怎么解码图片

⑴ 手机上怎么把有马赛克的图片解码

当然有了！

希望可以采纳！ 谢谢

⑵ tk图怎么解码

用这个工具，RPGViewer图片资源提取工具。

解码(Decoding)是指受传者将接受到的符号或代码还原为信息的过程，与编码过程相对应。解码活动要受到受众的社会地位和文化背景的影响，体现社会的多样性。

受众的解码还具有同向性、对抗性、妥协性三种形态。编码和解码的连通过程实质上就是简单的传播过程。如果说符号具或符号的表现层面是由编码者决定的，那么符号义或符号的内容层面则是由解码者决定的。

在计算机网络中，网络通过通信网将计算机互联以实现资源共享和数据传输的。当使用的通信网信号形式和传输设备的信号形式不一样时。

就必须进行信号形式的转换。一般将在发送方进行的信号形式转换称为编码，接收方进行的信号形式的转换成为解码。

DFT 算法

用FFT算法解码，每帧信号要做N= 256 点FFT，而组成所有DTMF信号的频率只有 8 个，于是可以只对每帧信号算 8 个最具有特征的特征点的DFT，以避开 FFT中许多无意义的计算。

DFT算法解码过程如下：
1.对每帧 DTMF 信号在 8 个特定的频率上做DFT，画幅频谱图，从中找出代表各信号的特征字。

2.将各 DTMF 信号还原为相应数字键。

⑶ 图片解码怎么解

1、你能保存到硬盘上的动态图片，它的扩展名是jpg。那个文件实际上是gif格式，只是扩展名被改成了jpg，在acdsee中查看，在最下方状态栏图片分辨率的右边就

⑷ 如何：编码和解码 PNG 图像

' Open a Stream and decode a PNG image Dim imageStreamSource As New FileStream("smiley.png", FileMode.Open, FileAccess.Read, FileShare.Read) Dim decoder As New PngBitmapDecoder(imageStreamSource, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default) Dim bitmapSource As BitmapSource = decoder.Frames(0) ' Draw the Image Dim myImage As New Image() myImage.Source = bitmapSource myImage.Stretch = Stretch.None myImage.Margin = New Thickness(20) // Open a Stream and decode a PNG image Stream imageStreamSource = new FileStream("smiley.png", FileMode.Open, FileAccess.Read, FileShare.Read); PngBitmapDecoder decoder = new PngBitmapDecoder(imageStreamSource, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default); BitmapSource bitmapSource = decoder.Frames[0]; // Draw the Image Image myImage = new Image(); myImage.Source = bitmapSource; myImage.Stretch = Stretch.None; myImage.Margin = new Thickness(20); // Open a Stream and decode a PNG image Stream^ imageStreamSource = gcnew FileStream("smiley.png", FileMode::Open, FileAccess::Read, FileShare::Read); PngBitmapDecoder^ decoder = gcnew PngBitmapDecoder(imageStreamSource, BitmapCreateOptions::PreservePixelFormat, BitmapCacheOption::Default); BitmapSource^ bitmapSource = decoder->Frames[0]; // Draw the Image Image^ myImage = gcnew Image(); myImage->Source = bitmapSource; myImage->Stretch = Stretch::None; myImage->Margin = System::Windows::Thickness(20); 本示例演示如何使用 PngBitmapEncoder 将 BitmapSource 编码为 PNG 图像。 Dim width As Integer = 128 Dim height As Integer = 128 Dim stride As Integer = width Dim pixels(height * stride) As Byte ' Define the image palette Dim myPalette As BitmapPalette = BitmapPalettes.Halftone256 ' Creates a new empty image with the pre-defined palette Dim image As BitmapSource = System.Windows.Media.Imaging.BitmapSource.Create( _ width, height, 96, 96, PixelFormats.Indexed8, myPalette, pixels, stride) Dim stream As New FileStream("new.png", FileMode.Create) Dim encoder As New PngBitmapEncoder() Dim myTextBlock As New TextBlock() myTextBlock.Text = "Codec Author is: " + encoder.CodecInfo.Author.ToString() encoder.Interlace = PngInterlaceOption.On encoder.Frames.Add(BitmapFrame.Create(image)) encoder.Save(stream) int width = 128; int height = 128; int stride = width; byte[] pixels = new byte[height * stride]; // Define the image palette BitmapPalette myPalette = BitmapPalettes.Halftone256; // Creates a new empty image with the pre-defined palette BitmapSource image = BitmapSource.Create( width, height, 96, 96, PixelFormats.Indexed8, myPalette, pixels, stride); FileStream stream = new FileStream("new.png", FileMode.Create); PngBitmapEncoder encoder = new PngBitmapEncoder(); TextBlock myTextBlock = new TextBlock(); myTextBlock.Text = "Codec Author is: " + encoder.CodecInfo.Author.ToString(); encoder.Interlace = PngInterlaceOption.On; encoder.Frames.Add(BitmapFrame.Create(image)); encoder.Save(stream); int width = 128; int height = 128; int stride = width; array<System::Byte>^ pixels = gcnew array<System::Byte>(height * stride); // Define the image palette BitmapPalette^ myPalette = BitmapPalettes::Halftone256; // Creates a new empty image with the pre-defined palette BitmapSource^ image = BitmapSource::Create(width, height, 96, 96, PixelFormats::Indexed8, myPalette, pixels, stride); FileStream^ stream = gcnew FileStream("new.png", FileMode::Create); PngBitmapEncoder^ encoder = gcnew PngBitmapEncoder(); TextBlock^ myTextBlock = gcnew TextBlock(); myTextBlock->Text = "Codec Author is: " + encoder->CodecInfo->Author->ToString(); encoder->Interlace = PngInterlaceOption::On; encoder->Frames->Add(BitmapFrame::Create(image)); encoder->Save(stream);

⑸ 怎样将很多图片自动重命名,编码

图片批量重命名并编号：

步骤1，下载安装软件后打开，然后点击【添加文件】按钮，将需要重命名的图片文件添加到软件中，也可以直接将图片拖到软件中。

⑹ 如何在Android用FFmpeg解码图像

fetch code

用git把ffmpeg(我用的github上FFmpeg-Android)和x264(vlc的官方git)分别都clone下来。

build x264

在x264目录里面写一个myconfig.sh(其实直接把这些命令打在终端也行，问题是有的时候需要改来改去，不如写个文件改起来方便)

export NDK=/opt/android-ndk

export PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.6/prebuilt

export PLATFORM=$NDK/platforms/android-14/arch-arm

export PREFIX=/home/mingkai/softwares/x264

./configure \

--enable-pic \

--enable-static \

--enable-shared \

--disable-asm \

--disable-cli \

--host=arm-linux \

--cross-prefix="/opt/android-ndk/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi-"
\

--sysroot=$PLATFORM \

--prefix=$PREFIX

其中prefix貌似直接用"arm-linux-androideabi-“也可以。

然后可以make和make install了。(记得改PREFIX等环境变量)

build FFmpeg

这个是从github上FFmpeg-Android里面的FFmpeg-Android.sh里面改了改一些参数。

最主要的是FFMPEG_FLAGS，里面都是一些关于FFmpeg的参数设定，尤其是是否启用encoder/decoder之类的。

还有一点就是再下面EXTRA_CFLAGS里面加上

“-I/path/to/x264/include”

EXTRA_LDFLAGS里面加上

“-L/path/to/x264/lib -lx264”。

⑺ 别人发来的图片有马赛克 可以解码吗

解决方法 1、首先利用PS打开要处理的含有马赛克的图片。 2、双击背景层，将其转换为普通图层“图层0”。 3、接下来，点击“选区工具”，然后选择要消除马赛克的区域，执行“滤镜”→“锐化”→“智能锐化”。 4、适当的增加“数量”和“半径”，使马赛克部分对比度增强，同时看起来显得更容易区分。 5、点击“选择”→“取消选择”项来取消选区，然后选择“仿制图章工具”。 6、按住“Alt”键不放，点击要采样的区域，然后不断涂抹要应用的位置，从而不断取消马赛克部分的图像。 7、通过不断选择周围的部分来使相邻部分的图像尽量保持一致。

⑻ 图片怎么解码

用这个工具
RPGViewer图片资源提取工具
(这是轩辕春秋论坛网友自制的图片提取工具,操作非常简单,可以提取非常多游戏的图片.你用用就知道)
下载

⑼ 如何在Android用FFmpeg解码图像

创建一个VideoPicture结构体用来保存解码出来的图像。

LOCAL_PATH := $(call my-dir)
###########################
#
# SDL shared library
#
###########################
include $(CLEAR_VARS)
LOCAL_MODULE := SDL2
LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_C_INCLUDES)
LOCAL_SRC_FILES := \
$(subst $(LOCAL_PATH)/,, \
$(wildcard $(LOCAL_PATH)/src/*.c) \
$(wildcard $(LOCAL_PATH)/src/audio/*.c) \
$(wildcard $(LOCAL_PATH)/src/audio/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/audio/mmy/*.c) \
$(LOCAL_PATH)/src/atomic/SDL_atomic.c \
$(LOCAL_PATH)/src/atomic/SDL_spinlock.c.arm \
$(wildcard $(LOCAL_PATH)/src/core/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/cpuinfo/*.c) \
$(wildcard $(LOCAL_PATH)/src/dynapi/*.c) \
$(wildcard $(LOCAL_PATH)/src/events/*.c) \
$(wildcard $(LOCAL_PATH)/src/file/*.c) \
$(wildcard $(LOCAL_PATH)/src/haptic/*.c) \
$(wildcard $(LOCAL_PATH)/src/haptic/mmy/*.c) \
$(wildcard $(LOCAL_PATH)/src/joystick/*.c) \
$(wildcard $(LOCAL_PATH)/src/joystick/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/loadso/dlopen/*.c) \
$(wildcard $(LOCAL_PATH)/src/power/*.c) \
$(wildcard $(LOCAL_PATH)/src/power/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/filesystem/mmy/*.c) \
$(wildcard $(LOCAL_PATH)/src/render/*.c) \
$(wildcard $(LOCAL_PATH)/src/render/*/*.c) \
$(wildcard $(LOCAL_PATH)/src/stdlib/*.c) \
$(wildcard $(LOCAL_PATH)/src/thread/*.c) \
$(wildcard $(LOCAL_PATH)/src/thread/pthread/*.c) \
$(wildcard $(LOCAL_PATH)/src/timer/*.c) \
$(wildcard $(LOCAL_PATH)/src/timer/unix/*.c) \
$(wildcard $(LOCAL_PATH)/src/video/*.c) \
$(wildcard $(LOCAL_PATH)/src/video/android/*.c) \
$(wildcard $(LOCAL_PATH)/src/test/*.c))
LOCAL_CFLAGS += -DGL_GLEXT_PROTOTYPES
LOCAL_LDLIBS := -ldl -lGLESv1_CM -lGLESv2 -llog -landroid
include $(BUILD_SHARED_LIBRARY)
###########################
#
# SDL static library
#
###########################
#LOCAL_MODULE := SDL2_static
#LOCAL_MODULE_FILENAME := libSDL2
#LOCAL_SRC_FILES += $(LOCAL_PATH)/src/main/android/SDL_android_main.c
#LOCAL_LDLIBS :=
#LOCAL_EXPORT_LDLIBS := -Wl,--undefined=Java_org_libsdl_app_SDLActivity_nativeInit -ldl -lGLESv1_CM -lGLESv2 -llog -landroid
#include $(BUILD_STATIC_LIBRARY)

二、参考[原]如何在Android用FFmpeg解码图像， 在工程中新建一个ffmpeg文件夹，将与ffmpeg相关的头文件include进来。ffmpeg文件夹下的Android.mk内容：

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := ffmpeg
LOCAL_SRC_FILES := /path/to/build/ffmpeg/libffmpeg.so
include $(PREBUILT_SHARED_LIBRARY)

三、新建player文件夹，用来编写解码与显示文件。player.c文件内容：

/*
* SDL_Lesson.c
*
* Created on: Aug 12, 2014
* Author: clarck
*/
#include <jni.h>
#include <android/native_window_jni.h>
#include "SDL.h"
#include "SDL_thread.h"
#include "SDL_events.h"
#include "../include/logger.h"
#include "../ffmpeg/include/libavcodec/avcodec.h"
#include "../ffmpeg/include/libavformat/avformat.h"
#include "../ffmpeg/include/libavutil/pixfmt.h"
#include "../ffmpeg/include/libswscale/swscale.h"
int main(int argc, char *argv[]) {
char *file_path = argv[1];
LOGI("file_path:%s", file_path);
AVFormatContext *pFormatCtx;
AVCodecContext *pCodecCtx;
AVCodec *pCodec;
AVFrame *pFrame, *pFrameYUV;
AVPacket *packet;
uint8_t *out_buffer;
SDL_Texture *bmp = NULL;
SDL_Window *screen = NULL;
SDL_Rect rect;
SDL_Event event;
static struct SwsContext *img_convert_ctx;
int videoStream, i, numBytes;
int ret, got_picture;
av_register_all();
pFormatCtx = avformat_alloc_context();
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER)) {
LOGE("Could not initialize SDL - %s. \n", SDL_GetError());
exit(1);
}
if (avformat_open_input(&pFormatCtx, file_path, NULL, NULL) != 0) {
LOGE("can't open the file. \n");
return -1;
}
if (avformat_find_stream_info(pFormatCtx, NULL) < 0) {
LOGE("Could't find stream infomation.\n");
return -1;
}
videoStream = 1;
for (i = 0; i < pFormatCtx->nb_streams; i++) {
if (pFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
videoStream = i;
}
}
LOGI("videoStream:%d", videoStream);
if (videoStream == -1) {
LOGE("Didn't find a video stream.\n");
return -1;
}
pCodecCtx = pFormatCtx->streams[videoStream]->codec;
pCodec = avcodec_find_decoder(pCodecCtx->codec_id);
if (pCodec == NULL) {
LOGE("Codec not found.\n");
return -1;
}
if (avcodec_open2(pCodecCtx, pCodec, NULL) < 0) {
LOGE("Could not open codec.\n");
return -1;
}
pFrame = av_frame_alloc();
pFrameYUV = av_frame_alloc();
//---------------------------init sdl---------------------------//
screen = SDL_CreateWindow("My Player Window", SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED, pCodecCtx->width, pCodecCtx->height,
SDL_WINDOW_FULLSCREEN | SDL_WINDOW_OPENGL);
SDL_Renderer *renderer = SDL_CreateRenderer(screen, -1, 0);
bmp = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_YV12,
SDL_TEXTUREACCESS_STREAMING, pCodecCtx->width, pCodecCtx->height);
//-------------------------------------------------------------//

img_convert_ctx = sws_getContext(pCodecCtx->width, pCodecCtx->height,
pCodecCtx->pix_fmt, pCodecCtx->width, pCodecCtx->height,
AV_PIX_FMT_YUV420P, SWS_BICUBIC, NULL, NULL, NULL);
numBytes = avpicture_get_size(AV_PIX_FMT_YUV420P, pCodecCtx->width,
pCodecCtx->height);
out_buffer = (uint8_t *) av_malloc(numBytes * sizeof(uint8_t));
avpicture_fill((AVPicture *) pFrameYUV, out_buffer, AV_PIX_FMT_YUV420P,
pCodecCtx->width, pCodecCtx->height);
rect.x = 0;
rect.y = 0;
rect.w = pCodecCtx->width;
rect.h = pCodecCtx->height;
int y_size = pCodecCtx->width * pCodecCtx->height;
packet = (AVPacket *) malloc(sizeof(AVPacket));
av_new_packet(packet, y_size);
av_mp_format(pFormatCtx, 0, file_path, 0);
while (av_read_frame(pFormatCtx, packet) >= 0) {
if (packet->stream_index == videoStream) {
ret = avcodec_decode_video2(pCodecCtx, pFrame, &got_picture,
packet);
if (ret < 0) {
LOGE("decode error.\n");
return -1;
}
LOGI("got_picture:%d", got_picture);
if (got_picture) {
sws_scale(img_convert_ctx,
(uint8_t const * const *) pFrame->data,
pFrame->linesize, 0, pCodecCtx->height, pFrameYUV->data,
pFrameYUV->linesize);
////iPitch 计算yuv一行数据占的字节数
SDL_UpdateTexture(bmp, &rect, pFrameYUV->data[0], pFrameYUV->linesize[0]);
SDL_RenderClear(renderer);
SDL_RenderCopy(renderer, bmp, &rect, &rect);
SDL_RenderPresent(renderer);
}
SDL_Delay(50);
}
av_free_packet(packet);
SDL_PollEvent(&event);
switch (event.type) {
case SDL_QUIT:
SDL_Quit();
exit(0);
break;
default:
break;
}