Display method for recommending eyebrow style and electronic apparatus thereof

This application claims the priority benefit of Chinese application serial no. 201710768327.7, filed on Aug. 31, 2017. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.

The invention relates to a display method for recommending an eyebrow style and an electronic apparatus thereof.

During a make-up process, most people usually “trim” eyebrows to make their eyebrow styles more suitable for their own face types. However, most people are unable to effectively and clearly know their own face types and thus, cannot obtain ideal eyebrow styles for themselves according to their own face types. Therefore, how to effectively and clearly know a face type of a person and a recommended eyebrow style corresponding thereto is one of the issues to be solved by those skilled in the art.

The invention provides a display method for recommending an eyebrow style, by which a corresponding recommended eyebrow style may be displayed on an eyebrow area of a human face according to a face type of the human face in an image.

A display method for recommending an eyebrow style is provided. The display method includes: obtaining an image; determining a face type of a human face in the image; obtaining a corresponding recommended eyebrow style according to the face type of the human face in the image; and displaying the recommended eyebrow style in an eyebrow area of the human face in the image.

An electronic apparatus including a storage unit and a processing unit is provided. The storage unit is configured to store a plurality of modules. The processing unit is configured to access and execute the modules stored by the storage unit. The modules include an image obtaining module, a face type determination module, a recommended eyebrow style obtaining module and a display module. The image obtaining module obtains an image. The face type determination module determines a face type of a human face in the image. The recommended eyebrow style obtaining module obtains a corresponding recommended eyebrow style according to the face type of the human face in the image. The display module displays the recommended eyebrow style in an eyebrow area of the human face in the image.

Based on the above, in the display method for recommending the eyebrow style provided by the invention, the corresponding recommended eyebrow style can be displayed in the eyebrow area of the human face according to the face type of the human face in the image. Thereby, the user can clearly know the ideal eyebrow style corresponding to his/her face type and correspondingly trim the eyebrows according to the displayed image, so as to improve the efficiency and convenience during make-up.

In order to make the aforementioned and other features and advantages of the invention more comprehensible, several embodiments accompanied with figures are described in detail below.

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic block diagram illustrating an electronic apparatus according to an embodiment of the invention.

FIG. 2 is a schematic diagram illustrating corresponding relationships between face types and eyebrows according to an embodiment of the invention.

FIG. 3 is a flowchart illustrating a display method for recommending an eyebrow style according to an embodiment of the invention.

FIG. 4 is a schematic diagram of analyzing a human face in an image according to an embodiment of the invention.

FIG. 5 is a flowchart of determining a face type of a human face according to an embodiment of the invention.

FIG. 6A and FIG. 6B are schematic diagrams of determining positions for superposing the recommended eyebrow style according to an embodiment of the invention.

FIG. 7A and FIG. 7B are schematic diagrams of determining a display manner of the recommended eyebrow style according to an embodiment of the invention.

FIG. 8 is a schematic diagram of a display result of displaying the recommended eyebrow style according to an embodiment of the invention.

FIG. 9 is a flowchart illustrating a display method for recommending an eyebrow style according to an embodiment of the invention.

FIG. 1 is a schematic block diagram illustrating an electronic apparatus according to an embodiment of the invention. Referring to FIG. 1 , an electronic apparatus 1000 at least includes a processing unit 100 and a storage unit 120 , and the processing unit 100 is coupled to the storage unit 120 , but the invention is not limited thereto. In an embodiment of the invention, the electronic apparatus 1000 may be a server, a smart mobile apparatus, a desktop computer, a notebook computer, a workstation, a personal digital assistant (PDA) or the like, but the invention is not limited thereto.

The processing unit 100 may be a central processing unit (CPU), or other programmable general purpose or special purpose microprocessor, digital signal processor (DSP), programmable controller, application specific integrated circuit (ASIC) or other similar devices or a combination of the above devices.

The storage unit 120 may be any stationary or mobile random access memory (RAM), read-only memory (ROM), flash memory, similar devices or a combination of the aforementioned devices.

In the present exemplarily embodiment, the storage unit 120 of the electronic apparatus 1000 stores a plurality of programming code segments. The programming code segments, after being installed, are executed by the processing unit 100 . For example, the storage unit 120 stores a plurality of modules including, for example, an image obtaining module 121 , a face type determination module 123 , a recommended eyebrow style obtaining module 125 and a display module 127 . Various operations applicable to the electronic apparatus 1000 may be performed by these modules, and each module is composed of one or multiple program code segments. It should be noted that the storage unit 120 in the above described embodiment is not limited to a single memory device, and each of the modules may also be separately stored in two or more memory devices of the same type of different types. In other embodiments of the invention, the modules may further be respectively implemented by specific circuit structures, for example.

In an embodiment of the invention, the electronic apparatus 1000 further includes devices, such as input/output (I/O) interfaces (not shown) and communication interfaces (not shown), but the invention is not limited thereto. In detail, the I/O interfaces include a display, a speaker, a keyboard, a mouse and a touch panel used for outputting or inputting information or data. On the other hand, the communication interfaces comply with various wired communication standards and wireless communication stands, through which the electronic apparatus 1000 may be connected with other apparatuses.

A display method for recommending an eyebrow style provided by embodiments of the invention may be implemented in the electronic apparatus 1000 illustrated in FIG. 1 . Several embodiments will be provided below to describe the method set forth above with reference to the electronic apparatus 1000 illustrated in FIG. 1 . It should be noted that the display method for recommending the eyebrow style is not limited to be implemented in the electronic apparatus 1000 , and other electronic apparatuses or systems with the corresponding capability may embody the aforementioned analysis method in the same way.

FIG. 2 is a schematic diagram illustrating corresponding relationships between face types and eyebrows according to an embodiment of the invention. Referring to FIG. 2 , an eyebrow may be mainly divided into three feature points, i.e., a “brow head”, a “brow arch” and a “brow end”. The “brow head” refers to a feature point of the eyebrow which is the closet to the nose bridge and is represented by a square in FIG. 2 . The “brow arch” represents the highest point of the curve of the eyebrow and is represented by a circle in FIG. 2 . The “brow end” mainly refers to a feature point of the end of the eyebrow and is represented by a triangle in FIG. 2 .

Generally, a face type may correspond to an ideal eyebrow style. For example, in FIG. 2 , a shape of a human face 22 a is a diamond shape, and an ideal eyebrow style corresponding thereto is a shape of an eyebrow 20 a . The eyebrow 20 a pertains to parallel lines, and a length of the eyebrow 20 a slightly exceeds an eye end. Specially, in a scenario where the face type of the human face is a diamond shape, the eyebrows generally has to avoid obvious “brow arches”. Therefore, the eyebrow 20 a do not have a feature point of a brow arch. In another example, a shape of a human face 22 b is an oval shape, and an ideal eyebrow style corresponding thereto is a shape of an eyebrow 20 b . The eyebrow 20 b pertains to an eyebrow in a standard shape, and a brow end of the eyebrow 20 b is slightly higher than a brow head. In addition, eyebrow styles corresponding to various face types of a human face 22 c to a human face 22 f are illustrated as an eyebrow 20 c to an eyebrow 20 f , which are no longer repeatedly described. Specially, in a display method for recommending an eyebrow style of the invention, the eyebrow styles of the eyebrow 20 a to the eyebrow 20 f may be stored in advance in the storage unit 120 , and after the electronic apparatus 1000 determines a shape of a human face in an output image, a corresponding eyebrow style are superposed and displayed on an eyebrow area of the human face in the output image, thereby achieving display in augmented reality (AR) and allowing a user to know a best matched eyebrow style for his/her own face type.

FIG. 3 is a flowchart illustrating a display method for recommending an eyebrow style according to an embodiment of the invention.

Referring to FIG. 3 , in step S 301 , an image including a human face may be obtained by the image obtaining module 121 , and a human face type in the image may be determined by the face type determination module 123 .

Specifically, FIG. 4 is a schematic diagram of analyzing a humanface in an image according to an embodiment of the invention. FIG. 5 is a flowchart of determining a face type of a human face according to an embodiment of the invention. Referring to FIG. 4 and FIG. 5 simultaneously, after the image obtaining module 121 obtains an image 400 including a human face, the face type determination module 123 may analyze the human face in the image 400 by using a plurality of auxiliary lines, thereby determining a face type of the human face in the image 400 . Specifically, the face type determination module 123 defines an auxiliary line L 1 (which is also referred to as a first auxiliary line), an auxiliary line L 2 (which is also referred to as a second auxiliary line), an auxiliary line L 3 (which is also referred to as a third auxiliary line), an auxiliary line L 4 (which is also referred to as a fourth auxiliary line), an auxiliary line L 5 (which is also referred to as a fifth auxiliary line), a hairline L 6 and a tangent line L 7 in the human face in the image 400 .

The auxiliary line L 1 is a horizontal line passing through brow ends of two eyebrows (which are collectively referred to as an eyebrow area) in the image 400 . The auxiliary line L 2 is a horizontal line passing through oral commissures of the human face in the image 400 . The auxiliary line L 3 is a horizontal line tangent to the lower lip of the human face in the image 400 and having two ends respectively terminating in the cheeks of two sides of the human face in the image 400 . The auxiliary line L 4 is a horizontal line with a distance e 1 (which is also referred to as a second distance) to a hairline L 6 of the human face in the image 400 , a distance e 2 (which is also referred to as a third distance) to the auxiliary line L 1 and two ends respectively terminating in two sides of the forehead of the human face in the image 400 . In the present exemplarily embodiment, a ratio of the distance e 1 to the distance e 2 is ½(which is also referred to as a third preset value). Namely, the ratio of the distance e 1 to the distance e 2 is 1:2. However, it should be noted that the invention is not intent to limit the ratio of the distance e 1 to the distance e 2 .

The auxiliary line L 5 (which is also referred to as a fifth auxiliary line) is a horizontal line tangent to lower edges of the eyes of the human face in the image 400 and having two ends respectively terminating in the cheeks of the two sides of the human face in the image 400 . In addition, the face type determination module 123 further obtains an included angle θ between a tangent line L 7 which is tangent to the cheek of one side of the human face in the image 400 and the cheek of the human face. The tangent line L 7 and the included angle θ are substantially determined depending on a conjunction point P 40 between the cheek and the jaw, where a facial feature may be correspondingly expressed thereby. To be specific, the tangent line L 7 is substantially determined by the conjunction point P 40 between the cheek and the lower jaw and is tangent to a jaw curve adjacent to the conjunction point P 40 . The included angle θ is determined by an angle included by the tangent line L 7 and a tangent line L 50 tangent to a cheek curve adjacent to the conjunction point P 40 between the cheek and the jaw.

After defining the auxiliary lines L 1 to L 5 , the hairline L 6 and the tangent line L 7 , the face type determination module 123 may determine the face type of the human face in the image 400 .

Referring to FIG. 5 , in step S 501 illustrated in FIG. 5 , the face type determination module 123 calculates and obtains a distance a 1 (which is also referred to as a first distance) between the auxiliary line L 1 and the auxiliary line L 2 . The face type determination module 123 also calculates and obtains a length b 1 (which is also referred to as a first length) of the auxiliary line L 3 . The face type determination module 123 determines a face type of the human face in the image 400 according to the distance a 1 and the length b 1 .

When a ratio of the distance a 1 to the length b 1 is equal to a first preset value, in step S 503 , the face type determination module 123 determines that the face type of the human face in the image 400 is an oval shape. In the present exemplarily embodiment, a value of the first preset value is 1. However, the invention is not intent to limit the value of the first preset value.

However, when the ratio of the distance a 1 to the length b 1 is not equal to the first preset value, in step S 505 , the face type determination module 123 determines whether the ratio of the distance a 1 to the length b 1 is equal to a second preset value. In the present exemplarily embodiment, a value of the second preset value is ⅔. However, the invention is not intent to limit the value of the second preset value.

When the ratio of the distance a 1 to the length b 1 is equal to the second preset value, in step S 507 , the face type determination module 123 determines whether the included angle θ between the tangent line L 7 which is tangent to the cheek of one side of the human face in the image 400 and the cheek is greater than a first threshold. In the present exemplarily embodiment, an angle of the first threshold is 45 degrees. However, the invention is not intent to limit the angle of the first threshold.

When the included angle θ between the tangent line L 7 and the cheek is greater than the first threshold, in step S 509 , the face type determination module 123 determines that the face type of the human face in the image 400 is a square shape. When the included angle θ between the tangent line L 7 and the cheek is not greater than the first threshold, in step S 511 , the face type determination module 123 determines that the face type of the human face in the image 400 is a round shape.

In addition, if the face type determination module 123 , in step S 505 , determines that the ratio of the distance a 1 to the length b 1 is not equal to the second preset value, in step S 513 , the face type determination module 123 obtains a length c 1 (which is also referred to as a second length) of the auxiliary line L 4 and a length d 1 (which is also referred to as a third length) of the auxiliary line L 5 and determines whether a ratio of the length c 1 to the length d 1 is equal to a fourth preset value. In the present exemplarily embodiment, a value of the fourth preset value is 1. However, the invention is not intent to limit the value of the fourth preset value.

When the ratio of the length c 1 to the length d 1 is equal to the fourth preset value, in step S 515 , the face type determination module 123 determines that the face type of the human face in the image 400 is an inverted triangle shape.

However, if the face type determination module 123 , in step S 513 , determines that the ratio of the length c 1 to the length d 1 is not equal to the fourth preset value, in step S 517 , the face type determination module 123 determines whether the ratio of the length c 1 to the length d 1 is equal to a fifth preset value. In the present exemplarily embodiment, a value of the fifth preset value is ⅔. However, the invention is not intent to limit the value of the fifth preset value.

When the ratio of the length c 1 to the length d 1 is equal to the fifth preset value, in step S 519 , the face type determination module 123 determines that the face type of the human face in the image 400 is a diamond shape. When the ratio of the length c 1 to the length d 1 is not equal to the fifth preset value, in step S 521 , the face type determination module 123 determines that the face type of the human face in the image 400 is an oblong shape.

According to the embodiments illustrated in FIG. 4 and FIG. 5 , the face type determination module 123 may determine that the face type of the human face in the image 400 is an oval shape, a square shape, a round shape, an inverted triangle shape, a diamond shape or an oblong shape.

Then, referring to FIG. 3 again, after step S 301 of determining the face type of the human face in the output image is completed, in step S 303 , the recommended eyebrow style obtaining module 125 may obtain a corresponding recommended eyebrow style according to the determined face type. In the meantime, in step S 305 , the display module 127 may determine positions in the image for superposing the recommended eyebrow style. Lastly, in step S 307 , the display module 127 may superpose and display the recommended eyebrow style on an eyebrow area in the image.

FIG. 6A and FIG. 6B are schematic diagrams of determining positions for superposing the recommended eyebrow style according to an embodiment of the invention.

Referring to FIG. 6A , in the step of determining the positions for superposing the recommended eyebrow style, the display module 127 first defines a plurality of reference points (which are also referred to as first reference points) around an eyebrow 60 of one side and defines a plurality of reference points (which are also referred to as second reference points) around an eyebrow 62 of the other side. Then, the display module 127 obtains a height (which is also referred to as a first height) from a reference point P 1 (which is also referred to as a third reference point) among the first reference points to an auxiliary line L 8 (which is also referred to as a sixth auxiliary line). The auxiliary line L 8 is a horizontal line passing through a reference point 174 , and a coordinate (which is referred to as a Y-coordinate) of the reference point P 1 in a Y direction (which is also referred to as a first direction) is greater than Y-coordinates of the other reference points among the first reference points. Namely, the reference point P 1 is the reference point having the highest position among the first reference points.

A method of obtaining a brow head 60 a and a brow head 60 b is additionally described herein. Referring to FIG. 6B , the display module 127 may define an auxiliary line L 10 (which is also referred to as an eighth auxiliary line) passing through a nose ala 45 and a canthus 134 (which is also referred to as a first canthus) of one of the eyes of the human face. The display module 127 may also define an auxiliary line L 11 (which is also referred to as a tenth auxiliary line) passing through the nose ala 45 and the other canthus 144 (which is also referred to as a second canthus) of the aforementioned eye. An intersection point of the auxiliary line L 10 and the auxiliary line L 8 is the brow head 60 a of the eyebrow 60 , and an intersection point of the auxiliary line L 11 and the auxiliary line L 8 is the brow end 60 b of the eyebrow 60 . Specially, the auxiliary line L 8 is a horizontal line passing through the reference point 174 , an X-coordinate of the reference point 174 is greater than X-coordinates of the other reference points among the first reference points, while the X-coordinate of a reference point 184 is less than the X-coordinates of the other reference points among the first reference points. In addition, a distance between the canthus 134 and the nose ala 45 is greater than a distance between the canthus 144 and the nose ala 45 . In other words, the canthus 134 is relatively closer to the nose, and the canthus 144 is relatively farther from the nose.

Referring to FIG. 6A again, similarly, the display module 127 obtains a height (which is also referred to as a second height) from a reference point P 2 (which is also referred to as a fourth reference point) among the second reference points to an auxiliary line L 9 (which is also referred to as a seventh auxiliary line). The auxiliary line L 9 is a horizontal line passing through a brow head 62 a and a brow end 62 b of the eyebrow 62 , a coordinate (which is referred to as a Y-coordinate) of the reference point P 2 in the Y direction (which is also referred to as the first direction) is greater than Y-coordinates of the other reference points among the second reference points. Namely, the reference point P 2 is the reference point having the highest position among the second reference points.

In addition, the brow head 62 a , the brow end 62 b , the auxiliary line L 9 , the auxiliary line L 12 and the auxiliary line L 13 may be defined in the same way as the brow head 60 a , the brow end 60 b , the auxiliary line L 8 , the auxiliary line L 10 and the auxiliary line L 11 and thus, will not be repeated hereinafter.

Afterwards, the display module 127 may calculate an average height according to the first height and the second height and display the recommended eyebrow style on positions of the eyebrow 60 and the eyebrow 62 according to the average height. To be more detailed, the display module 127 displays the recommended eyebrow style on a position in the eyebrow 60 with the average height from the auxiliary line L 8 and displays the recommended eyebrow style on a position in the eyebrow 62 with the average height from the auxiliary line L 9 .

Specially, the display module 127 may also determine display positions of a brow head and a brow end of the recommended eyebrow style.

FIG. 7A and FIG. 7B are schematic diagrams of determining a display manner of the recommended eyebrow style according to an embodiment of the invention.

Referring to FIG. 7A , it is assumed that a recommended eyebrow style 701 has only two feature points including a brow head 701 a and a brow end 701 b , without a feature point of a brow arch. In this circumstance, the display module 127 displays the recommended eyebrow style 701 on a position in the eyebrow 60 with the average height from the auxiliary line L 8 and displays the recommended eyebrow style 701 on a position in the eyebrow 62 with the average height from the auxiliary line L 9 . Specially, the display module 127 also displays the brow head 701 a of the recommended eyebrow style 701 on the brow head 60 a on the auxiliary line L 10 and displays the brow head 701 a of the recommended eyebrow style 701 on the brow head 62 a on the auxiliary line L 12 . In addition, the display module 127 also displays the brow end 701 b of the recommended eyebrow style 701 respectively on an auxiliary line L 14 (which is also referred to as a ninth auxiliary line) and an auxiliary line L 15 . The auxiliary line L 14 is a vertical line passing through the brow end 60 b of the eyebrow 60 , and the brow end 60 b is located on the auxiliary line L 11 . The auxiliary line L 15 is a vertical line passing through the brow end 62 b of the eyebrow 62 , and the brow end 62 b is located on the auxiliary line L 13 .

It should be noted that the recommended eyebrow style 701 illustrated in FIG. 7A does not have the feature point of the brow arch. However, in the embodiment illustrated in FIG. 7B , a recommended eyebrow style 702 includes a brow head 702 a , a brow end 702 b and a brow arch 702 c . When the recommended eyebrow style 702 is about to be displayed, the display module 127 displays the recommended eyebrow style 702 on a position in the eyebrow 60 with the average height from the auxiliary line L 8 and displays the recommended eyebrow style 702 on a position in the eyebrow 62 with the average height from the auxiliary line L 9 . Specially, the display module 127 displays the brow head 702 a of the recommended eyebrow style 702 on the brow head 60 a on the auxiliary line L 10 and displays the brow head 702 a of the recommended eyebrow style 702 on the brow head 62 a on the auxiliary line L 12 . In addition, the display module 127 also displays the brow end 702 b of the recommended eyebrow style 702 respectively on the auxiliary line L 14 and the auxiliary line L 15 . Further, the display module 127 also displays the brow arch 702 c of the recommended eyebrow style 702 on an auxiliary line L 16 (which is also referred to as an eleventh auxiliary line). A ratio of a distance t 1 (which is also referred to as a fourth distance) between the auxiliary line L 16 and the auxiliary line L 10 to a distance t 2 (which is also referred to as a fifth distance) between the auxiliary line L 16 and the auxiliary line L 14 is 2:1. Similarly, the display module 127 also displays the brow arch 702 c of the recommended eyebrow style 702 on an auxiliary line L 17 . A ratio of a distance t 3 between the auxiliary line L 17 and the auxiliary line L 12 to a distance t 4 between the auxiliary line L 17 and the auxiliary line L 15 is 2:1.

FIG. 8 is a schematic diagram of a display result of displaying the recommended eyebrow style according to an embodiment of the invention.

Referring to FIG. 8 , after the aforementioned steps are performed, the display module 127 may display a recommended eyebrow style 800 respectively on portions of the eyebrow 60 and the eyebrow 62 in the AR. Specially, the recommended eyebrow style 800 may be, for example, the recommended eyebrow style 701 or the recommended eyebrow style 702 as described above. In this way, the user may clearly know a best matched eyebrow style suitable for him/her and how this eyebrow style should be configured in the aforementioned areas of the eyebrows.

FIG. 9 is a flowchart illustrating a display method for recommending an eyebrow style according to an embodiment of the invention.

Referring to FIG. 9 , in step S 901 , the image obtaining module 121 obtains an image. In step S 903 , the face type determination module 123 determines a face type of a human face in the image. In step S 905 , the recommended eyebrow style obtaining module 125 obtains a corresponding recommended eyebrow style according the face type of the human face in the image. In step S 907 , the display module 127 displays the recommended eyebrow style on an eyebrow area of the human face in the image.

In light of the foregoing, in the display method for recommending the eyebrow style, the corresponding recommended eyebrow style may be displayed on the eyebrow area of the human face according to the face type of the human face in the image. Thereby, the user can clearly know the ideal eyebrow style for his/her face type and correspondingly trim his/her eyebrows according to the displayed image, so as to improve efficiency and convenience during the make-up process.

Although the invention has been described with reference to the above embodiments, it will be apparent to one of the ordinary skill in the art that modifications to the described embodiment may be made without departing from the spirit of the invention. Accordingly, the scope of the invention will be defined by the attached claims not by the above detailed descriptions.