Method and device for updating images
An image update and image technology, applied in the field of image processing, can solve problems such as time consumption, and achieve the effect of reducing the amount of calculation
Active Publication Date: 2013-07-10
NEUSOFT CORP
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Problems solved by technology
Assuming that the calculation time required to obtain the pixel value of a pixel on the vehicle terminal display screen is t, then for a vehicle terminal with a display screen pixel size of 800*480, the time required to obtain an image is 384000t, which is very time consuming
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[0034] In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that these embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
[0035] figure 2 is a flowchart showing an image updating method according to an embodiment of the present invention. Such as figure 2 As shown, the image updating method described in one embodiment of the present invention includes repeatedly performing the following steps with a predetermined frequency:
[0036] Step S101: Obtain the change amount of the pixel value of each pixel in the current frame of the first image relative to the pixel value of the pixel at the same position in the previous frame of the image. Wherein, the first image may originat...
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The invention provides a method and a device for updating images. The method includes steps of acquiring the variable quantity of a pixel value of each pixel in a current frame of a first image; determining a prospected variable quantity of a pixel value of an optional pixel in a current frame of a second image according to a preset ordered mapping relation among positions of pixels of the second image and positions of the pixels of the first image, the variable quantity of a pixel value of a certain pixel, which corresponds to the optional pixel in the current frame of the second image, in the current frame of the first image and variable quantities of pixel values of pixels within a preset neighboring range of the corresponding pixel in the current frame of the first image; and determining a pixel value of each pixel in a next frame of the second image according to a pixel value of each pixel in the current frame of the second image and a prospected variable quantity of the pixel value of the pixel. The steps of the method are implemented repeatedly at preset frequency. The method and the device have the advantage that computation required when images are updated can be reduced by the method.
Description
technical field [0001] The invention belongs to the field of image processing, and in particular relates to an image updating method and device. Background technique [0002] At present, the computing power of smartphones is getting stronger and stronger, and the network connection speed is getting faster and faster. In contrast, cars are far less intelligent than smartphones. In order to make up for this imbalance, a collaboration method between in-vehicle terminals and smartphones has been developed. figure 1 is a schematic diagram showing how the vehicle-mounted terminal and the smartphone cooperate. Such as figure 1 As shown, the user controls the smartphone by operating the vehicle-mounted terminal, and to a certain extent, the images and sounds contained in the content and software applications on the smartphone can be sent to the vehicle-mounted terminal for display and playback, so that the information provided by the smartphone can be utilized. functions to acco...
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Inventor 聂山人杨明张翼赵立军张骞
Owner NEUSOFT CORP