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Method and device for adjusting image resolution

A technology of image resolution and adjustment method, applied in the field of image processing, can solve the problems of wasted storage space, large storage space, and the image quality fails to reach a clear level, and achieves the effect of improving quality and reducing storage space

Active Publication Date: 2015-06-10
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the case of insufficient light, the photos taken by the camera have a lot of noise, resulting in insufficient resolution. Resolution refers to the ability to distinguish the details of the original object being photographed.
If the resolution of the photo is high, the storage space required for the photo is correspondingly large. If the resolution is insufficient, the image quality will not be as clear as the resolution should be, and the storage space will be wasted instead.
Furthermore, in the process of image sharing on the network, the existing technology mainly reduces the size of the image by compressing the resolution of the image. However, the existing resolution compression technology is mainly realized by sampling. The sharpness and resolution of the image are significantly reduced

Method used

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  • Method and device for adjusting image resolution
  • Method and device for adjusting image resolution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] figure 1 The first implementation flow of the image resolution adjustment method provided by Embodiment 1 of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown.

[0040] In the embodiment of the present invention, the method is applied to a smart device. The smart devices include, but are not limited to, mobile phones, pocket computers (Pocket personal Computer, PPC), palmtop computers, personal digital assistants (Personal Digital Assistant, PDA), smart cameras, smart video cameras, etc., preferably smart phones and tablet computers. The smart device is provided with a camera capable of taking pictures.

[0041] Such as figure 1 As shown, the method includes:

[0042] In step S101, the ISO sensitivity value of the image to be processed is acquired.

[0043] Exemplarily, each time the smart device finishes shooting through the camera, the photo taken by the camera is acquire...

Embodiment 2

[0050] figure 2 The specific implementation process of step S103 in the image quality adjustment method provided by the second embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown.

[0051] Such as figure 2 As shown, step S103 includes:

[0052] In step S201, a resolution corresponding to the resolution is acquired according to the resolution.

[0053] In step S202, the current resolution of the image to be processed is compressed to a resolution corresponding to the resolution.

[0054] In the embodiment of the present invention, since the to-be-processed image mainly exists random noise, the random noise causes the intensity of illumination and color of the image to fluctuate up and down from the actual image intensity. The embodiment of the present invention removes the random noise while compressing the resolution. Therefore, the step S202 is specifically: merge eve...

Embodiment 3

[0058] image 3 It is the composition structure of the image resolution adjusting device provided in the third embodiment of the present invention, and for the convenience of description, only the parts related to the present invention are shown.

[0059] In the embodiment of the present invention, the device is used to realize figure 1 or figure 2 The image resolution adjustment method described in the embodiment may be a software unit, a hardware unit or a combination of software and hardware built in the smart device. The smart devices include, but are not limited to, mobile phones, pocket computers (Pocket personal Computer, PPC), palmtop computers, personal digital assistants (Personal Digital Assistant, PDA), smart cameras, smart video cameras, etc., preferably smart phones and tablet computers. The smart device is provided with a camera.

[0060] Such as image 3 As shown, the device includes:

[0061] The first acquisition module 31 is configured to acquire the I...

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Abstract

The invention belongs to the technical field of image processing and provides a method and a device for adjusting image resolution. The method comprises the steps of obtaining an image to be processed and the ISO sensitivity of the image to be processed, obtaining the resolution of the image to be processed according to the ISO sensitivity, and compressing the resolution of the image to be processed according to the resolution. The method realizes dynamic adjustment of photo resolution; as a result, the storage space of a photo is effectively reduced under the circumstance of keeping the original resolution of the photo; besides, the quality of the photo is improved, and the storage space of a device can be saved favorably.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to an image resolution adjustment method and device. Background technique [0002] In the prior art, the resolution of the camera on the smart terminal is preset, and the resolution of the photos taken is also fixed. In practical applications, users usually choose the maximum resolution to take pictures in order to obtain the most clear photos. [0003] However, in the case of insufficient light, the photos taken by the camera have large noise, resulting in insufficient resolution. Resolution refers to the ability to distinguish the details of the original object being photographed. If the resolution of the photo is high, correspondingly the storage space required for the photo is also large. If the resolution is insufficient, the picture quality cannot reach the clearness that the resolution should have, which instead causes a waste of storage space. Furtherm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232
Inventor 孙剑波
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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