TW201624422A - Image processing method and electronic device thereof - Google Patents

Abstract

An image processing method and an electronic device thereof are provided. The image processing method includes the following steps. The depth values of a plurality of objects within a reference image are determined according to a depth map that corresponds to the reference image. The objects have at least one first object and at least one second object. It is noted that the depth value of the first object is less than that of the second object. Meantime, a reference depth value is obtained. The first object and a background image are obtained according to the reference image. The first object may be maintained or magnified, wherein the depth value of the first object is less than or equal to the reference depth value. A frame image is generated to make the first object overlap on the frame image and the background image overlap under the frame image.

Description

Image processing method and electronic device thereof

The invention relates to an image processing method and an electronic device thereof, in particular to an image processing method and an electronic device capable of highlighting a target object in front of an outer frame image to achieve a stereoscopic effect.

In general, in order to display the effect of three-dimensional (3D) images, it is usually necessary to provide two different images to the eyes of the person, so that the eyes of the person respectively see different images at the same time and generate parallax, thereby causing Stereoscopic vision, for example, a stereoscopic display splits the same image through a grating, so that the image received by both eyes has an offset on the horizontal axis, causing parallax, or people can wear special glasses (such as red and blue (green) Glasses), which causes the eyes to receive images of different colors and cause parallax. In this way, since the two images seen by both eyes have parallax, the brain will automatically recombine to form stereoscopic vision.

However, the above display method usually requires the addition of hardware, and when the eyes see different images, it may cause people's eyes to be tired, and may even cause dizziness and the like.

The embodiment of the invention provides an image processing method and an electronic device thereof, and determines a relative depth relationship between a plurality of objects in an image according to a depth map, and can enlarge and superimpose a target object before an outer frame image, thereby Highlighting the target object, and Achieve a three-dimensional effect.

An embodiment of the present invention provides an image processing method, where the image processing method includes the following steps: determining a depth value of a plurality of objects in the original image according to a depth map corresponding to the original image, wherein the plurality of objects include at least one first An object and at least one second object, wherein the depth value of the at least one first object is smaller than a depth value of the at least one second object; obtaining a reference depth value; obtaining the at least one first object according to the original image and a background image; maintaining a size of the at least one first object or magnifying the at least one first object, wherein a depth value of the at least one first object is less than or equal to the reference depth value, and the at least a depth value of the second object is greater than the reference depth value; generating a frame image to superimpose the at least one first object and the background image before and after the frame image; and after synthesizing the overlay The at least one first object, the outer frame image and the background image to generate a composite image.

An embodiment of the present invention further provides an electronic device, where the electronic device includes a display module and a processing module. The processing module is coupled to the display module. The processing module can be configured to perform the image processing method described above to generate a composite image that highlights the at least one first object before the outer frame image. A display module can be used to display the original image and the composite image.

In summary, the image processing method and the electronic device provided by the embodiments of the present invention can determine the relative depth relationship between multiple objects in an image according to the depth map, and select a target object and a background in the original image. The image is then enlarged and superimposed on an outer frame image, and the background image is superimposed on the outer frame image to highlight the target object, thereby achieving a stereoscopic effect. In other words, the electronic device only needs one original image and one depth map corresponding to the original image. By performing the image processing method, the target object can be highlighted to achieve a stereoscopic effect, so that compared with the conventional stereoscopic image The display method is simpler and lower in cost.

In order to further understand the features and technical aspects of the present invention, reference should be made to the detailed description of the invention and the accompanying drawings. The invention is not to be construed as limiting the scope of the invention.

1‧‧‧Electronic device

11‧‧‧Display module

12‧‧‧Processing module

13‧‧‧Memory Module

21, 22, 23‧‧‧ objects

D1, D5‧‧‧ panoramic depth map

D2, D3, D4, D6‧‧‧ synthetic images

D11‧‧ images

W‧‧‧ frame image

S110~S140‧‧‧Steps

S210~S240‧‧‧Steps

1 is a block diagram of an electronic device in accordance with an embodiment of the present invention.

2 is a panoramic deep view of an embodiment of the present invention.

3 is a first composite image in accordance with an embodiment of the present invention.

4 is a second composite image in accordance with an embodiment of the present invention.

Figure 5 is a third composite image in accordance with an embodiment of the present invention.

Figure 6 is a panoramic deep view of another embodiment of the present invention.

Figure 7 is a fourth composite image in accordance with an embodiment of the present invention.

FIG. 8 is a flowchart of an image processing method according to an embodiment of the present invention.

FIG. 9 is a flowchart of an image processing method according to another embodiment of the present invention.

Various illustrative embodiments are described more fully hereinafter with reference to the accompanying drawings. However, the inventive concept may be embodied in many different forms and should not be construed as being limited to the illustrative embodiments set forth herein. Rather, these exemplary embodiments are provided so that this invention will be in the In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Similar numbers always indicate similar components.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, such elements are not limited by the terms. These terms are used to distinguish one element from another. Thus, a first element discussed below could be termed a second element without departing from the teachings of the inventive concept. As used herein, the term "and/or" includes any of the associated listed items and all combinations of one or more.

Please refer to FIG. 1 and FIG. 2 simultaneously. FIG. 1 is a block diagram of an electronic device according to an embodiment of the invention. 2 is a panoramic deep view of an embodiment of the present invention. As shown in Figure 1, The electronic device 1 includes a display module 11 , a processing module 12 , and a memory module 13 . The processing module 12 is coupled to the display module 11 and the memory module 13. In this embodiment, the electronic device 1 can be a smart phone, a notebook computer, a desktop computer, a tablet computer, a digital camera, a digital photo frame, or other electronic device having digital computing capability and display capability. This embodiment is not The implementation of the electronic device 1 is limited.

The memory module 13 is a storage medium, for example, an embedded temporary storage memory, a physical memory, or an external storage device (such as an external memory card) disposed in the electronic device 1 , wherein the memory module 13 stores There are captured images and depth maps generated after image processing, such as the panoramic deep map D1 shown in FIG. 2 (ie, the image with clear front and back views) and the depth map corresponding to the panoramic deep map D1. The scene included in the panoramic deep view D1 of this example is illustrated by the object 21, the object 22 and the object 23. The object 21, the object 22 and the object 23 are respectively represented by a cylinder, a cone and a cube. In the present embodiment, the depth of field of the object 21 is shallower than that of the object 22 and the object 23, and the depth of field of the object 23 is the deepest than the object 21 and the object 22. Therefore, in a representation of the depth map, the grayscale value corresponding to the object 21 is the smallest, and the grayscale value corresponding to the object 23 is the largest (if the 256 grayscale is taken as an example, the grayscale value includes 0 to 255, 0. It is the whitest, 255 is the darkest). It should be noted that the embodiment of the present invention does not limit the image stored by the memory module 13, that is, the panoramic deep image D1 may be another shooting scene, or even a partially clear image, which is not in the embodiment of the present invention. Limited to this. In addition, the establishment of the depth map corresponding to the panoramic depth map D1 can be achieved by laser ranging, binocular vision, structured light or light field effects, and the implementation of the depth map is a common knowledge in the art. The prior art is not described here. It should be noted that, as described in the foregoing, the depth map is generally represented by a pixel having a darker color, and the grayscale value is higher. However, the embodiment of the present invention is not limited thereto, that is, the representation manner of the depth map. It can also be that the darker the pixel, the lower the grayscale value, that is, 0 is the darkest, and 255 is the whitest, as long as the depth map can express the near and far information.

The processing module 12 can obtain the panoramic deep image D1 from the memory module 13 and corresponding to the The depth map of the panoramic depth map D1 is described, and the distance relationship between the object 21, the object 22, and the object 23 is determined according to the depth map to correspond to the depth values of the object 21, the object 22, and the object 23. In addition, the processing module 12 can capture the object 21, the object 22, and the object 23 in the panoramic deep view D1 according to the depth map, wherein the processing module 12 captures the related art of the object in the panoramic deep view D1 according to the depth map. It is a well-known technique in the art, and therefore will not be described here. In addition, the processing module 12 may further determine, after the target object is superimposed on a reference surface, and a background image is superimposed on the reference surface, according to a reference depth value and a depth value of each object. The reference plane is, for example, a frame image. Then, the processing module 12 synthesizes the superimposed target object, the outer frame image and the background image to generate a composite image, wherein the background image is generated by the processing module 12 according to the panoramic deep image D1, and the background image includes There are target objects and objects with depth values greater than the target object. In this embodiment, the processing module 12 can be implemented as an integrated circuit (IC), or can be implemented by a microcontroller with an appropriate firmware, or can be a software module implemented by a CPU based on a software. The possible aspects of the processing module 12 are not limited.

In this embodiment, the processing module 12 can determine that the object 21, the object 22, and the object 23 each correspond to a range of depth values according to the depth map, but the processing module 12 is based on the minimum of the object 21, the object 22, and the object 23. The depth values are used as the depth values of the object 21, the object 22, and the object 23. For example, if the depth value of the object 21 ranges from 20 to 100, the processing module 12 determines that the depth value of the object 21 is 20. On the other hand, the memory module 13 can store another panoramic depth map, and the object in the panoramic depth map can have only a single depth value without a depth value range, and the processing module 12 determines the single depth. The value is the depth value of the object.

The display module 11 can display the panoramic deep view D1, and the composite image can be received by the processing module 12 to correspondingly display the synthesized image. In this embodiment, the display module 11 can be a liquid crystal display screen or a touch display screen. However, the present invention is not limited thereto, that is, an implementation of the display module 11 can be changed according to the needs of those skilled in the art.

In this embodiment, the display module 11 can display the stored panoramic depth map (not limited to the panoramic deep map of FIG. 2) for the user to click on an object, and then the processing module 12 will be based on the selected object. The depth value determines a reference depth value, that is, the processing module 12 determines the reference depth based on the depth value of the selected location. Or, in another embodiment, the display module 11 can further display an icon in the stored panoramic depth map for the user to directly select a reference depth value, wherein the icon is, for example, labeled a range of depth values (such as a range of grayscale values between 0 and 255, wherein a larger grayscale value represents a larger depth value, that is, a deeper depth of field), but this embodiment of the present invention does not Limited. Next, after the processing module 12 obtains a reference depth value, the processing module 12 determines a relationship between the reference depth value and a relative depth value between the plurality of objects, so that the depth value is less than or equal to the reference depth value. The object is enlarged and highlighted in front of an outer frame image to achieve a stereoscopic effect.

In another embodiment, after the processing module 12 obtains a reference depth value, if the processing module 12 determines that the object having the depth value less than or equal to the reference depth value has a plurality of objects, the processing module 12 may select only the plural number. The embodiment of the present invention does not limit the possible manner in which the electronic device 1 determines the target object before the object having the highest depth value among the objects is the target object and the target object is superimposed on the outer frame image.

It should be noted that, in this embodiment, if the electronic device 1 is an electronic device that does not include a lens module (such as a desktop computer or a digital photo frame), the user can manually view the panoramic deep image D1 and The depth map corresponding to the panoramic depth map D1 is input to the memory module 13 of the electronic device 1 such that the memory module 13 stores the panoramic deep image D1 and the depth map. On the other hand, if the electronic device 1 is an electronic device (such as a smart phone or a digital camera) including a lens module, the electronic device 1 can perform image capturing on a scene through the lens module to generate multiple images. image. The processing module 12 can generate a depth map and a panoramic depth map according to the plurality of images, and store the depth map and the panoramic depth map in the memory module 13, wherein the lens module and the processing module 12 Coupled, and the lens module can be a single lens module or a multi-lens module.

In order to explain in more detail the image processing method and electronic device thereof according to the present invention The working principle of the present invention will be further described below by at least one of the various embodiments.

One of the examples:

Please refer to FIG. 1 to FIG. 3 simultaneously. FIG. 3 is a first synthesized image according to an embodiment of the present invention. Assuming that the user selects the object 21 (which can be regarded as a target object), the processing module 12 extracts the object 21 from the panoramic deep view D1 according to the depth map corresponding to the panoramic deep view D1, and enlarges the captured image. Object 21. Then, the processing module 12 uses the panoramic deep image D1 as a background image to sequentially overlay the outer frame image W and the enlarged object 21, thereby generating a composite image D2 as shown in FIG. 3 to highlight the object 21 to reach Stereo effect.

Embodiment 2:

Please refer to FIG. 1 , FIG. 2 and FIG. 4 simultaneously. FIG. 4 is a second composite image according to an embodiment of the invention. Assuming that the user clicks on the object 22 (which can be regarded as a target object), the processing module 12 retrieves the object 22 from the panoramic deep view D1 according to the depth map corresponding to the panoramic deep view D1. In addition, the processing module 12 also captures a partial image of the object deep image D1 and the object 23 in the panoramic deep image D1, that is, the processing module 12 captures the image D11 from the panoramic deep image D1 (as shown in FIG. 2). . Then, the processing module 12 enlarges the captured object 22 and uses the image D11 as a background image to sequentially superimpose the outer frame image W and the enlarged object 22, thereby generating a composite image D3 as shown in FIG. To highlight the object 22, to achieve a three-dimensional effect.

Alternatively, please refer to FIG. 5. FIG. 5 is a third composite image according to an embodiment of the present invention. In this embodiment, the difference from the above embodiment is that, in addition to the object 22, the processing module 12 also captures the depth value less than the reference depth value (refer to the reference depth determined according to the depth value of the object 22). Value of the object 21. That is, in the embodiment, the target object is the object 21 and the object 22, and the processing module 12 enlarges the object 21 and the object 22, and uses the panoramic deep image D1 as a background image to sequentially superimpose the outer frame image W and enlarge the image. The object 21 and the object 22, thereby generating the composite image D4 as shown in FIG. 5, simultaneously highlighting the object 21 and the object 22 before the outer frame image W, reaching the stand Body effect. It should be noted that the processing module 12 according to the distance between the object 21 and the object 22 (that is, according to the depth value of the object), correspondingly changes the position of the object 21 and the object 22 in the composite image D4, and the magnification of the object 21 The magnification will be higher than the magnification of the object 22, and the smaller the depth value, the larger the magnification.

Third embodiment:

In this embodiment, the user can select a reference depth value by using the icon displayed by the display module 11. Referring again to FIG. 1 to FIG. 3, assuming that the depth values of the object 21, the object 22, and the object 23 are 20, 100, and 200, respectively, and the user selects a reference depth value of 50, the processing module 12 will calculate the reference depth. The value is compared with the depth values of the object 21, the object 22, and the object 23 to determine that the depth value of the object 21 is less than the reference depth value. Then, the processing module 12 extracts the object 21 (which can be regarded as a target object) whose depth value is smaller than the reference depth value from the panoramic depth image D1 according to the depth map corresponding to the panoramic depth map D1, and enlarges the captured object 21 . Next, the processing module 12 uses the panoramic deep image D1 as a background image to sequentially superimpose the outer frame image W and the enlarged object 21, thereby generating a composite image D2 as shown in FIG. 3 to achieve a stereoscopic effect.

Embodiment 4:

Referring again to FIG. 1 , FIG. 2 and FIG. 4 , it is assumed that the depth values of the object 21 , the object 22 and the object 23 are 20, 100 and 200, respectively, and it is assumed that the user selects the reference depth value of 150 by the aforementioned icon. The module 12 compares the reference depth value with the depth values of the object 21, the object 22, and the object 23 to determine that the depth value of the object 21 and the object 22 is less than the reference depth value. Next, the processing module 12 extracts an object 22 having a depth value smaller than the reference depth value and having a higher depth value relative to the object 21 from the panoramic depth image D1 according to the depth map corresponding to the panoramic depth map D1 (can be regarded as a target object) ), and the image D11 is captured from the panoramic depth map D1. Then, the processing module 12 enlarges the captured object 22 and uses the image D11 as a background image to sequentially superimpose the outer frame image W and the enlarged object 22, thereby generating a composite image D3 as shown in FIG. Achieve a three-dimensional effect.

Or, please refer to FIG. 5, in this embodiment, a place different from the above embodiment The processing module 12 captures the object 21 and the object 22 whose depth value is smaller than the reference depth value. That is, in the present embodiment, the target object is the object 21 and the object 22, and the processing module 12 enlarges the object 21 and the object 22, and uses the panoramic deep image D1 as a background image to sequentially overlap as shown in FIG. The frame image W, the enlarged object 21 and the object 22 are used to generate the composite image D4 as shown in FIG. 5 to simultaneously highlight the object 21 and the object 22 to achieve a stereoscopic effect. It should be noted that the processing module 12 correspondingly changes the position of the object 21 and the object 22 in the composite image D4 according to the depth value of the object, and the magnification of the object 21 is higher than the magnification of the object 22, wherein the depth value The smaller the object, the greater the magnification.

Example 5:

Referring to FIG. 1 to FIG. 3 again, it is assumed that the reference depth value selected by the user through the foregoing icon is equal to the depth value of the object 21, and the processing module 12 is formed by the depth map D1 according to the depth map corresponding to the panoramic depth map D1. An object 21 (ie, a target object) having a depth value equal to the reference depth value is captured. Then, the processing module 12 enlarges the object 21 and uses the panoramic deep image D1 as a background image to sequentially overlap the panoramic deep image D1, the outer frame image W, and the enlarged object 21, thereby generating the image as shown in FIG. Synthesize image D2 to achieve a stereo effect.

Sixth embodiment:

Please refer to FIG. 6 and FIG. 7. FIG. 6 is a panoramic deep view according to another embodiment of the present invention. Figure 7 is a fourth composite image in accordance with an embodiment of the present invention. In this embodiment, the memory module 13 further stores a panoramic depth map D5 and a depth map corresponding to the panoramic depth map D5. The object 21 of the panoramic deep view D5 of this example has the same depth value as the object 22, and the depth of depth of the object 23 is the deepest than the object 21 and the object 22. Assuming that the reference depth value selected by the user through the foregoing icon is equal to or greater than the depth value of the object 21 and the object 22, and the reference depth value is smaller than the depth value of the object 23, the processing module 122 is configured by the panorama according to the corresponding depth map. The deep drawing D4 captures the object 21 and the object 22 (the target object is the object 21 and the object 22). Then, the processing module 122 uses the panoramic deep image D5 as a background image to sequentially superimpose the outer frame image W and the enlarged object 21 And the object 22, thereby generating a composite image D6, wherein the object 21 and the object 22 of the synthetic image are highlighted before the outer frame image W (as shown in FIG. 7).

As can be seen from the above, the electronic device 1 is separated between the foreground object and the foreground object by using the outer frame image W, so that a visual stereoscopic effect can be generated in the human eye nerve, so that the desired method can be achieved in a simple and quick manner. The three-dimensional effect.

In addition, as can be seen from the above embodiments of FIG. 4, FIG. 5 and FIG. 7, whether the user selects a specific object through the display module 11 so that the processing module 12 determines a reference depth value, or directly by the above The icon selects a reference depth value. If there are more than two objects whose depth value is less than the reference depth value, the processing module 12 can capture all objects whose depth value is greater than the reference depth value, and superimpose the captured objects. Before the frame image and the background image; or the processing module 12 can only capture at least one object having the highest depth value among all the objects whose depth value is less than the reference depth value, and superimpose the image on the frame image and the background image The embodiment of the present invention does not limit the possible manner in which the electronic device 1 generates a synthetic image, that is, the embodiment in which the outer frame image is used to highlight the target object is within the scope of the present invention.

In short, according to the embodiment of FIG. 2 to FIG. 7 , the electronic device 1 of the embodiment of the present invention can superimpose at least one target object having a depth value less than or equal to the reference depth value before the outer frame image W. And superimposing a background image on the outer frame image W, this can help highlight the target object to serve stereoscopic visual effects.

It should be noted that the magnification of the target object of the present invention may be greater than or equal to 1 (ie, maintain the original ratio), and the magnification of the background image may be greater than, equal to, or less than 1. The above embodiment does not limit the scope of the present invention. The magnification of the target object needs to be greater than 1, and the magnification of the background image needs to be equal to 1. In the embodiment of the present invention, as long as the outer frame image W superimposed on the background image can completely cover the outer edge of the background image, and the magnification of the background image can be less than or equal to the magnification of the target object, thereby In order to effectively highlight the selected target object, a better stereoscopic effect is created.

It should be noted that the outer frame image W shown in FIG. 3, FIG. 4, FIG. 5 and FIG. 7 is a hollow rectangular black frame image, but the embodiment of the present invention does not limit the outer frame image W. The shape and color can be changed by those skilled in the art according to their actual needs. In addition, since the magnification of the target object is greater than or equal to the magnification of the background image, after the overlay, the image of the object corresponding to the target object in the background image can be completely covered.

In addition, in another embodiment, the processing module 12 can continuously enlarge the captured object 21, the object 22, or the object 23 in a time, and instantly control the display module to continuously display during this time. To achieve the effect of dynamic display.

Please refer to FIG. 8. FIG. 8 is a flowchart of an image processing method according to an embodiment of the present invention. The image processing method can be implemented in the electronic device 1 shown in FIG. 1 . Please refer to FIG. 1 to FIG. 8 for understanding. The image processing method includes the following steps.

In step S110, a depth value of a plurality of objects in an original image is determined according to a depth map. In this step, the original image may be the panoramic deep image D1 shown in FIG. 2 or the panoramic deep image D5 shown in FIG. 6, and the depth map corresponds to the original image. Since the depth map can represent the near and far relationship of the object 21, the object 22, and the object 23 in the original image, the electronic device 1 can determine the depth values of the plurality of objects in the original image according to the depth map. Regarding the details of determining the depth value of a plurality of objects based on the depth map, the electronic device 1 is a prior art technique of the present technology, and therefore will not be described in detail herein.

In step S120, a reference depth value is selected. In this step, the user can select the object 21, the object 22 or the image image displayed by the electronic device 1 (such as the panoramic deep image D1 shown in FIG. 2 or the panoramic deep image D5 shown in FIG. 6). The object 23, such that the electronic device 1 determines a reference depth value according to the depth value of the selected object 21. Alternatively, the user can directly select a depth value by using the icon (such as the above-mentioned pull axis indicating the range of depth values), so that the electronic device 1 can use the depth value as a reference depth value.

In step S130, at least one target object and a background image are obtained from the original image. In this step, according to the reference depth value, the electronic device 1 extracts at least one target object from the original image, wherein the target object has a depth value smaller than Or equal to the reference depth value. In addition, in this step, the electronic device 1 can also obtain a background image from the original image, wherein the background image is a partial image of the original image or the original image.

In step S140, a frame image is generated and the background image, the frame image and the target object are sequentially superimposed to generate a composite image having a stereoscopic effect. In this step, the electronic device 1 superimposes an outer frame image (such as the outer frame image W shown in FIGS. 3, 4, 5, and 7) on the outer periphery of the background image. Then, the electronic device 1 superimposes the captured target object on the outer frame image to cover the image portion corresponding to the target object in the background image. Then, the electronic device 1 synthesizes the superimposed background image, the outer frame image, and the target object, so as to achieve the purpose of highlighting the target object to create a stereoscopic visual effect.

Please refer to FIG. 9. FIG. 9 is a flowchart of an image processing method according to another embodiment of the present invention. The image processing method can be implemented in the electronic device 1 shown in FIG. 1 . Please refer to FIG. 1 to FIG. 7 and FIG. 9 for understanding. The image processing method includes the following steps.

In step S210, a depth value of a plurality of objects in an original image is determined according to a depth map, and the plurality of objects are captured according to the depth map, wherein the depth map corresponds to the original image. It should be noted that the technical details of the object in an image taken by the electronic device 1 according to the depth map are known in the art, and therefore will not be described in detail herein.

In step S220, a reference depth value may be selected according to the manner as described in step S120.

In step S230, at least one target object is selected from the plurality of captured objects, and a background image is obtained from the original image. In this step, because the electronic device 1 has extracted a plurality of objects from the original image in the foregoing step S210, the electronic device 1 can directly be captured by the plurality of objects according to the reference depth value selected in step S220. In the object, at least one target object is selected (the depth value is less than or equal to the reference depth value), and a background image is obtained from the original image.

In step S240, as described in step S140, a frame image is generated and the background image, the frame image, and at least one object are sequentially superimposed to generate a composite image having a stereoscopic effect. Thereby, the target object is highlighted to achieve a stereoscopic effect.

It is to be noted that, in order to further highlight the stereoscopic effect of the target object, the electronic device 1 may further enlarge the target object or zoom out between steps S130 and S140 or between steps S230 and S240. The background image is then executed in step S140 or step S240 to sequentially superimpose the background image, the outer frame image and the target object to further highlight the target object. It should be noted that, as described in the foregoing, the embodiment of the present invention does not limit the magnification of the target object and the background image, that is, the magnification of the background image may be less than, equal to or greater than 1, and the magnification of the target object may be Greater than or equal to 1. However, it should be noted that the magnification of the background image must be less than or equal to the magnification of the target object to effectively highlight the selected object, thereby achieving a better stereoscopic effect.

It should be noted that, in an embodiment, the manner in which the electronic device 1 determines the magnification of the target object and the background image may be, for example, calculating a difference between the reference depth value and the depth value of the target object to determine the target. The magnification of the object, that is, if the difference value obtained is larger, the magnification of the target object is larger.

The details of the steps of the image processing method have been described in detail in the above-described embodiments of FIGS. 1 to 4, and thus will not be described herein.

It should be noted that the steps of the embodiment of FIG. 8 and FIG. 9 are only for convenience of description, and the embodiments of the present invention do not take the steps of the steps as a limitation of implementing various embodiments of the present invention.

In summary, the image processing method and the electronic device provided by the embodiments of the present invention can determine the relative depth relationship between multiple objects in an image according to the depth map, and select a target object and a background in the original image. The image is then enlarged and superimposed on an outer frame image, and the background image is superimposed on the outer frame image to highlight the target object, thereby achieving a stereoscopic effect. In other words, the electronic device only needs one original image and one corresponding to the original image. By performing the image processing method, the target object can be highlighted to achieve a stereoscopic effect, which is simpler and less costly than the conventional stereoscopic display mode.

The above description is only the preferred embodiment of the present invention, but the features of the present invention are not limited thereto, and any one skilled in the art can easily change or modify it in the field of the present invention. It is covered by the scope of the invention.

S110~S140‧‧‧Steps

Claims (10)

An image processing method includes: determining a depth value of a plurality of objects in an original image according to a depth map, wherein the depth map corresponds to the original image, and the objects include at least one first object and at least one second object And the depth value of the at least one first object is smaller than the depth value of the at least one second object; obtaining a reference depth value; obtaining the at least one first object and a background image according to the original image; maintaining the at least one first The size of the object or the at least one first object is enlarged, wherein the depth value of the at least one first object is less than or equal to the reference depth value, and the depth value of the at least one second object is greater than the reference depth value; An outer frame image to superimpose the at least one first object and the background image before and after the outer frame image; and synthesizing the superimposed at least one first object, the outer frame image, and the background image, To generate a composite image. The image processing method of claim 1, further comprising: maintaining a size of the background image or magnifying the background image, wherein the magnification of the background image is less than or equal to a magnification of the at least one first object. The image processing method of claim 1, further comprising: calculating a difference value between the reference depth value and a depth value of the at least one first object to determine a magnification of the at least one first object, wherein The larger the difference value, the larger the magnification of the at least one first object. The image processing method of claim 1, wherein the background image comprises the at least one first object and the at least one second object. The image processing method of claim 1, wherein the frame image is superimposed on an outer periphery of the background image. An electronic device, comprising: a processing module, configured to perform the image processing method according to claim 1, 2, 3, 4 or 5, to generate the at least one first object before the outer frame image And the display module is coupled to the processing module for displaying the original image and the composite image. The electronic device of claim 6, wherein the display module displays an icon for a user to select the reference depth value. The electronic device of claim 6, further comprising: a memory module coupled to the processing module, the memory module storing the original image and the depth map. The electronic device of claim 6, further comprising: a lens module coupled to the processing module, wherein the lens module is configured to perform image capturing on a scene to generate a plurality of images; wherein the processing module The images are processed to generate the depth map and the original image. The electronic device of claim 6, wherein a user selects the at least one first object through the display module, whereby the processing module determines the reference depth value according to the depth value of the at least one first object.