Image encoding apparatus, digital still camera, digital video camera, image pickup device, printer and image encoding method
An image encoding and encoding data technology, applied in electrical components, image communication, digital video signal modification, etc., can solve problems such as loss of random access, inability to read pixel data, etc., and achieve the effect of reducing the degree of image quality degradation
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Embodiment 1
[0062] figure 1 It is a block diagram showing the configurations of the image encoding device 100 and the image decoding device 110 according to Embodiment 1 of the present invention.
[0063] (Encoding processing in image encoding device)
[0064] First, refer to figure 1 as well as figure 2 , image 3 An encoding process for an image (hereinafter referred to as image encoding process) performed by the image encoding device 100 will be described.
[0065] figure 2 is a flowchart of image encoding processing. image 3 It is a flowchart of the remaining bit counter updating process performed in the image encoding process.
[0066] The image encoding device 100 includes a pixel data receiving unit 101 , a predicted value calculation unit 102 , a difference calculation unit 103 , a quantization processing unit 108 , and a packing unit 106 .
[0067] The pixel data receiving unit 101 sequentially receives pixel data from an imaging element 1312 described later. The pix...
Embodiment 2
[0444] In Embodiment 2, a digital still camera (Digital Still Camera) including the image encoding device 100 and the image decoding device 110 described in Embodiment 1 will be described as an example.
[0445] Figure 12 A block diagram showing the configuration of a digital still camera 1300 according to the second embodiment is shown.
[0446] like Figure 12 As shown, the digital still camera 1300 includes: an image encoding device 100 and an image decoding device 110 . The configurations and functions of the image encoding device 100 and the image decoding device 110 have already been described in Embodiment 1, and thus will not be repeated here.
[0447] The digital still camera 1300 further includes an imaging unit 1310 , an image processing unit 1320 , a display unit 1330 , a compression conversion unit 1340 , a record storage unit 1350 , and an SDRAM 1360 .
[0448] The imaging unit 1310 captures a subject, and outputs digital image data corresponding to the image...
Embodiment 3
[0487] An example to be described in Embodiment 3 is that the image encoding device and the image decoding device described in Embodiment 1 each have a surplus bit control unit.
[0488] Figure 14 It is a block diagram showing the configuration of the image encoding device 100A and the image decoding device 110A in the third embodiment.
[0489] like Figure 14 As shown, the image encoding device 100A and figure 1 Compared with the image encoding device 100 of , the difference is that a surplus bit control unit 109 is further provided. Other than that, since it is the same as the image encoding device 100, detailed description will not be repeated. Also, the image decoding device 110A and figure 1 Compared with the image decoding device 110 of , the difference is that a surplus bit control unit 111 is further included. Other than that, since it is the same as the image decoding device 110, detailed description will not be repeated.
[0490] (encoding processing)
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