Thumbnail generation method, device and terminal equipment
A technology of thumbnails and thumbnail images, which is applied in the field of image processing, can solve problems such as full hard disk, memory space consumption, and difficulty in cleaning intermediate files, and achieve the effects of reducing size, solving excessive memory usage, and improving generation efficiency
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Embodiment 1
[0025] figure 1 It is a flow chart of a method for generating a thumbnail provided in Embodiment 1 of the present invention. This embodiment is applicable to the case of generating thumbnails. The method can be executed by a device for generating a thumbnail image, and the device can be implemented by means of hardware and / or software. see figure 1 , the thumbnail generating method provided in this embodiment specifically includes the following:
[0026] S110. Determine the size of the image to be thumbnailed and the size of the target thumbnail, wherein the image to be thumbnailed is a block-compressed image.
[0027] Wherein, the block-compressed image refers to an image obtained by compressing and encoding each image block of a fixed size in the image, and the size of the image to be thumbnailed can be obtained by reading the header file information of the image to be thumbnailed. The thumbnail size can be obtained from the target thumbnail size parameter input by the u...
Embodiment 2
[0041] This embodiment specifically provides a method for generating a thumbnail image on the basis of the first embodiment above. figure 2 It is a flow chart of a method for generating a thumbnail provided in Embodiment 2 of the present invention. see figure 2 , the thumbnail generating method provided in this embodiment specifically includes the following:
[0042] S210. Determine the size of the image to be thumbnailed and the size of the target thumbnail.
[0043] In this embodiment, the image to be thumbnailed is an image in JPEG encoding format as an example. image 3 It is a process schematic diagram of a method for generating a thumbnail provided in Embodiment 2 of the present invention. see image 3 , get the size of the target thumbnail image 160*90 pixels, and get the size of the image to be thumbnailed 3840*2160 pixels by reading the file header information of the image to be thumbnailed.
[0044] S220. Divide the size of the image to be thumbnailed by a pre...
Embodiment 3
[0057] Figure 5 It is a structural schematic diagram of a thumbnail generating device provided in Embodiment 3 of the present invention. The said device can be applied to the case of generating thumbnail images. see Figure 5 The thumbnail generation device 01 provided in this embodiment specifically includes a size determination module 10 , a decoding sampling parameter determination module 20 , a decoded image generation module 30 and a destination thumbnail generation module 40 .
[0058] Wherein, the size determination module 10 can be used to determine the size of the image to be thumbnailed and the size of the target thumbnail, wherein the image to be thumbnailed is a block compressed image; the decoding sampling parameter determination module 20 can be used to The size of the thumbnail image and the size of the target thumbnail determine the decoding sampling parameters; the decoded image generation module 30 can be used to sample and decode the image to be thumbnail...
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