in the shape of a curve, or tilt the picture, so that the layout exhibits unstable visual sensation, and the overall is more rhyme.

Scheduled application

Photo application

Product typesetting application

03 / full version

The text is placed on the image on the arranging, which can be placed in the middle, or it can be placed in the middle, but also intersect, but there must be a certain logic.

Full version of the application

Full version of the product typography

Full version of the graphic version

04 / free form

There is no regular typography, the layout is very lively, to avoid the integrity of the typography, incomplete.

Do not recommend product typography

05 / Symmetrical Form

Give human rationality, the feeling of work, but avoid the visual sensation of the dead plate.

Symmetric form application

06 / left

The layout is divided into two parts, the layout of the balance, forming a strong comparison effect, wearing the text, making the layout more coordinated.

Application of left and right divided layout

Photo application

Applications

07 / up and down segmentation

The layout is divided into two parts, the picture can be a single can also be a single, highlighting the energetic atmosphere, the text is light and free, you can write it.

Up and down segmentation is easy to operate, text and content can be discharged from the layout for the vertical version.

Application of up and down partial layout

Photo application

Applications

08 / gravity form

The entire layout has a focus and highlights the visual focus.

Cardiological form layout application

Applications

Photo application

09- Detail form

Highlight the material and function of the product through the magnification of the product details. Enhance the visual effect of the picture.

Detail form layout application

Applications

10 / background form

Place the product in the background template environment.

Applications

Background form layout application

Part II: Tips

Type of skills can be roughly divided into four types, text skills, lend white skills, graphic skills, color skills.

01 / font skill

Select the most comfortable font size

The font size of the font size has a relatively regular magnification, that is, 0.5 times relationship growth

Select the level of the font

Multiple family text information block processing relationship, visual experience between different locations, text blocks, pay attention to the comfort of the font spacing and the line spacing.

Select the level of the font

Different dimensional texts on the above visual experience.

Font selection

Understand the character of the font, avoid using the default font to avoid using the transition to use and ugly fonts, pay attention to avoid simultaneous use of both fonts and two or more different colors.

Font selection

Pay attention to the readability of the text, do not leave a lonely word, use small uppercase letters and carefully use the text of the text.

02 / Dossy Tips

What is a white?

Even if we call it "white", it does not mean that the actual space must be white.

As long as you don’t repeat any graphics or elements on the page. It originates from traditional art, which is originally the difference in the shape of the user more accurately.

Dossy is a space between each element and the surrounding space. When the designer talks about the white: they are actually negative space.

The word "negative space" originated in conflict, blank spaces can be filled with any color. The actual white and "留 白" "negative space" did not really associate, "darker" and "negative space" can be used interchangeably.

Do you want to leave?

Dossy is the basic element of the design, leaving a white simply is a premeditated guidance reader to capture the information necessary to express the information.

And improve the visual feeling of reading.

In the layout of the work set, there is enough space to reserve enough space, do not let information are too stacked, accounting for full space. Too many information will directly lead to a decrease in the interest of the examiner, and a slightly sparse version of the typography will make reading more comfortable.

Picture with text

Dossy is a simple art. You don’t have to pursue information on the page and drawings. Appropriate leaves give people a reading rest, and you can also cause unlimited imagination.

03 / graphic skills

A / Emphasize graphic comparison, increasing visual readability

Using contrast color and complementary color, enhance the readability of information, select the main color according to the subject, and use another color to match the decoration, produce visual tension, attract reading readers.

A

B

B / Weak background

Weak background, fuzzy color reduces the level of reading order,

Highlight design destination visuality and information readability,

The weakening of the background, the convexity of the text will make information reading more visual impact.

A

B

Weak background, emphasizing information.

C / segmentation geometry screen

Add a rectangular boundary box other than the text or set a color block under text, forming a product label, and the relationship is generated by the background and label, allowing the user to focus on the geometry.

Through the segmentation of the geometric frame, the reader’s vision center is focused on the information points within the frame.

D / gold segmentation skills

Gold segmentation: The ratio of the shorter portion of the line segment is equal to the longer portion and the overall length ratio, and its ratio is about 0.618.

A

B

Layout: Set the size into a gold segmentation ratio.

Rebum: Use the gold segmentation ratio to control the white space.

Content: Try to utilize the proportion of gold.

04 / color skills

A / contrast color

Two colors of the 12 color phase rings are 120 ° color. The matching method of the color color can generally use the color of the picture very jumped. It is now much more than sports products.

B / same color

Then there are two colors of the 12 color phase rings in the color of 30 °. Use the similar color on the product to enhance the overall feeling of the picture.

C / complementary color

The distance between the two colors in the 12-color ring is 180 ° color. The complementary color is exaggerated, and the visual impact is very strong.

D / neighboring color

The distance between the two colors in the 12 color phase ring is 60 ° color. The neighboring color is a relaxed feeling.

Co-like – then two colors of the two colors in the 12-color rings in the color of 30 °. Use the similar color on the product to enhance the overall feeling of the picture.

Complementary Color – The distance between the two colors in the 12-color ring is 180 ° color. The complementary color is exaggerated, and the visual impact is very strong.

Neighborhood – The distance between the two colors in the 12-color ring is 60 ° color. The neighboring color is a relaxed feeling.

Color of the golden rule – 6: 3: 1

The main color is a proportion of 60%, and the secondary color is 30% ratio, and the auxiliary color is a 10% ratio. Generally, the color of the color of the color is followed in the product color matching.

6: 3: 1

Color golden law is reflected in the product

Children’s products generally use multiple colors or irregular use of colors

finally

You can follow this or a certain way to type and layout, but the products and rhythm of each person are different, so everyone finds the style and typography of our products. It is also important.

Every year-end or holiday, Microsoft founder Bill Gates Bill Gates will continue their "book selection" in the traditional personal social media platforms, recommended books of the year list of books he had in mind for everyone.

Not long ago, Bill Gates once again to share with you the five books, compared with previous years of books, five book clear "Technology sense of" full, contains two great science fiction, and discuss the future development of technology books let us work together to preview it!

Klara and the Sun

– Kazuo Ishiguro

This is caused by

The Nobel Prize in Literature

Winner Kazuo Ishiguro newly published science fiction story takes place in a dystopian future,

It tells the story of the friendship between the generated artificial intelligence robot Clara with a sick little girl.

Gates Book Review – "

Power is not evil robot

Instead, they can serve as companions to accompany people. This book got me thinking, has a super intelligent robot lives will be like – we had them as a technology, or

More important things

. "

Project Hail Mary

– Andy Weir

Project Hail Mary from the "Mission to Mars" The Marsian author Andy Weir (Andy Weir) hand, and "Mission to Mars" This book also appeared in the 2020 Bill Gates

Summer reading list

superior. It tells the story of a high school science teacher awoke to find himself in another galaxy,

Also take up the task of lifting the earth crisis.

Gates Book Review – "The story is about how he uses science and engineering to

save the world

. This book is very interesting, I’ll read it all weekend. "

Hamnet

– Maggie O’Farrell

This year, Bill Gates is recommended only a single book

Historical novel

The author wrote it with a fictional way how sad tear a family, explain how Shakespeare was writing his sorrow into power.

Gates Book Review – "If you’re a fan of Shakespeare, you’ll love this touching novel,

It tells the story of Shakespeare’s personal life affect the creation of one of his most famous plays.

"

A

Thousand Brains: A New Theory of Intelligence

– Jeff Hawkins

From technology entrepreneurs Hawkins (Jeff Hawkins) this book

More superficial

Way to introduce the sophisticated mode of operation of the human cerebral cortex,

More imagination and provides clues for the future of machine learning and artificial intelligence.

Gates Book Review – "Hawkins identity may be best known for co-inventor of the PalmPilot, but he spent a few years time to study

Neuroscience and machine learning

The link between this book is the best introduction to his thought. "

The Code Breaker: Jennifer Doudna, Gene Editing, and the Future of the Human Race

– Walter Isaacson

It was awarded in 2020

Nobel Prize in Chemistry

Jennifer Doudna biography of the story,

She was "God scalpel said," the CRISPR gene editing technology has attracted attention.

Gates Book Review – "CRISPR gene editing system over the past decade

Coolest, perhaps most importantly,

One scientific breakthroughs. This book is about the Nobel laureate biochemist Jennifer Doudna and her colleagues is how to find it.

Author Isaacson nicely highlights the most important ethical issues in genetic editing.

"

Work temperature is 30 ° C, and the amount of carrier flow under the long-term continuous 90% load is as follows:

1.5 square millimeters – 13A

2.5 square millimeters – 26A
4 square millimeters – 32A

6 square millimeters – 47A
16 square millimeters – 92A

25 square millimeters – 1220A

35 square millimeters – 150A

Current conversion power:

1A=220W,

10A=2200W,

So on and so forth.

For example, if the carrier traffic is 14A, it is: 220W × 14=3080W, then 1.5 square copper wire power is 3.08 kW.

Long-term current allowed by national standard:

4 square is 25-32A

6 square is 32-40A

In fact, these are the theoretical security values, and the limit value is more than these.

The maximum power allowed by the 2,5 square copper wires is: 5500W.

4 square 8000W, 6 square 9000W is no problem.

40A’s digital meter is normal 9000W absolutely no problem. The 12000W of the machine will not be burned.

03

Copper wire wires allow long-term current:

2.5 square millimeters (16A ~ 25A)
4 square millimeters (25A ~ 32A)
6 square millimeters (32A ~ 40A)

for example :

1. Each computer consumes approximately 200 ~ 300W (about 1 to 1.5a), then 10 computers need a 2.5-square millimeter copper wire power supply, otherwise a fire may occur.

2, the large 3 air conditioner consumption is approximately 3000W (about 14a), then one air conditioner requires a separate 2.5 square millimeter copper wire power supply.
3, the current housing outlet is generally 4 square millimeters of copper wire, so the home appliances open at the same time must not exceed 25A (ie 5500 watts), some people replace the wires in the house to 6 square millimeters copper wires are useless. Because the wires entering the meter are 4 square millimeters.
4. Early housing (15 years ago) The import line is generally 2.5 square millimeter aluminum wire, so the home appliances open at the same time must not exceed 13A (ie 2800 watts).

5, household appliances that are relatively large consumption are: air conditioner 5a (1.2), electric water heater 10a, microwave oven 4a, rice cooker 4a, dishwasher 8a, drying machine 10a with drying function, electric heater 4a.

Among the fire caused by the power supply, it is due to the heat of the hair, so all the joints must be welded, and the contact devices that cannot be welded 5 to 10 years must be replaced (such as socket, air switch, etc.).

04

Copper wire wire cable traffic standard cable flow oral estimation:

Take the next two o’clock in nine, and go to the next time.

Thirty-five take three o’clock, double bunom group is five.

The conditions have changed, and the high temperature is 10% off copper upgrade.

The number of tube is two or three four and eight seven six folds.

illustrate:

This mouth is not directly pointed out to various insulated lines (rubber and plastic insulation lines), but "cross-section is multiplied in a certain number" to be represented.

"Two five-point multiply by nine, go to the next time," said that various cross-sectional aluminum insulation lines of 2.5mm2 and below are about 9 times the number of carriers of the cross-section. Such as 2.5mm2 wires, the carrier flow is 2.5 × 9=22.5 (a). The multiple relationship between the carriage of 4mm2 and more wires and the number of cross-section is row, the line number is row, the multiple is successively reduced by 1, i.e., 4 × 8, 6 × 7, 10 × 6, 16 × 5, 25 × 4.

"Thirty-five Take Three Fiveth, Double Bunction] Say", it is said that 35mm2 lead traffic is 3.5 times the number of cross-section, ie 35 × 3.5=122.5 (a). Wire from 50 mm 2 and above, the multiple relationship between the amount of carrier flow and the number of cross-section becomes a set of two two lines, and the multiple is 0.5. That is, 50, 70mm2 wire has a total of 3 times the number of cross-section; 95, 120 mm2 lead traffic is 2.5 times the number of cross-sectional area, and push it according to the secondary.

"Conditions have changed, high temperature nine fold copper upgrades". The above mouth is the copper core insulation line, which is determined under the condition of 25 ° C in ambient temperature. If the aluminum core insulation line is in the area where the ambient temperature is higher than 25 ° C, the wire carrier flow can be calculated according to the above-mentioned oral calculation method, and then hits it again; when used is not an aluminum wire but the copper core insulation line, Its carrier flow is slightly larger than the same size aluminum wire, and can calculate a carrier flow than the aluminum wire in the above-mentioned oral method. For example, the flow of 25mm2 copper wire can be calculated according to 25 mm2 aluminum wire.

Tips

● Electrician advanced information package:Wiring diagram, electrical identification, e-book, PPT …