CN112235911B

CN112235911B - Font size-based light ray adjusting method and apparatus, terminal device, and medium

Info

Publication number: CN112235911B
Application number: CN201910563360.5A
Authority: CN
Inventors: 徐杨
Original assignee: Guangdong Genius Technology Co Ltd
Current assignee: Guangdong Genius Technology Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2022-12-09
Anticipated expiration: 2039-06-26
Also published as: CN112235911A

Abstract

The invention discloses a method and a device for adjusting light based on font size, terminal equipment and a medium, relating to the field of terminal equipment, wherein the method comprises the following steps: acquiring a data image, wherein the data image comprises used data; extracting font size characteristics on used data from the data image; and adjusting the light brightness of the light source according to the light brightness range and the current brightness value corresponding to the font size characteristic. The invention can adaptively adjust the light brightness of the light source according to the character size of the character on the data used by the user, so that the user can process the own data under more proper light to see more clearly and achieve the aim of protecting eyes. In addition, the light brightness is automatically adjusted, manual adjustment of a user is not needed, the operation of the user is simplified, and the use experience of the user is greatly improved.

Description

Font size-based light ray adjusting method and device, terminal device and medium

Technical Field

The present invention relates to the field of terminal devices, and in particular, to a method and an apparatus for adjusting light based on font size, a terminal device, and a medium.

Background

The desk lamp is a product frequently used by a user when the user works and reads, and particularly a parent of a child can buy the desk lamp for the child when the child starts to write and draw, so that better illumination is provided for the child, and the eyesight of the child is protected.

In the existing traditional desk lamp, the light brightness of some desk lamps is not adjustable, namely, a user can only turn on the desk lamp or turn off the desk lamp; some table lamps have two levels of light brightness, and users need to click related buttons to adjust the light brightness.

For children, most of the time when the children use the desk lamp is during homework and reading, different subjects, different homework and different fonts used in different books can be different in size, and different light brightness is preferably provided for the children to have better reading experience and protect the eyesight of the children. If the traditional desk lamp with the non-adjustable light brightness is adopted, the aim of protecting eyes is difficult to achieve; the desk lamp capable of adjusting the light brightness needs to be manually adjusted by a user, and the operation is troublesome.

Disclosure of Invention

The invention aims to provide a light adjusting method and device based on font size, a terminal device and a medium, wherein the terminal device (namely an intelligent desk lamp) can automatically adjust the light brightness of a light source according to the font size, so that the terminal device not only provides proper light brightness, but also does not need manual participation of a user, and the use experience of the user is greatly improved.

The technical scheme provided by the invention is as follows:

a method for adjusting light based on font size includes the following steps: acquiring a data image, wherein the data image comprises used data; extracting the character size characteristic of the used data from the data image; and adjusting the light brightness of the light source according to the light brightness range and the current brightness value corresponding to the font size characteristic.

In above-mentioned technical scheme, the light brightness of light source can be adjusted according to the typeface size characteristic on the data that the user used to intelligence desk lamp adaptability, makes the user can handle the data of oneself under more suitable light, sees more clearly, reaches the purpose of eyeshield. In addition, the light brightness of the intelligent desk lamp is automatically adjusted, manual adjustment of a user is not needed, the operation of the user is simplified, and the use experience of the user is greatly improved.

Further, the method for extracting the font size characteristic of the used material from the material image comprises the following steps: extracting a font from the used data; measuring the length corresponding to the font; and matching to obtain corresponding font size characteristics according to the measured length.

In the technical scheme, the font size characteristic can be obtained by only measuring the length of one font, the operation speed is high, the light brightness of the light source can be adjusted in a quick and adaptive manner, and the use experience of a user is improved.

Further, the method for extracting the font size characteristics on the used materials from the material images comprises the following steps: extracting at least two fonts from the used data; measuring the length corresponding to each font and averaging to obtain an average length; and matching to obtain corresponding font size characteristics according to the average length.

In the technical scheme, the calculation of the average length can reduce large errors caused by the precision problem, can be suitable for data displayed by adopting various fonts with different sizes, and can improve the precision and the representativeness of the matched font size characteristics.

Further, the method also comprises the following steps: extracting character space characteristics corresponding to the font size characteristics on the used data from the data image; the adjusting the light brightness of the light source according to the light brightness range and the current brightness value corresponding to the font size characteristic further comprises the following steps: acquiring a corresponding light brightness range according to the font size characteristic and the character spacing characteristic; and adjusting the light brightness of the light source according to the light brightness range and the current brightness value.

In the technical scheme, when the light brightness of the light source is adjusted, the font size characteristic and the character spacing characteristic are considered at the same time, and the intelligent desk lamp can give appropriate light brightness pertinently.

Further, the method also comprises the following steps: extracting paragraph spacing features on the used material from the material image; the adjusting the light brightness of the light source according to the light brightness range and the current brightness value corresponding to the font size characteristic further comprises the following steps: acquiring a corresponding light brightness range according to the font size characteristic and the paragraph spacing characteristic; and adjusting the light brightness of the light source according to the light brightness range and the current brightness value.

In the technical scheme, the light brightness of the lamp source is adjusted by simultaneously considering the character size characteristic and the paragraph spacing characteristic, so that a user can obtain proper light brightness when watching different data, and the eye protection effect of the intelligent desk lamp is improved.

The present invention also provides a light adjusting device based on font size, comprising: the image acquisition module is used for acquiring a material image, and the material image comprises used materials; the characteristic extraction module is used for extracting the font size characteristic on the used data from the data image; and the brightness adjusting module is used for adjusting the light brightness of the light source according to the light brightness range and the current brightness value corresponding to the font size characteristic.

Further, the feature extraction module, configured to extract font size features on the used document from the document image, includes: the extracting submodule is used for extracting a font from the used data; the measuring submodule is used for measuring the length corresponding to the font; and the matching submodule is used for matching to obtain corresponding font size characteristics according to the measured length.

Further, the feature extraction module is further configured to extract, from the material image, a character pitch feature corresponding to the font size feature on the used material; the brightness adjusting module is configured to adjust the light brightness of the light source according to the light brightness range and the current brightness value corresponding to the font size characteristic, and further includes: the brightness adjusting module acquires a corresponding light brightness range according to the font size characteristic and the character spacing characteristic; and adjusting the light brightness of the light source according to the light brightness range and the current brightness value.

The present invention also provides a terminal device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the above-mentioned font-size-based ray adjustment methods when executing the computer program.

The present invention also provides a computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, implements the steps of any of the above-mentioned font-size-based ray adjustment methods.

Compared with the prior art, the light ray adjusting method and device based on font size, the terminal device and the medium have the beneficial effects that:

the invention can adaptively adjust the light brightness of the light source according to the character size characteristics on the data used by the user, so that the user can process the data under more proper light to see more clearly and achieve the aim of protecting eyes. In addition, the light brightness of the intelligent desk lamp is automatically adjusted, manual adjustment of a user is not needed, the operation of the user is simplified, and the use experience of the user is greatly improved.

Drawings

The foregoing features, technical features, advantages and implementations of a method and apparatus for adjusting light based on font size, a terminal device and a medium will be further described in the following description of preferred embodiments in a clearly understandable manner with reference to the accompanying drawings.

FIG. 1 is a flow diagram of one embodiment of a font-size-based ray adjustment method of the present invention;

FIG. 2 is a flow chart of another embodiment of a font-size-based ray adjustment method of the present invention;

FIG. 3 is a flow chart of another embodiment of a font-size-based ray adjustment method of the present invention;

FIG. 4 is a flow diagram of yet another embodiment of a font-size-based ray adjustment method of the present invention;

FIG. 5 is a schematic structural diagram of an embodiment of a terminal device of the present invention;

FIG. 6 is a schematic structural diagram of an embodiment of a font-size-based light adjustment apparatus according to the present invention.

The reference numbers illustrate:

6. the light ray adjusting device comprises a light ray adjusting device based on font size, 61 an image obtaining module, 62 a feature extracting module, 621 an extracting sub-module, 622 a measuring sub-module, 623 a matching sub-module, 63 a brightness adjusting module, 5 terminal equipment, 51 a memory, 52 a computer program and 53 a processor.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "a" means not only "only one of this but also a case of" more than one ".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

Fig. 1 shows a flowchart of an implementation of a light adjustment method based on font size according to the present invention, where the light adjustment method based on font size can be applied to an intelligent desk lamp, and the light adjustment method based on font size includes the following steps:

s101, a material image is obtained, and the material image comprises used materials.

Specifically, install the camera on the intelligent desk lamp, shoot the image that the user is looking up the data through the camera. The data includes: the carriers composed of characters such as books, exercises, newspapers, PPT, etc. are not limited to physical data, and can also display contents on electronic devices such as mobile phones, tablet computers, home education machines, etc.

As an embodiment, based on the limitation of the field angle of the camera, other interference factors may be included in the process of capturing the document image, for example: the hand, pen, desktop, etc. of the user only need to contain the used data in the data image, and these interference factors can be eliminated when the character size characteristic is subsequently extracted, and the extraction of the character size characteristic is not influenced.

For example: when a user sits beside a desk to write a mathematic operation, the camera on the intelligent desk lamp can shoot an image (namely a data image) of the writing operation of the user, and the image contains the content of the mathematic operation, so that the size characteristics of a subsequent font can be conveniently extracted.

For another example: the user sits and holds family's education machine and is browsing an article beside the desk, and the image that the user looked this article will be shot to the camera on the intelligence desk lamp, can contain the picture that shows this article on the family's education machine in the image, and the image that the camera was shot is the material image.

As another implementation mode, the camera on the intelligent desk lamp can automatically zoom, the picture is positioned to the data, and after most interference factors are eliminated, shooting is carried out to obtain a data image. Interference factors existing in data images shot by the zoom camera are few, and the speed of extracting the character size features can be improved.

S102 extracts a font size characteristic on the used document from the document image.

Specifically, after the intelligent desk lamp obtains the data image, the content of the used data in the data image is located, and the size of characters in the data content is extracted as the character size characteristic.

When extracting the font size feature, the acquired document image may be subjected to some pre-processing, for example: noise reduction, interference factor elimination and the like. And extracting font size characteristics from the preprocessed data image.

As an implementation manner, the step S102 of extracting the font size feature on the used material from the material image includes the following steps:

extracting a font from (a text paragraph of) the used data;

measuring the (actual) length corresponding to the font;

and matching to obtain corresponding font size characteristics according to the measured length.

Specifically, in general, most of the font sizes used on the same document are the same, which means that only the font size features occupying a large proportion of the same font can be extracted. Considering that there may be many characters on the used material, a font can be randomly extracted from the used material, and a font can also be (randomly) extracted from the character section.

Preferably, a font is selected to be extracted from the text passage. The fonts of the character paragraphs are mostly of the same type and size, the fonts are extracted from the character paragraphs, the size of the fonts adopted on the used data can be reflected at a high probability, the size characteristics of the fonts obtained subsequently can better represent the used data, and the reasonability of the adjusted light brightness is ensured.

The printed font has its specific size description, and some will use numbers, for example: four, small four, one, etc.; some will also be described in pounds, for example: 12 pounds, 16 pounds, 28 pounds, etc. There is a correspondence between the gauge and pound size, and they will all correspond to actual length dimensions, as shown in the following table:

watch 1

Number of	Pound number	Size (mm)
			Number one	28	9.841
Number two	21	7.381
			Number three	16	5.623
Fourth grade	14	4.920

The size of the font is a square specification, for example: the four-number font corresponds to 14 pounds, and the area specifications are as follows: 4.920 × 4.920mm, namely, the length and the width are equal, so that when the length is measured, only the length or the width of the font needs to be measured.

The actual length/width of the extracted font can be measured by adopting the existing technologies such as image recognition, a corresponding data list of the length/width and the font size can be stored in the preset database, and the measured length/width is matched in the preset database, so that the font size characteristic can be obtained. The font size characteristic is a specific description code number of the font size, such as: four, five, or alternatively, 14 lbs., 16 lbs, etc.

As an embodiment, the preset database may be stored locally in the intelligent desk lamp, and the query may be implemented without networking.

As another implementation, the preset database may be stored in the cloud server, so as to reduce the chance of occupying the local space of the intelligent desk lamp.

As another embodiment, the step S102 of extracting the font size feature on the used document from the document image includes the following steps:

extracting at least two fonts from (a text paragraph of) the used data;

measuring the (actual) length/width corresponding to each font and averaging to obtain an average length;

and matching to obtain corresponding font size characteristics according to the average length.

Specifically, in consideration of the accuracy of measuring the font length/width by using techniques such as image recognition, in this embodiment, a plurality of fonts are extracted from the used data, the length/width of each font is measured, the fonts are averaged to obtain an average length, and then the average length is matched to obtain the corresponding font size characteristic.

This embodiment can also be applied to a case where a plurality of different fonts are used for the data to be used, and particularly, the data of the outline class such as PPT, in order to distinguish the emphasis, different contents are often displayed using a plurality of fonts of different sizes, and therefore, when extracting the data displayed using the plurality of fonts, one, two, or a plurality of fonts are extracted from the display contents of the different fonts, respectively, the length/width is calculated, respectively, and then the average is calculated.

The average length can reduce large errors caused by precision problems, can also be suitable for data displayed by adopting fonts with different sizes, and can improve the precision and the representativeness of the matched font size characteristics.

It should be noted that, in any embodiment, the font size feature in the data list may be number, point size, or both, and is flexibly set according to actual needs, which is not limited herein.

In addition, considering the problem of measurement accuracy, an error value can be set during matching, and as long as the measured length or the calculated average length and a certain size in the data list do not exceed the error value, the two are considered to be successfully matched. The magnitude of the error value may be determined based on the accuracy of the measurement technique employed, and is not limited herein.

S103, adjusting the light brightness of the light source according to the light brightness range and the current brightness value corresponding to the font size characteristic.

Optionally, in step S103, adjusting the light brightness of the light source according to the light brightness range and the current brightness value corresponding to the font size characteristic includes the following steps:

judging whether the current brightness value is in the light brightness range corresponding to the font size characteristic;

when the current brightness value is not in the light brightness range, adjusting the light brightness of the light source to be in the light brightness range;

and if the current brightness value is within the light brightness range, the light brightness of the light source is not adjusted.

Specifically, each font size characteristic has a corresponding light brightness range, after the font size characteristic is obtained, whether the current brightness value of the intelligent desk lamp source is within the light brightness range is judged, if yes, the light brightness of the lamp source does not need to be adjusted, and if not, the light brightness of the lamp source needs to be adjusted to enable the light brightness to be within the light brightness range.

As an embodiment, the specific adjustment process is to adjust the light brightness of the light source according to a preset step value, for example: and setting the preset stepping value as 1, and adjusting 1 each time until the adjusted light brightness of the lamp source is within the light brightness range. Of course, the preset step value can also be set to other values, such as: 2. and 3, adaptively setting according to the set light brightness range.

For example: and obtaining the character size characteristics, wherein the corresponding light brightness range is 9-12, and the current brightness value is 10, so that the light brightness of the light source does not need to be adjusted.

For another example: the preset step value is set to 1, the font size characteristic is obtained, the corresponding light brightness range is 8-10, and the current light brightness is 7, the light brightness of the light source needs to be adjusted to 2 preset step values, and the preset step values are adjusted to 9, so that the preset step values are located in 9-10.

As another embodiment, the light brightness range may also be set, for example, as: the form 8-8 represents a specific light brightness value, and if the current brightness value is different from the value, the current brightness value is directly adjusted to the value.

For example: and (4) adjusting the light brightness of the light source to 7 if the light brightness range is 7-7 and the current brightness value is 8.

The setting of the light brightness range can simplify the calculation process in the process of adjusting the light source and improve the response speed of the intelligent desk lamp.

In this embodiment, the light brightness of the light source can be adaptively adjusted according to the character size characteristics of the characters on the data used by the user, so that the user can process the data under more suitable light, and can see the data more clearly, thereby achieving the purpose of protecting eyes. In addition, the light brightness of the intelligent desk lamp is automatically adjusted, manual adjustment of a user is not needed, the operation of the user is simplified, and the use experience of the user is greatly improved.

Based on the improvement of the above embodiment, fig. 2 shows a flowchart of an implementation of another font-size-based light adjustment method according to the present invention, where the font-size-based light adjustment method can be applied to an intelligent desk lamp, and the font-size-based light adjustment method includes the following steps:

s201, a material image is obtained, and the material image comprises used materials.

S202 extracts the font size feature on the used document from the document image.

S203, extracting character space characteristics corresponding to the font size characteristics on the used data from the data image.

Specifically, the character pitch feature refers to a pitch between two adjacent fonts. Under the condition that the sizes of the fonts are the same, the data with small space between two characters can be relatively labourious in the appearance of darker light.

Therefore, when the light brightness of the light source is adjusted according to the font size, the character space characteristics can be taken into consideration, so that the adjusted light brightness of the light source is more suitable, and the eye protection effect is improved.

The character space characteristics between two adjacent characters can be measured by the existing image recognition technology, the character space characteristics between two adjacent characters can be measured from the center points of the two adjacent characters, the character space characteristics between two adjacent characters can also be measured from the boundary line of the two adjacent characters, and the specific measurement mode is subject to the used recognition technology, and is not limited herein.

Adjusting the light brightness of the light source according to the light brightness range and the current brightness value corresponding to the font size characteristic comprises:

s204, acquiring a corresponding light brightness range according to the font size characteristic and the character spacing characteristic.

Specifically, the light brightness range set in the preset database needs to correspond to the font size characteristic and the character spacing characteristic.

For example: light brightness range 1, corresponding to font size features of 16-20 lbs, character spacing features of 0.5-0.8 lbs; light intensity range 2, corresponding to a font size characteristic of 8-18 pounds, and a character spacing characteristic of 0.3-0.4 pounds.

The numerical value of the specific character spacing characteristic is adaptively set according to the result of the spacing measurement method, the number or the point size is adopted for describing the font size characteristic, and the numerical value is adaptively set according to the actual use condition, which is not limited herein.

S205, adjusting the light brightness of the light source according to the light brightness range and the current brightness value.

For the implementation of the same parts in this embodiment as those in the above embodiment, reference may be made to the above embodiment, and details are not repeated herein.

In this embodiment, when the light brightness in adjustment lamp source, considered typeface size characteristic and character interval characteristic simultaneously, can let intelligent desk lamp pertinence give suitable light brightness, improve the use that the user used intelligent desk lamp and experience, further improve the eyeshield effect.

Fig. 3 is a flowchart illustrating an implementation of another font-size-based light adjustment method according to the present invention, where the font-size-based light adjustment method can be applied to an intelligent desk lamp, and the font-size-based light adjustment method includes the following steps:

s301, a material image is obtained, wherein the material image comprises used materials.

S302 extracts the font size feature on the used document from the document image.

S303 extracts the paragraph pitch feature on the material to be used from the material image.

Specifically, the paragraph spacing feature refers to the spacing between paragraphs, that is, the spacing between two adjacent lines of characters. When the spacing between lines of text is small, it appears to be laborious and requires a brighter light.

Therefore, when the light brightness of the light source is adjusted according to the font size, the paragraph interval characteristics can be taken into consideration, so that the adjusted light brightness of the light source is more suitable, and the eye protection effect is improved.

The paragraph interval characteristic between two lines of characters can be measured through the existing image recognition technology and other technologies, the paragraph interval characteristic in the vertical direction of two lines of characters can be measured from the center point of two adjacent lines of characters, the paragraph interval characteristic of two lines of characters can also be measured from the boundary line of two adjacent lines of characters, the specific measurement mode is subject to the used recognition technology, and the method is not limited herein.

s304, acquiring a corresponding light brightness range according to the font size characteristic and the paragraph spacing characteristic.

Specifically, the light brightness range set in the preset database needs to correspond to the font size feature and the paragraph pitch feature.

For example: light intensity range 1, corresponding to font size features of 16-20 lbs, paragraph spacing features of 20 lbs; light intensity range 2, corresponding to a font size characteristic of 8-18 pounds, and paragraph spacing characteristic of 22-26 pounds.

The numerical value of the specific paragraph spacing feature is adaptively set according to the result of the spacing measurement method, the number or the point size is used for describing the font size feature, and the numerical value is adaptively set according to the actual use condition, which is not limited herein.

S305, adjusting the light brightness of the light source according to the light brightness range and the current brightness value.

For the same parts in this embodiment as in any of the above embodiments, reference may be made to the above embodiments, and details are not repeated here.

In this embodiment, consider the light brightness that font size characteristic and paragraph interval characteristic come the adjustment lamp source simultaneously to make the user can both obtain suitable light brightness when seeing different data, improve the eyeshield effect of intelligent desk lamp.

Based on a variation of the third embodiment, fig. 4 shows another method for adjusting a light based on font size, which includes the following steps:

s401 acquires a material image including used material.

S402 extracts the font size feature on the used document from the document image.

S403, extracting character space characteristics corresponding to the font size characteristics from the used data from the data image.

S404, extracting the paragraph spacing feature on the used material from the material image.

S405, according to the font size characteristic, the character spacing characteristic and the paragraph spacing characteristic, obtaining a corresponding light brightness range.

S406, adjusting the light brightness of the light source according to the light brightness range and the current brightness value.

In the embodiment, the light brightness range is related to the font size characteristic, the character spacing characteristic and the paragraph spacing characteristic, and an appropriate light brightness range is found by considering the actual situation of the data used by the user globally, so that the light brightness corresponding to the data used by the user is provided for the user, the user can read and work under appropriate light, and the eye protection effect is ensured.

It should be understood that, in the foregoing embodiment, the sequence number of each step does not mean the execution sequence, and the execution sequence of each step should be determined by functions and internal logic, and should not constitute any limitation to the implementation process of the embodiment of the present invention.

Fig. 6 is a schematic diagram of the light adjustment device 6 based on font size provided in the present application, and only the relevant portions of the embodiment of the present application are shown for convenience of illustration.

The light adjusting device 6 based on font size may be a software unit, a hardware unit or a combination of software and hardware unit built in the intelligent desk lamp, or may be integrated into the intelligent desk lamp as an independent pendant.

The light adjusting apparatus 6 based on font size includes:

the image acquiring module 61 is used for acquiring a material image, which contains used material.

Specifically, the intelligent desk lamp is provided with the camera, and the image of the user looking up the data is shot through the camera. The data includes: the carriers composed of characters such as books, exercises, newspapers, PPT and the like are not limited to physical data, and can display contents on electronic equipment such as a mobile phone, a tablet computer, a home education machine and the like.

As an embodiment, due to the limitation of the angle of view of the camera, other interference factors may be included in the process of capturing the document image, such as: the user's hand, pen, desktop, etc. only need to include the used data in the data image, and these interference factors can be eliminated when the character size feature is subsequently extracted, and the extraction of the character size feature will not be affected.

As another implementation mode, the camera on the intelligent desk lamp can automatically zoom, and the picture is positioned to the data, and shooting is carried out after most interference factors are eliminated, so that a data image is obtained. Interference factors existing in data images shot by the zoom camera are few, and the speed of extracting the character size features can be improved.

And a feature extraction module 62, configured to extract font size features on the used document from the document image.

When extracting the font size feature, some pre-processing may be performed on the acquired data image, for example: noise reduction, interference factor elimination and the like. And extracting font size characteristics from the preprocessed data image.

As an embodiment, the feature extraction module 62, configured to extract the font size feature on the used material from the material image, includes:

the extracting sub-module 621 is configured to extract a font from (a text paragraph of) the used document;

a measuring sub-module 622 for measuring the (actual) length corresponding to the font;

and the matching sub-module 623 is used for matching according to the measured length to obtain a corresponding font size characteristic.

The printing font has its specific size description, and some will use numbers, for example: four, small four, one, etc.; some will also be described in pounds, for example: 12 pounds, 16 pounds, 28 pounds, etc. There is a correspondence between the gauge and pound, and they all correspond to actual length dimensions, as shown in table one above.

The font size is a square specification, for example: the four-number font corresponds to 14 pounds, and the area specifications are as follows: 4.920 x 4.920mm, namely the length and the width are equal, therefore, only the length or the width of the font needs to be measured when the length is measured.

The actual length/width of the extracted font can be measured by adopting the existing technologies such as image recognition, a corresponding data list of the length/width and the font size can be stored in the preset database, and the measured length/width is matched in the preset database, so that the font size characteristic can be obtained. The font size characteristic is a specific description code number of the font size, such as: four, five, or alternatively 14 pounds, 16 pounds, etc.

As another embodiment, the feature extraction module 62, configured to extract the font size feature on the used material from the material image, includes:

an extracting sub-module 621, configured to extract at least two fonts from (a text paragraph of) the used document;

a measuring submodule 622, configured to measure (actual) length corresponding to each font and average the measured (actual) length to obtain an average length;

and the matching sub-module 623 is configured to match the average length to obtain a corresponding font size characteristic.

This embodiment is also applicable to a case where a plurality of different fonts are used for the data to be used, and particularly, for the data of the outline class such as PPT, in order to distinguish the emphasis, different contents are often displayed using a plurality of fonts of different sizes, and therefore, when extracting such data displayed using a plurality of fonts, one, two, or a plurality of fonts can be extracted from the display contents of different types, respectively, and the length/width is calculated, respectively, and then averaged.

The average length can reduce the large error caused by the precision problem, can be suitable for the data displayed by adopting fonts with different sizes, and can improve the precision and the representativeness of the matched font size characteristics.

And the brightness adjusting module 63 is configured to adjust the light brightness of the light source according to the light brightness range and the current brightness value corresponding to the font size characteristic.

Optionally, the brightness adjusting module 63 is configured to adjust the light brightness of the light source according to the light brightness range and the current brightness value corresponding to the font size characteristic, where the adjusting the light brightness of the light source includes:

the brightness adjusting module 63 is configured to determine whether the current brightness value is within a light brightness range corresponding to the font size characteristic; when the current brightness value is not within the light brightness range, adjusting the light brightness of the light source to be within the light brightness range; and if the current brightness value is within the light brightness range, the light brightness of the light source is not adjusted.

As an embodiment, the specific adjusting process is to adjust the light brightness of the lamp source according to a preset step value, for example: and setting the preset stepping value as 1, and adjusting 1 each time until the light brightness of the adjusted light source is within the light brightness range. Of course, the preset step value can also be set to other values, such as: 2. and 3, adaptively setting according to the set light brightness range.

As another embodiment, the light brightness range may also be set, for example, as: the form 8-8 represents a specific light brightness value, and if the current brightness value is different from the value, the current brightness value is directly adjusted to the value. The setting of the light brightness range can simplify the calculation process in the process of adjusting the light source and improve the response speed of the intelligent desk lamp.

In this embodiment, the light brightness of lamp source can be adjusted according to the big small character of the typeface on the data that the user used to intelligent desk lamp adaptability, makes the user can handle the data of oneself under more suitable light, sees more clearly, reaches the purpose of eyeshield. In addition, the light brightness of the intelligent desk lamp is automatically adjusted, manual adjustment of a user is not needed, the operation of the user is simplified, and the use experience of the user is greatly improved.

Based on the improvement of the above device embodiment, another light adjusting device based on font size of the present invention comprises:

an image obtaining module 61, configured to obtain a material image, where the material image includes used material;

a feature extraction module 62, configured to extract font size features on the used document from the document image; extracting character space characteristics corresponding to the font size characteristics on the used data from the data image;

the brightness adjusting module 63 is configured to adjust the light brightness of the light source according to the light brightness range and the current brightness value corresponding to the font size characteristic, where the adjusting the light brightness of the light source includes:

the brightness adjusting module 63 is used for acquiring a corresponding light brightness range according to the font size characteristic and the character spacing characteristic; and adjusting the light brightness of the light source according to the light brightness range and the current brightness value.

The character space characteristics between two adjacent characters can be measured by the existing image recognition technology and other technologies, the character space characteristics of the two adjacent characters can be measured from the center points of the two adjacent characters, the character space characteristics of the two adjacent characters can also be measured from the boundary line of the two adjacent characters, and the specific measurement mode is subject to the used recognition technology, and is not limited herein.

The light brightness range set in the preset database needs to correspond to the font size feature and the character spacing feature.

For the implementation of the same parts in this embodiment as those in the above device embodiment, reference may be made to the above embodiment, and details are not repeated herein.

The present invention further provides another embodiment of a light adjustment apparatus based on font size, including:

a feature extraction module 62, configured to extract font size features on the used document from the document image; and the paragraph spacing characteristics on the used material are extracted from the material image;

the brightness adjusting module 63 is used for acquiring a corresponding light brightness range according to the font size characteristic and the paragraph spacing characteristic; and adjusting the light brightness of the light source according to the light brightness range and the current brightness value.

The paragraph spacing characteristics between two lines of characters can be measured by the existing image recognition technology and other technologies, the paragraph spacing characteristics in the vertical direction of two lines of characters can be measured from the center points of two adjacent lines of characters, the paragraph spacing characteristics of two lines of characters can also be measured from the boundary lines of two adjacent lines of characters, the specific measurement mode is based on the used recognition technology, and the measurement mode is not limited herein.

The light brightness range set in the preset database needs to correspond to the font size feature and the paragraph pitch feature.

The specific paragraph spacing characteristic value is adaptively set according to the result of the spacing measurement method, the font size characteristic description adopts number or pound number, and the method is adaptively set according to the actual use condition, and is not limited herein.

For the embodiments of the same parts in this embodiment as those in any of the above device embodiments, reference may be made to the above embodiments, and further description thereof is omitted here.

In this embodiment, consider font size characteristic and paragraph interval characteristic simultaneously and adjust the light brightness of lamp source to make the user can both obtain suitable light brightness when seeing different data, improve the eyeshield effect of intelligent desk lamp.

Based on the variation of the third embodiment of the apparatus, in another embodiment of the present invention, the apparatus for adjusting light based on font size includes:

a feature extraction module 62, configured to extract font size features on used data from the data image; extracting character space characteristics corresponding to the font size characteristics on the used data from the data image; extracting paragraph spacing characteristics on the used material from the material image;

the brightness adjusting module 63 is configured to obtain a corresponding light brightness range according to the font size feature, the character interval feature, and the paragraph interval feature; and adjusting the light brightness of the light source according to the light brightness range and the current brightness value.

In this embodiment, the light brightness range has a relationship with the font size characteristic, the character spacing characteristic, and the paragraph spacing characteristic, and an appropriate light brightness range is found by considering the actual situation of the data used by the user from the whole situation, so as to provide the user with the light brightness corresponding to the data used by the user, so that the user can read and work under appropriate light, and the eye protection effect is ensured.

It will be apparent to those skilled in the art that, for convenience and simplicity of description, the above division of the program modules is merely used as an example, and in practical applications, the above distribution of functions may be performed by different program modules according to needs, that is, the internal structure of the apparatus may be divided into different program units or modules to perform all or part of the above-described functions. Each program module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one processing unit, and the integrated unit may be implemented in a form of hardware, or may be implemented in a form of software program unit. In addition, the specific names of the program modules are only used for distinguishing one program module from another, and are not used for limiting the protection scope of the application.

Fig. 5 is a schematic structural diagram of a terminal device 5 provided in an embodiment of the present invention, and the terminal device is an intelligent desk lamp. As shown in fig. 5, the terminal device 5 of the present embodiment includes: a processor 53, a memory 51 and a computer program 52 stored in said memory 51 and executable on said processor 53, such as: and (5) performing a light ray adjusting procedure. The processor 53 executes the computer program 52 to implement the steps in the foregoing respective embodiments of the font-size-based light adjustment method, or the processor 53 executes the computer program 52 to implement the functions of the respective modules in the foregoing respective embodiments of the font-size-based light adjustment apparatus.

The terminal device 5 may include, but is not limited to, a processor 53 and a memory 51. Those skilled in the art will appreciate that fig. 5 is merely an example of a terminal device and does not constitute a limitation of terminal device 5, and may include more or fewer components than shown, or some components in combination, or different components, such as: the terminal devices may also include input output devices, display devices, network access devices, buses, and the like.

The Processor 53 may be a Central Processing Unit (CPU), or may be another general-purpose Processor, a Digital Signal Processor (Digital Signal Processor,

DSP), application Specific Integrated Circuit (ASIC), field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 51 may be an internal storage unit of the terminal device 5, such as: hard disk or memory of the terminal device. The memory may also be an external storage device of the terminal device, such as: the terminal equipment is provided with a plug-in hard disk, an intelligent memory Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) and the like. Further, the memory 51 may also include both an internal storage unit and an external storage device of the terminal device 5. The memory 51 is used for storing the computer program 52 and other programs and data required by the terminal device 5. The memory may also be used to temporarily store data that has been output or is to be output.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or recited in detail in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal device (i.e. intelligent desk lamp) and method may be implemented in other ways. For example, the above-described apparatus/terminal device embodiments are merely illustrative, and for example, the division of the modules or units is only one type of logical function division, and other division manners may be available in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by sending instructions to relevant hardware through a computer program, where the computer program may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises: computer program code which may be in the form of source code, object code, an executable file or some intermediate form, or the like. The computer-readable storage medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the content of the computer-readable storage medium can be increased or decreased according to the requirements of the legislation and patent practice in the jurisdiction, for example: in certain jurisdictions, in accordance with legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunications signals.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A method for adjusting light based on font size, comprising the steps of:

acquiring a material image, wherein the material image comprises used materials;

extracting the character size characteristic of the used data from the data image; extracting character space characteristics corresponding to the font size characteristics on the used data from the data image;

acquiring a corresponding light brightness range according to the light brightness range and the current brightness value corresponding to the font size characteristic and the character space characteristic;

and adjusting the light brightness of the light source according to the light brightness range and the current brightness value.

2. The method as claimed in claim 1, wherein the extracting the font size characteristic of the used data from the data image comprises:

extracting a font from said used material;

measuring the length corresponding to the font;

3. The method as claimed in claim 2, wherein the extracting the font size characteristic of the used data from the data image comprises:

extracting at least two fonts from the used data;

measuring the length corresponding to each font and averaging to obtain an average length;

4. The method for adjusting a font-size-based light ray according to claim 1, further comprising the steps of:

extracting paragraph spacing features on the used material from the material image;

the adjusting the light brightness of the light source according to the light brightness range and the current brightness value corresponding to the font size characteristic further comprises the following steps:

acquiring a corresponding light brightness range according to the font size characteristic and the paragraph spacing characteristic;

5. A light adjustment device based on font size, comprising:

the image acquisition module is used for acquiring a material image, and the material image comprises used materials;

the characteristic extraction module is used for extracting the font size characteristic on the used data from the data image; the character space characteristic corresponding to the character size characteristic on the used data is further extracted from the data image;

and the brightness adjusting module is used for acquiring a corresponding light brightness range according to the light brightness range and the current brightness value corresponding to the font size characteristic and the character spacing characteristic, and adjusting the light brightness of the light source according to the light brightness range and the current brightness value.

6. The apparatus as claimed in claim 5, wherein the feature extraction module for extracting the font size feature on the used material from the material image comprises:

the extraction submodule is used for extracting a font from the used data;

the measuring submodule is used for measuring the length corresponding to the font;

and the matching submodule is used for matching to obtain the corresponding font size characteristic according to the measured length.

7. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the font-size based ray adjustment method according to any one of claims 1 to 4 when executing the computer program.

8. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out the steps of the font-size based ray adjustment method according to any one of claims 1 to 4.